Release v0.4.0: add screen capture and annotation editor

2026-10-28 22:15:59 +02:00
parent e5ff9495e4
commit dc615d0223
89 changed files with 2745 additions and 48 deletions
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.24)
-project(KSwitcher VERSION 0.3.0 LANGUAGES CXX RC)
+project(KSwitcher VERSION 0.4.0 LANGUAGES CXX RC)
 if(NOT WIN32)
  message(FATAL_ERROR "KSwitcher uses native Windows APIs")
 endif()
@@ -9,7 +9,7 @@ add_library(kscore src/core.cpp src/platform.cpp src/autostart.cpp src/autocorre
 target_include_directories(kscore PUBLIC src PRIVATE vendor)
 target_compile_definitions(kscore PUBLIC UNICODE _UNICODE WIN32_LEAN_AND_MEAN NOMINMAX _WIN32_WINNT=0x0A00)
 target_link_libraries(kscore PUBLIC user32 shell32 advapi32 crypt32 imm32 comctl32 gdi32 ole32 oleaut32 taskschd comdlg32 uuid windowscodecs runtimeobject uiautomationcore)
-add_executable(KSwitcher WIN32 src/main.cpp src/app.cpp src/configuration.cpp src/ui.cpp resources/app.rc)
+add_executable(KSwitcher WIN32 src/main.cpp src/app.cpp src/screenshot.cpp src/configuration.cpp src/ui.cpp resources/app.rc)
 target_compile_definitions(KSwitcher PRIVATE KS_RESIDENT_APP)
 target_link_libraries(KSwitcher PRIVATE kscore)
 add_executable(KSwitcherConfig WIN32 src/config_main.cpp src/configuration.cpp src/ui.cpp resources/app.rc)
@@ -18,10 +18,18 @@ target_compile_definitions(KSwitcherConfig PRIVATE KS_CONFIG_APP)
 target_link_libraries(KSwitcherConfig PRIVATE kscore)
 add_executable(KSwitcherTests tests/tests.cpp)
 target_link_libraries(KSwitcherTests PRIVATE kscore)
-add_executable(KSwitcherIntegration tests/integration.cpp src/app.cpp src/configuration.cpp src/ui.cpp resources/app.rc)
+add_executable(KSwitcherIntegration tests/integration.cpp src/app.cpp src/screenshot.cpp src/configuration.cpp src/ui.cpp resources/app.rc)
 target_link_libraries(KSwitcherIntegration PRIVATE kscore)
-add_executable(KSwitcherInputTests tests/input.cpp src/app.cpp src/configuration.cpp src/ui.cpp resources/app.rc)
+add_executable(KSwitcherInputTests tests/input.cpp src/app.cpp src/screenshot.cpp src/configuration.cpp src/ui.cpp resources/app.rc)
 target_link_libraries(KSwitcherInputTests PRIVATE kscore)
 add_executable(KSwitcherScreenshotUITests tests/screenshot_ui.cpp src/app.cpp src/configuration.cpp src/ui.cpp resources/app.rc)
 target_link_libraries(KSwitcherScreenshotUITests PRIVATE kscore)
 if(MSVC)
  target_compile_options(KSwitcherScreenshotUITests PRIVATE /utf-8)
  set_property(TARGET KSwitcherScreenshotUITests PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
 else()
  target_link_options(KSwitcherScreenshotUITests PRIVATE -static -static-libgcc -static-libstdc++)
 endif()
 add_executable(KSwitcherOcrTests tests/ocr.cpp)
 target_link_libraries(KSwitcherOcrTests PRIVATE kscore)
 if(MSVC)
@@ -40,6 +48,7 @@ endif()
 enable_testing()
 add_test(NAME native-regressions COMMAND KSwitcherTests)
 add_test(NAME input-regressions COMMAND KSwitcherInputTests)
 add_test(NAME screenshot-ui-regressions COMMAND KSwitcherScreenshotUITests)
 add_test(NAME updater-regressions COMMAND powershell.exe -NoProfile -ExecutionPolicy Bypass -File "${CMAKE_CURRENT_SOURCE_DIR}/tests/update.ps1" -Executable "$<TARGET_FILE:KSwitcher>")
 set_tests_properties(native-regressions PROPERTIES WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}")
 install(TARGETS KSwitcher KSwitcherConfig RUNTIME DESTINATION .)
@@ -19,3 +19,50 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 Third-party toolbar icons: Lucide (https://lucide.dev)
 ISC License
 Copyright (c) 2026 Lucide Icons and Contributors
 Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted, provided that the above
 copyright notice and this permission notice appear in all copies.
 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 ---
 The following Lucide icons are derived from the Feather project:
 airplay, alert-circle, alert-octagon, alert-triangle, aperture, arrow-down-circle, arrow-down-left, arrow-down-right, arrow-down, arrow-left-circle, arrow-left, arrow-right-circle, arrow-right, arrow-up-circle, arrow-up-left, arrow-up-right, arrow-up, at-sign, calendar, cast, check, chevron-down, chevron-left, chevron-right, chevron-up, chevrons-down, chevrons-left, chevrons-right, chevrons-up, circle, clipboard, clock, code, columns, command, compass, corner-down-left, corner-down-right, corner-left-down, corner-left-up, corner-right-down, corner-right-up, corner-up-left, corner-up-right, crosshair, database, divide-circle, divide-square, dollar-sign, download, external-link, feather, frown, hash, headphones, help-circle, info, italic, key, layout, life-buoy, link-2, link, loader, lock, log-in, log-out, maximize, meh, minimize, minimize-2, minus-circle, minus-square, minus, monitor, moon, more-horizontal, more-vertical, move, music, navigation-2, navigation, octagon, pause-circle, percent, plus-circle, plus-square, plus, power, radio, rss, search, server, share, shopping-bag, sidebar, smartphone, smile, square, table-2, tablet, target, terminal, trash-2, trash, triangle, tv, type, upload, x-circle, x-octagon, x-square, x, zoom-in, zoom-out
 The MIT License (MIT) (for the icons listed above)
 Copyright (c) 2013-present Cole Bemis
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
@@ -53,6 +53,78 @@ keys cannot trigger recursive commands or overwrite the recorded typing run. Oth
 is accepted, including key-up events and VK-only keyboard events. Unicode packets do not provide
 physical key positions and therefore reset recent-word tracking; selection conversion still works.
 ### Screen capture and annotations
 Press **Win+Shift+S**, choose **Capture screen region…** in the tray menu, or run
 `KSwitcher.exe --capture`. Drag a rectangle on the dimmed, frozen desktop; the selected area stays
 at normal brightness. Escape cancels. Selection and annotation frames are buffered to avoid flicker.
 The editor opens with the selected area. Press **Ctrl+C** or **Enter** to copy it immediately,
 or annotate first: **N** places sequential numbered red markers with a click, and **A** draws
 red arrows by dragging from the tail to the tip. Click an existing marker or arrow to select it;
 drag its body to move it. Drag the square handle on a number's right edge to change its diameter
 (the text scales with it), or either endpoint handle of an arrow to change its length and direction.
 Select an arrow and drag the extra handle beside its midpoint perpendicular to the line to change
 its thickness from 1 to 30 pixels. The arrowhead scales with the line. Minus/plus keys also work.
 Alternatively, scroll the mouse wheel over an arrow to change its thickness, or over a number to
 change its diameter. Wheel up increases the size; wheel down decreases it. These edits support Undo
 and update linked arrows. **Ctrl+D** clones the selected object with a small offset. A cloned number
 gets the smallest available positive number, just like a newly placed number: gaps left by deletion
 are filled first, without renumbering existing objects. A cloned arrow keeps its style but starts without endpoint links.
 The compact toolbar uses [Lucide](https://lucide.dev) icons with hover tooltips showing each action
 and its keyboard shortcut.
 Drop either arrow endpoint onto a number to link it to the circle's edge. Linked endpoints follow
 the number when it moves or changes diameter. Drag an endpoint away to unlink it; moving the whole
 arrow unlinks both ends. In Arrow mode, hold **Ctrl** while dragging to start a new arrow directly
 from a number. Deleting a number leaves its arrows in place and removes their links; Undo restores them.
 **Delete** removes the selected object. **Ctrl+Z** (Undo) reverses additions, moves, resizes and deletions
 (up to 100 actions). **Ctrl+Y** or **Ctrl+Shift+Z** (Redo) restores undone edits; a new edit clears the
 redo history. Undo and Redo buttons are disabled when unavailable. Enabled toolbar buttons use a
 hand cursor. Selection handles are visible only in the editor, never in the copied image.
 The **palette** changes the selected object's color: arrow, numbered marker, or highlight.
 It also sets the color for newly drawn objects of every type. With nothing selected, only the
 color for new objects changes. Number text switches between dark and white for readability.
 **Highlight (H)** paints a translucent freehand marker stroke. Dark text remains readable beneath
 the highlight. Drag a selected stroke
 to move it, scroll over it to change width (4–100 pixels), or use Delete / Ctrl+D / Undo / Redo.
 Hold Ctrl while drawing to paint a new stroke over an existing object. Highlights render beneath
 arrows and numbered markers. The palette's color indicator reflects the selected object, or the
 color for new objects when nothing is selected.
 The editor status bar shows contextual tool, selection, rotation and text-editing hints.
 Hover a toolbar button to see its action and shortcut; the title stays **KSwitcher — Screenshot**.
 **Text (T)** adds text directly on the image. Enter inserts a line break; Ctrl+Enter or a click
 outside commits the edit, and Escape cancels it. Double-click text or press F2 to edit it again.
 The **Aa** icon opens the standard font dialog for family, size (6–200 pt), bold and italic.
 The mouse wheel over text adjusts its font size. Text supports color, dragging, Ctrl+D,
 Delete and Undo/Redo. Arrow keys move the selected object by one source-image pixel;
 selecting an arrow caption moves only that caption. Repositioning a caption preserves its
 automatic angle; only dragging the rotation handle switches to a fixed angle.
 Text has a rotation handle above its selection. Drag to rotate; hold Shift to snap to 15-degree steps.
 Double-click an arrow, press F2, or use the label icon to add/edit its caption. Captions follow
 the arrow when moved or resized; drag the caption to adjust its offset. By default, the caption
 angle follows the line (or middle curve segment) and stays upright. Rotating its handle manually
 fixes its angle; Shift snaps to 15-degree steps. Undo restores automatic mode. The Aa icon changes
 the selected caption font, and the mouse wheel over it changes its size. Captions and rotation
 are included in clipboard export, cloning and Undo/Redo.
 **Straight line (L)** creates a line without arrowheads. **Rectangle (R)**, **Circle (O)** and
 **Ellipse (E)** create transparent shapes with colored outlines. Drag the two corner handles to
 resize; circles keep equal width and height. Move shapes by their outlines, adjust thickness with
 the mouse wheel or side handle, recolor, clone with Ctrl+D, and undo/redo as with other objects.
 Hold Ctrl to start drawing over an existing object. Line style applies to outlines; Ends is disabled
 for shapes.
 **Freehand line (F)** draws an opaque curve by following the mouse. The curve is one object:
 move it, change its color or thickness, clone it, or drag its endpoints. Hold Ctrl to start a new
 stroke over an existing object. The **Line style** selector supports Solid, Dotted, Dashed and
 Dash-dot; **Ends** supports an arrow at the end, start, both ends, or no arrows. These settings
 apply to selected straight/freehand lines and set defaults for subsequent lines. Both are disabled
 for numbered markers and highlights unless a line drawing tool is active. Undo/Redo includes style changes.
 The window close button asks for confirmation before discarding an uncopied screenshot.
 **Escape** cancels region selection or inline text edits; it does not close the editor. Copy closes the editor and publishes the image
 at its original pixel size, ready to paste. The preview fits the window without changing export size.
 The shortcut is configurable in Settings under **Screen capture**.
 Each capture opens an independent editor; use the shortcut again to take another screenshot while
 keeping earlier editors and their annotations open.
 Captures use ordinary clipboard history settings and limits. Protected video and secure desktops cannot be captured.
 ### Updates
 Select **Update** in the tray menu to check the stable Releases of
@@ -72,8 +144,9 @@ intact and is reported when Update is selected. Startup network failures remain
 The helper uses Windows' built-in Windows PowerShell 5.1; no additional runtime is installed.
 Settings and the other utility windows use the destination monitor's DPI for their initial frame,
-controls and fonts. They can be resized, stay within a remaining monitor's work area after display
+controls and fonts. Settings has a fixed form size, without manual resizing or maximization; other
-changes, and provide scrollbars when their content does not fit. Tab navigation scrolls the focused
+utility windows remain resizable. Windows stay within a remaining monitor's work area after display
 changes and provide scrollbars when their content does not fit. Tab navigation scrolls the focused
 field into view; Shift+wheel scrolls horizontally.
 ## Implemented
@@ -1,32 +1,31 @@
 # Latest Windows release
-## v0.3.0 — 2026-10-28
+## v0.4.0 — 2026-10-28
- Move Settings and the snippet editor into the on-demand `KSwitcher.Config.exe` process.
+- Capture a rectangular screen region with Win+Shift+S (configurable), with dimmed selection and independent editor windows.
- Repeated launches activate the existing configurator. Closing its last window releases the process and its memory.
+- Annotate screenshots with numbered markers, arrows, straight/freehand lines, highlights, rectangles, circles, ellipses and inline text.
- Apply settings immediately through validated IPC with the resident process; reject conflicting saves instead of overwriting newer settings.
+- Edit color, line style, arrowheads, thickness, font and size. Link arrow endpoints to markers and attach captions.
- Keep shortcut capture in the resident hook, with no extra global hooks in the configurator.
+- Captions follow line angle and keep their relative offset until manually rotated. Text rotation supports Shift snapping in 15-degree steps.
- Support packaging, validation and rollback of both executables. About now displays the actual application version.
+- Move objects one pixel with arrow keys; clone with Ctrl+D; undo/redo edits. Numbered markers reuse gaps.
 - Compact Lucide toolbar, contextual status bar, pencil cursor and confirmation before discarding an uncopied screenshot. Escape no longer closes the editor.
 - Preserve the separate on-demand configurator and configurable capture shortcut.
-Verified: 170 native checks, 51 input/layout checks, 28 updater/metadata checks and 21 configurator process checks.
+Verified: 173 native checks, 373 input/rendering checks, screenshot editor UI integration checks,
-A local before/after measurement after opening and closing Settings reduced resident working set from about 21.0 MiB to 14.7 MiB. Results vary; total memory is higher while the separate configurator is open.
+28 updater checks and package validation using the unchanged v0.3.0 updater.
-**Upgrade from v0.2.3 or earlier: install this release manually once.** The old updater rejects the additional EXE.
+**Upgrade from v0.3.0:** use Update in the tray menu. Both executables are supported by that updater.
-Exit KSwitcher, extract the entire ZIP into the installation folder, and retain `data/` and any customized dictionaries.
+**Upgrade from v0.2.3 or earlier:** install manually once because those updaters reject the additional configurator EXE.
-Keep `KSwitcher.exe`, `KSwitcher.Config.exe` and `dictionaries/` together. Launch `KSwitcher.exe`.
+Exit KSwitcher and extract the entire ZIP into its installation folder. Keep personal `data/` and customized dictionaries.
 Subsequent updates support both executables through the tray Update menu.
-Download **KSwitcher-win-x64.zip**. The archive contains both applications, offline dictionaries,
+Download **KSwitcher-win-x64.zip** with **SHA256SUMS.txt**. The package contains both executables,
-documentation and license notices. It does not contain personal settings or clipboard history.
+offline dictionaries, documentation and license notices; no personal settings or clipboard history.
 `SHA256SUMS.txt` contains the archive checksum.
-This folder holds the latest compiled version; older versions remain in Git history and Releases.
+Build and package:
 To refresh the tracked package from source:
 ```powershell
 .\build.ps1 -Stage -Test
 .\package.ps1 -PublishRelease
 ```
-Commit the ZIP and checksum together with their source changes. Publish both files as assets of
+Commit the archive, checksum and sources together. Publish both assets on a stable release whose
-one stable release tagged with the executable version, so the updater can verify it.
+tag matches the executable version.
@@ -1 +1 @@
-104c79b64bb30a2161e3ec2f5108a731da0d274e015d53d8835ea7e64f431ee1  KSwitcher-win-x64.zip
+c2ad230f9946fddcf6faf17378814cba474c104fa155f63cd1a9ac61fc489ee7  KSwitcher-win-x64.zip
@@ -14,7 +14,7 @@ Push-Location $root
 try {
    $common = @('-std=c++20','-Os','-DNDEBUG','-DUNICODE','-D_UNICODE','-DWIN32_LEAN_AND_MEAN','-DNOMINMAX','-D_WIN32_WINNT=0x0A00','-Wall','-Wextra','-Wno-missing-field-initializers','-Isrc','-Ivendor','-ffunction-sections','-fdata-sections')
    $libs = @('-luser32','-lshell32','-ladvapi32','-lcrypt32','-limm32','-lcomctl32','-lgdi32','-lole32','-loleaut32','-ltaskschd','-lcomdlg32','-luuid','-lwindowscodecs','-lruntimeobject','-luiautomationcore')
-    foreach ($name in @('core','platform','autostart','autocorrect','storage','ocr','richtext','update','app','ui','main','configuration','config_main')) {
+    foreach ($name in @('core','platform','autostart','autocorrect','storage','ocr','richtext','update','screenshot','app','ui','main','configuration','config_main')) {
        & $compiler @common -c "src/$name.cpp" -o "build/$name.o"
        if ($LASTEXITCODE) { throw "Compilation failed: $name" }
    }
@@ -25,7 +25,7 @@ try {
    & windres --codepage=65001 resources/app.rc -O coff -o build/app-res.o
    if ($LASTEXITCODE) { throw 'Resource compilation failed' }
    New-Item -ItemType Directory -Force build/release | Out-Null
-    & $compiler -mwindows -municode -static -s '-Wl,--gc-sections' build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/ocr.o build/richtext.o build/update.o build/app.o build/configuration.o build/ui-resident.o build/main.o build/app-res.o @libs -o $executablePath
+    & $compiler -mwindows -municode -static -s '-Wl,--gc-sections' build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/ocr.o build/richtext.o build/update.o build/screenshot.o build/app.o build/configuration.o build/ui-resident.o build/main.o build/app-res.o @libs -o $executablePath
    if ($LASTEXITCODE) { throw 'Link failed' }
    Copy-Item -LiteralPath $executablePath -Destination build/release/KSwitcher.exe -Force
    $configPath = Join-Path (Split-Path $executablePath) 'KSwitcher.Config.exe'
@@ -37,15 +37,19 @@ try {
        if ($LASTEXITCODE) { throw 'Test build failed' }
        & .\build\KSwitcherTests.exe
        if ($LASTEXITCODE) { throw 'Tests failed' }
-        & $compiler @common tests/input.cpp build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/ocr.o build/richtext.o build/update.o build/app.o build/configuration.o build/ui.o build/app-res.o @libs -static -s -o build/KSwitcherInputTests.exe
+        & $compiler @common tests/input.cpp build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/ocr.o build/richtext.o build/update.o build/screenshot.o build/app.o build/configuration.o build/ui.o build/app-res.o @libs -static -s -o build/KSwitcherInputTests.exe
        if ($LASTEXITCODE) { throw 'Input test build failed' }
        & .\build\KSwitcherInputTests.exe
        if ($LASTEXITCODE) { throw 'Input tests failed' }
        & $compiler @common tests/screenshot_ui.cpp build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/ocr.o build/richtext.o build/update.o build/app.o build/configuration.o build/ui.o build/app-res.o @libs -static -s -o build/KSwitcherScreenshotUITests.exe
        if ($LASTEXITCODE) { throw 'Screenshot UI test build failed' }
        & .\build\KSwitcherScreenshotUITests.exe
        if ($LASTEXITCODE) { throw 'Screenshot UI tests failed' }
        & "$env:SystemRoot\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -File tests/update.ps1 -Executable $executablePath
        if ($LASTEXITCODE) { throw 'Updater tests failed' }
    }
    if ($Integration) {
-        & $compiler @common tests/integration.cpp build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/ocr.o build/richtext.o build/update.o build/app.o build/configuration.o build/ui.o build/app-res.o @libs -static -s -o build/KSwitcherIntegration.exe
+        & $compiler @common tests/integration.cpp build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/ocr.o build/richtext.o build/update.o build/screenshot.o build/app.o build/configuration.o build/ui.o build/app-res.o @libs -static -s -o build/KSwitcherIntegration.exe
        if ($LASTEXITCODE) { throw 'Integration test build failed' }
        & .\build\KSwitcherIntegration.exe
        if ($LASTEXITCODE) { throw 'Integration tests failed' }
@@ -2,11 +2,12 @@
 #include <windows.h>
 #include "resource.h"
 IDI_KSWITCHER ICON "kswitcher.ico"
 IDC_SCREENSHOT_PENCIL CURSOR "icons/lucide/pencil.cur"
 1 RT_MANIFEST "app.manifest"
 201 RCDATA "update.ps1"
 1 VERSIONINFO
- FILEVERSION 0,3,0,0
+ FILEVERSION 0,4,0,0
- PRODUCTVERSION 0,3,0,0
+ PRODUCTVERSION 0,4,0,0
 FILEOS VOS_NT_WINDOWS32
 FILETYPE VFT_APP
 BEGIN
@@ -16,7 +17,7 @@ BEGIN
  BEGIN
   VALUE "FileDescription", "KSwitcher — native keyboard and clipboard utility"
   VALUE "ProductName", "KSwitcher"
-   VALUE "FileVersion", "0.3.0"
+   VALUE "FileVersion", "0.4.0"
  END
 END
 BLOCK "VarFileInfo"
@@ -24,3 +25,51 @@ BEGIN
  VALUE "Translation", 0x409, 1200
 END
 END
 300 ICON "icons/lucide/circle-dot-normal.ico"
 310 ICON "icons/lucide/circle-dot-active.ico"
 320 ICON "icons/lucide/circle-dot-disabled.ico"
 301 ICON "icons/lucide/arrow-up-right-normal.ico"
 311 ICON "icons/lucide/arrow-up-right-active.ico"
 321 ICON "icons/lucide/arrow-up-right-disabled.ico"
 302 ICON "icons/lucide/undo-2-normal.ico"
 312 ICON "icons/lucide/undo-2-active.ico"
 322 ICON "icons/lucide/undo-2-disabled.ico"
 303 ICON "icons/lucide/copy-normal.ico"
 313 ICON "icons/lucide/copy-active.ico"
 323 ICON "icons/lucide/copy-disabled.ico"
 304 ICON "icons/lucide/x-normal.ico"
 314 ICON "icons/lucide/x-active.ico"
 324 ICON "icons/lucide/x-disabled.ico"
 305 ICON "icons/lucide/redo-2-normal.ico"
 315 ICON "icons/lucide/redo-2-active.ico"
 325 ICON "icons/lucide/redo-2-disabled.ico"
 306 ICON "icons/lucide/highlighter-normal.ico"
 316 ICON "icons/lucide/highlighter-active.ico"
 326 ICON "icons/lucide/highlighter-disabled.ico"
 307 ICON "icons/lucide/palette-normal.ico"
 317 ICON "icons/lucide/palette-active.ico"
 327 ICON "icons/lucide/palette-disabled.ico"
 308 ICON "icons/lucide/pencil-normal.ico"
 318 ICON "icons/lucide/pencil-active.ico"
 328 ICON "icons/lucide/pencil-disabled.ico"
 400 ICON "icons/lucide/slash-normal.ico"
 410 ICON "icons/lucide/slash-active.ico"
 420 ICON "icons/lucide/slash-disabled.ico"
 401 ICON "icons/lucide/square-normal.ico"
 411 ICON "icons/lucide/square-active.ico"
 421 ICON "icons/lucide/square-disabled.ico"
 402 ICON "icons/lucide/circle-normal.ico"
 412 ICON "icons/lucide/circle-active.ico"
 422 ICON "icons/lucide/circle-disabled.ico"
 403 ICON "icons/lucide/ellipse-normal.ico"
 413 ICON "icons/lucide/ellipse-active.ico"
 423 ICON "icons/lucide/ellipse-disabled.ico"
 404 ICON "icons/lucide/type-normal.ico"
 414 ICON "icons/lucide/type-active.ico"
 424 ICON "icons/lucide/type-disabled.ico"
 405 ICON "icons/lucide/a-large-small-normal.ico"
 415 ICON "icons/lucide/a-large-small-active.ico"
 425 ICON "icons/lucide/a-large-small-disabled.ico"
@@ -0,0 +1,43 @@
 ISC License
 Copyright (c) 2026 Lucide Icons and Contributors
 Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted, provided that the above
 copyright notice and this permission notice appear in all copies.
 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 ---
 The following Lucide icons are derived from the Feather project:
 airplay, alert-circle, alert-octagon, alert-triangle, aperture, arrow-down-circle, arrow-down-left, arrow-down-right, arrow-down, arrow-left-circle, arrow-left, arrow-right-circle, arrow-right, arrow-up-circle, arrow-up-left, arrow-up-right, arrow-up, at-sign, calendar, cast, check, chevron-down, chevron-left, chevron-right, chevron-up, chevrons-down, chevrons-left, chevrons-right, chevrons-up, circle, clipboard, clock, code, columns, command, compass, corner-down-left, corner-down-right, corner-left-down, corner-left-up, corner-right-down, corner-right-up, corner-up-left, corner-up-right, crosshair, database, divide-circle, divide-square, dollar-sign, download, external-link, feather, frown, hash, headphones, help-circle, info, italic, key, layout, life-buoy, link-2, link, loader, lock, log-in, log-out, maximize, meh, minimize, minimize-2, minus-circle, minus-square, minus, monitor, moon, more-horizontal, more-vertical, move, music, navigation-2, navigation, octagon, pause-circle, percent, plus-circle, plus-square, plus, power, radio, rss, search, server, share, shopping-bag, sidebar, smartphone, smile, square, table-2, tablet, target, terminal, trash-2, trash, triangle, tv, type, upload, x-circle, x-octagon, x-square, x, zoom-in, zoom-out
 The MIT License (MIT) (for the icons listed above)
 Copyright (c) 2013-present Cole Bemis
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
@@ -0,0 +1,5 @@
 Lucide https://github.com/lucide-icons/lucide
 Commit: be09619c1c1124ad09c19fc3e87ee3b939409bbd
 SVG originals retained. ICO variants generated with tools/generate-toolbar-icons.py.
 Ellipse is adapted from the pinned Lucide circle SVG (r replaced with rx/ry).
@@ -0,0 +1,16 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="m15 16 2.536-7.328a1.02 1.02 1 0 1 1.928 0L22 16" />
  <path d="M15.697 14h5.606" />
  <path d="m2 16 4.039-9.69a.5.5 0 0 1 .923 0L11 16" />
  <path d="M3.304 13h6.392" />
 </svg>
@@ -0,0 +1,14 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="M7 7h10v10" />
  <path d="M7 17 17 7" />
 </svg>
@@ -0,0 +1,14 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <circle cx="12" cy="12" r="1" />
  <circle cx="12" cy="12" r="10" />
 </svg>
@@ -0,0 +1,13 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <circle cx="12" cy="12" r="10" />
 </svg>
@@ -0,0 +1,14 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <rect width="14" height="14" x="8" y="8" rx="2" ry="2" />
  <path d="M4 16c-1.1 0-2-.9-2-2V4c0-1.1.9-2 2-2h10c1.1 0 2 .9 2 2" />
 </svg>
@@ -0,0 +1,13 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <ellipse cx="12" cy="12" rx="10" ry="7" />
 </svg>
@@ -0,0 +1,14 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="m9 11-6 6v3h9l3-3" />
  <path d="m22 12-4.6 4.6a2 2 0 0 1-2.8 0l-5.2-5.2a2 2 0 0 1 0-2.8L14 4" />
 </svg>
@@ -0,0 +1,13 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="M5 12h14" />
 </svg>
@@ -0,0 +1,17 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="M12 22a1 1 0 0 1 0-20 10 9 0 0 1 10 9 5 5 0 0 1-5 5h-2.25a1.75 1.75 0 0 0-1.4 2.8l.3.4a1.75 1.75 0 0 1-1.4 2.8z" />
  <circle cx="13.5" cy="6.5" r=".5" fill="currentColor" />
  <circle cx="17.5" cy="10.5" r=".5" fill="currentColor" />
  <circle cx="6.5" cy="12.5" r=".5" fill="currentColor" />
  <circle cx="8.5" cy="7.5" r=".5" fill="currentColor" />
 </svg>
@@ -0,0 +1,14 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="M21.174 6.812a1 1 0 0 0-3.986-3.987L3.842 16.174a2 2 0 0 0-.5.83l-1.321 4.352a.5.5 0 0 0 .623.622l4.353-1.32a2 2 0 0 0 .83-.497z" />
  <path d="m15 5 4 4" />
 </svg>
@@ -0,0 +1,14 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="M5 12h14" />
  <path d="M12 5v14" />
 </svg>
@@ -0,0 +1,14 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="m15 14 5-5-5-5" />
  <path d="M20 9H9.5A5.5 5.5 0 0 0 4 14.5A5.5 5.5 0 0 0 9.5 20H13" />
 </svg>
@@ -0,0 +1,13 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="M22 2 2 22" />
 </svg>
@@ -0,0 +1,13 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <rect width="18" height="18" x="3" y="3" rx="2" />
 </svg>
@@ -0,0 +1,15 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="M12 4v16" />
  <path d="M4 7V5a1 1 0 0 1 1-1h14a1 1 0 0 1 1 1v2" />
  <path d="M9 20h6" />
 </svg>
@@ -0,0 +1,14 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="M9 14 4 9l5-5" />
  <path d="M4 9h10.5a5.5 5.5 0 0 1 5.5 5.5a5.5 5.5 0 0 1-5.5 5.5H11" />
 </svg>
@@ -0,0 +1,14 @@
 <svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
 >
  <path d="M18 6 6 18" />
  <path d="m6 6 12 12" />
 </svg>
@@ -1,2 +1,3 @@
 #pragma once
 #define IDI_KSWITCHER 101
 #define IDC_SCREENSHOT_PENCIL 500
@@ -17,7 +17,8 @@ std::vector<std::pair<int, std::wstring>> shortcuts(const Settings &s)
                                                  {Case, s.casing},
                                                  {Translit, s.translit},
                                                  {Undo, s.undo},
-                                                  {ShowHistory, s.clipboard}};
+                                                  {ShowHistory, s.clipboard},
                                                  {Screenshot, s.screenshot}};
    for (size_t i = 0; i < s.direct.size(); ++i)
        out.emplace_back(Direct + (int)i, s.direct[i]);
    return out;
@@ -586,6 +587,11 @@ void App::dispatch(int command)
        return;
    try
    {
        if (command == Screenshot)
        {
            if (!busy) showScreenshot(*this);
            return;
        }
        if (command == ShowHistory)
        {
            showHistory(*this);
@@ -1096,6 +1102,7 @@ void App::trayMenu()
 {
    HMENU menu = CreatePopupMenu();
    AppendMenuW(menu, MF_STRING, 10, L"Clipboard history");
    AppendMenuW(menu, MF_STRING, 24, L"Capture screen region…");
    AppendMenuW(menu, MF_STRING, 11, L"Settings…");
    SetMenuDefaultItem(menu, 11, FALSE);
    AppendMenuW(menu, MF_STRING, 12, L"Snippets…");
@@ -1127,6 +1134,9 @@ void App::trayMenu()
    {
        switch (cmd)
        {
        case 24:
            dispatch(Screenshot);
            break;
        case 10:
            showHistory(*this);
            break;
@@ -14,7 +14,7 @@ namespace ks
 inline constexpr UINT TrayMessage = WM_APP + 1, ErrorMessage = WM_APP + 2, HistoryMessage = WM_APP + 3,
                      SnippetMessage = WM_APP + 4;
 inline constexpr int Toggle = 1, Case = 2, Translit = 3, Undo = 4, ShowHistory = 5, AutoCorrect = 6,
-                     Direct = 100;
+                     Screenshot = 7, Direct = 100;
 inline constexpr UINT AutoCorrectMessage = WM_APP + 6;
 inline constexpr UINT CaptureHotkeyMessage = WM_APP + 5;
 struct LastTransform
@@ -100,6 +100,7 @@ class App
    static LRESULT CALLBACK mouseProc(int, WPARAM, LPARAM);
 };
 void showHistory(App &);
 void showScreenshot(App &);
 void refreshHistory(App &);
 void showSettings(App &, bool visible = true);
 void showLogs(App &);
@@ -59,7 +59,8 @@ struct Settings
        L"Far",  L"ConEmu64", L"putty",  L"KeePass",         L"KeePassXC", L"1Password",  L"Bitwarden"};
    int maxItems = 500, maxMiB = 200, maxImageMiB = 20;
    std::wstring toggle = L"Ctrl+Alt+Shift+Space", casing = L"Ctrl+Alt+Shift+C",
-                 translit = L"Ctrl+Alt+Shift+T", undo = L"Ctrl+Alt+Shift+Z", clipboard = L"Ctrl+Shift+V";
+                 translit = L"Ctrl+Alt+Shift+T", undo = L"Ctrl+Alt+Shift+Z", clipboard = L"Ctrl+Shift+V",
                 screenshot = L"Win+Shift+S";
    std::vector<std::wstring> cycle, direct, directIds;
    std::vector<std::wstring> excluded{L"KeePass", L"KeePassXC", L"1Password", L"Bitwarden"};
    std::vector<Snippet> snippets;
@@ -31,7 +31,9 @@ int WINAPI wWinMain(HINSTANCE instance, HINSTANCE, PWSTR, int)
    HANDLE mutex = CreateMutexW(nullptr, TRUE, L"Local\\KSwitcher.Native.Singleton");
    bool existing = GetLastError() == ERROR_ALREADY_EXISTS;
    int cmd = ks::ShowHistory;
-    if (arg == L"--convert")
+    if (arg == L"--capture")
        cmd = ks::Screenshot;
    else if (arg == L"--convert")
        cmd = ks::Toggle;
    else if (arg == L"--case")
        cmd = ks::Case;
@@ -0,0 +1,54 @@
 #pragma once
 #include "platform.h"
 namespace ks
 {
 enum class LineStyle { Solid, Dotted, Dashed, DashDot };
 enum class LineEnds { End, Start, Both, None };
 enum class ScreenshotShape { None, Rectangle, Circle, Ellipse };
 struct ScreenshotOffset { double x, y; };
 struct ScreenshotMark {
    POINT from, to; int number; int radius = 15; int thickness = 3;
    int fromNumber = 0, toNumber = 0;
    std::vector<POINT> points;
    COLORREF color = RGB(225,42,50);
    bool freehand = false;
    LineStyle style = LineStyle::Solid;
    LineEnds ends = LineEnds::End;
    ScreenshotShape shape = ScreenshotShape::None;
    std::wstring text, fontName=L"Segoe UI";
    int fontSize=24, fontWeight=FW_NORMAL;
    bool fontItalic=false;
    double rotation=0;
    std::wstring label;
    ScreenshotOffset labelOffset{0,-24}; // Along the line and perpendicular to it, in image pixels.
    bool labelRotationManual=false;
    bool isText() const { return !text.empty(); }
    bool isHighlight() const { return !points.empty() && !freehand; }
    bool isLine() const { return !number && !isText() && !isHighlight() && shape==ScreenshotShape::None; }
 };
 class ScreenshotHistory {
    std::deque<std::vector<ScreenshotMark>> past, future;
  public:
    void remember(const std::vector<ScreenshotMark> &);
    bool undo(std::vector<ScreenshotMark> &);
    bool redo(std::vector<ScreenshotMark> &);
    bool canUndo() const { return !past.empty(); }
    bool canRedo() const { return !future.empty(); }
 };
 void resolveScreenshotLinks(std::vector<ScreenshotMark> &);
 void linkScreenshotEndpoint(ScreenshotMark &, bool start, POINT drop,
                            const std::vector<ScreenshotMark> &, double tolerance);
 enum class MarkPart { None, Body, Start, End, Radius, Thickness, Rotation, Label };
 POINT screenshotThicknessHandle(const ScreenshotMark &, double clearance = 16);
 ScreenshotMark cloneScreenshotMark(const ScreenshotMark &, const std::vector<ScreenshotMark> &, int width, int height);
 int nextScreenshotNumber(const std::vector<ScreenshotMark> &);
 MarkPart hitScreenshotMark(const ScreenshotMark &, POINT, double tolerance);
 ScreenshotMark dragScreenshotMark(const ScreenshotMark &, MarkPart, POINT origin, POINT position,
                                  int width, int height, bool snapRotation=false);
 POINT constrainScreenshotShape(ScreenshotShape, POINT anchor, POINT position, int width, int height);
 RECT screenshotTextBounds(const ScreenshotMark &);
 POINT screenshotTextRotationHandle(const ScreenshotMark &, double clearance=24);
 ScreenshotMark screenshotArrowLabel(const ScreenshotMark &);
 // Render at source resolution; never reads or writes the system clipboard.
 Clip screenshotClip(HDC source, int width, int height, const std::vector<ScreenshotMark> &marks);
 }
@@ -45,7 +45,7 @@ bool validId(const std::wstring &id)
 void validateSettings(const Settings &s)
 {
    std::vector<Hotkey> used;
-    std::vector<std::wstring> keys{s.toggle, s.casing, s.translit, s.undo, s.clipboard};
+    std::vector<std::wstring> keys{s.toggle, s.casing, s.translit, s.undo, s.clipboard, s.screenshot};
    keys.insert(keys.end(), s.direct.begin(), s.direct.end());
    for (auto &text : keys)
    {
@@ -150,6 +150,7 @@ Settings decodeSettings(const Bytes &bytes, const std::vector<Layout> &layouts)
    s.translit = str(j, "translitHotkey", s.translit);
    s.undo = str(j, "undoHotkey", s.undo);
    s.clipboard = str(j, "clipboardHotkey", s.clipboard);
    s.screenshot = str(j, "screenshotHotkey", s.screenshot);
    if (j.contains("layouts"))
    {
        s.cycle.clear();
@@ -203,7 +204,8 @@ Bytes encodeSettings(const Settings &s)
              {"caseHotkey", utf8(s.casing)},
              {"translitHotkey", utf8(s.translit)},
              {"undoHotkey", utf8(s.undo)},
-              {"clipboardHotkey", utf8(s.clipboard)}};
+              {"clipboardHotkey", utf8(s.clipboard)},
              {"screenshotHotkey", utf8(s.screenshot)}};
    j["layouts"] = Json::array();
    for (auto &id : s.cycle)
        j["layouts"].push_back(utf8(id));
@@ -255,7 +255,7 @@ void error(HWND w, const std::exception &e)
    MessageBoxW(w, wide(e.what()).c_str(), L"KSwitcher", MB_OK | MB_ICONWARNING);
 }
 HWND makeWindow(App &app, const wchar_t *cls, const wchar_t *title, WNDPROC proc, int width, int height,
-                DWORD extra = 0)
+                DWORD extra = 0, bool resizable = true)
 {
    WNDCLASSW wc{};
    wc.hInstance = app.instance;
@@ -267,7 +267,8 @@ HWND makeWindow(App &app, const wchar_t *cls, const wchar_t *title, WNDPROC proc
    RegisterClassW(&wc);
    UINT dpi = GetDpiForSystem();
    RECT rect{0, 0, MulDiv(width, dpi, 96), MulDiv(height, dpi, 96)};
-    DWORD style = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX | WS_THICKFRAME | WS_MAXIMIZEBOX | extra;
+    DWORD style = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX | extra;
    if (resizable) style |= WS_THICKFRAME | WS_MAXIMIZEBOX;
    AdjustWindowRectExForDpi(&rect, style, FALSE, WS_EX_APPWINDOW, dpi);
    POINT cursor{};
    GetCursorPos(&cursor);
@@ -822,6 +823,7 @@ void fillSettings(HWND w, SettingsView *v)
    value(w, 212, s.translit);
    value(w, 213, s.undo);
    value(w, 214, s.clipboard);
    value(w, 215, s.screenshot);
    value(w, 240, std::to_wstring(s.maxItems));
    value(w, 241, std::to_wstring(s.maxMiB));
    value(w, 242, std::to_wstring(s.maxImageMiB));
@@ -871,6 +873,7 @@ Settings collectSettings(HWND w, SettingsView *v)
    s.translit = value(w, 212);
    s.undo = value(w, 213);
    s.clipboard = value(w, 214);
    s.screenshot = value(w, 215);
    s.maxItems = integer(w, 240);
    s.maxMiB = integer(w, 241);
    s.maxImageMiB = integer(w, 242);
@@ -1630,7 +1633,7 @@ void showSettings(App &app, bool visible)
        activateWindow(target);
        return;
    }
-    HWND w = makeWindow(app, L"KSwitcher.Settings", L"KSwitcher settings", settingsProc, 780, 660);
+    HWND w = makeWindow(app, L"KSwitcher.Settings", L"KSwitcher settings", settingsProc, 780, 660, 0, false);
    app.settingsWindow = w;
    label(w, L"Text conversion", 18, 16);
    checkbox(w, L"Convert recently typed text when nothing is selected", 201, 18, 43, 390);
@@ -1642,13 +1645,13 @@ void showSettings(App &app, bool visible)
    checkbox(w, L"Write log", 208, 240, 184, 160);
    label(w, L"Click a shortcut and press the desired keys", 420, 16, 350);
    const wchar_t *names[] = {L"Next layout", L"Change case", L"Transliterate", L"Undo",
-                              L"Clipboard history"};
+                              L"Clipboard history", L"Screen capture"};
-    for (int i = 0; i < 5; ++i)
+    for (int i = 0; i < 6; ++i)
    {
        label(w, names[i], 420, 48 + i * 30, 115);
        hotkeyEdit(app, w, 210 + i, 540, 44 + i * 30, 220);
    }
-    checkbox(w, L"Automatically correct layout (experimental)", 207, 420, 195, 350);
+    checkbox(w, L"Automatically correct layout (experimental)", 207, 420, 211, 350);
    label(w, L"Layout cycle — top to bottom", 18, 210, 400);
    control(w, L"LISTBOX", L"", WS_TABSTOP | WS_VSCROLL | LBS_NOTIFY | LBS_NOINTEGRALHEIGHT | WS_BORDER, 220,
            18, 232, 470, 190);
@@ -1718,7 +1721,8 @@ void showShortcuts(App &app)
 {
    auto &s = app.settings;
    std::wstring text = L"Next layout: " + s.toggle + L"\nChange case: " + s.casing + L"\nTransliterate: " +
-                        s.translit + L"\nUndo: " + s.undo + L"\nClipboard history: " + s.clipboard + L"\n";
+                        s.translit + L"\nUndo: " + s.undo + L"\nClipboard history: " + s.clipboard +
                        L"\nScreen capture: " + s.screenshot + L"\n";
    for (size_t i = 0; i < std::min(app.layouts.size(), s.direct.size()); ++i)
        if (!s.direct[i].empty())
            text += L"\n" + app.layouts[i].name + L": " + s.direct[i];
@@ -2,7 +2,7 @@
 #include "platform.h"
 namespace ks
 {
-inline constexpr wchar_t AppVersion[] = L"0.3.0";
+inline constexpr wchar_t AppVersion[] = L"0.4.0";
 inline constexpr UINT UpdateMessage = WM_APP + 7;
 struct UpdateResult
 {
@@ -1,7 +1,9 @@
 #include "app.h"
 #include "ui_geometry.h"
 #include "screenshot.h"
 #include <commctrl.h>
 #include <iostream>
 #include <cmath>
 namespace ks {
 struct InputRegressionAccess {
    static void setup(App &a) { a.hookBindings = {{Toggle,{MOD_CONTROL,VK_F12}}, {Case,{MOD_CONTROL|MOD_SHIFT,'U'}}}; }
@@ -29,6 +31,410 @@ int main(int argc, char **argv) {
            // Message-only window: no hooks, synthetic input, clipboard changes or visible editor.
            app.window=CreateWindowExW(0,L"STATIC",L"Input tests",0,0,0,0,0,HWND_MESSAGE,nullptr,nullptr,nullptr);
            require(app.window!=nullptr,"message-only test window");
            for(int variant=0;variant<3;++variant) for(int icon=0;icon<15;++icon)
                for(int size:{22,44,55}) {
                    auto handle=(HICON)LoadImageW(app.instance,MAKEINTRESOURCEW(icon<9?300+variant*10+icon:400+variant*10+icon-9),IMAGE_ICON,size,size,0);
                    require(handle!=nullptr,"Lucide toolbar icon loads at standard and high DPI");
                    DestroyIcon(handle);
                }
            {
                ks::ScreenshotHistory history;
                std::vector<ks::ScreenshotMark> marks;
                require(!history.undo(marks) && !history.redo(marks),"empty annotation history is safe");
                history.remember(marks);
                marks.push_back({{20,20},{20,20},1,24});
                history.remember(marks);
                marks.push_back({{44,20},{100,20},0,15,8,1,0});
                require(history.undo(marks) && marks.size()==1 && history.canRedo(),"undo preserves state for redo");
                require(history.undo(marks) && marks.empty(),"multiple undo steps restore empty canvas");
                require(history.redo(marks) && marks[0].radius==24,"redo restores marker size");
                require(history.redo(marks) && marks.size()==2 && marks[1].thickness==8 && marks[1].fromNumber==1,
                        "redo restores arrow style and endpoint links");
                require(!history.canRedo(),"redo becomes unavailable after last replay");
                history.undo(marks);
                history.remember(marks); marks[0].radius=40;
                require(!history.canRedo() && !history.redo(marks),"new edit discards redo branch");
                require(history.undo(marks) && marks[0].radius==24,"new branch remains undoable");
                ks::ScreenshotHistory bounded;
                for(int i=0;i<110;++i) { bounded.remember(marks); marks[0].radius=i; }
                int count=0; while(bounded.undo(marks)) ++count;
                require(count==100,"annotation undo history stays bounded");
                count=0; while(bounded.redo(marks)) ++count;
                require(count==100 && marks[0].radius==109,"bounded history can replay all retained edits");
            }
            {
                HDC dc=CreateCompatibleDC(nullptr);
                BITMAPINFO info{};
                info.bmiHeader={sizeof(BITMAPINFOHEADER),160,-100,1,32,BI_RGB};
                void *pixels{};
                auto bitmap=CreateDIBSection(dc,&info,DIB_RGB_COLORS,&pixels,nullptr,0);
                auto old=SelectObject(dc,bitmap);
                PatBlt(dc,0,0,160,100,WHITENESS);
                auto plain=ks::screenshotClip(dc,160,100,{});
                auto marked=ks::screenshotClip(dc,160,100,{{{30,30},{30,30},1},{{60,70},{130,70},0}});
                auto &bytes=marked.formats[0].data;
                BITMAPINFOHEADER header{}; memcpy(&header,bytes.data(),sizeof(header));
                require(header.biWidth==160&&header.biHeight==-100,"capture preserves source resolution and orientation");
                require(bytes.size()==sizeof(header)+160*100*4,"capture exports complete 32-bit DIB");
                auto pixel=[&](int x,int y) { auto offset=sizeof(header)+(y*160+x)*4; return RGB(bytes[offset+2],bytes[offset+1],bytes[offset]); };
                require(pixel(30,20)==RGB(225,42,50),"number badge renders in exported image");
                require(pixel(90,70)==RGB(225,42,50),"arrow shaft renders in exported image");
                require(pixel(5,5)==RGB(255,255,255),"unmarked pixels preserved");
                ks::ScreenshotMark blueArrow{{20,50},{140,50},0}; blueArrow.color=RGB(0,80,220);
                ks::ScreenshotMark greenBadge{{30,30},{30,30},1}; greenBadge.color=RGB(0,200,80);
                auto colored=ks::screenshotClip(dc,160,100,{blueArrow,greenBadge});
                auto colorAt=[&](int x,int y) {
                    auto &b=colored.formats[0].data; auto at=sizeof(BITMAPINFOHEADER)+(y*160+x)*4;
                    return RGB(b[at+2],b[at+1],b[at]);
                };
                require(colorAt(70,50)==blueArrow.color && colorAt(132,50)==blueArrow.color,
                        "arrow shaft and head use object color");
                require(colorAt(30,20)==greenBadge.color,"badge fill uses object color");
                ks::ScreenshotHistory recolors;
                std::vector<ks::ScreenshotMark> coloredMarks{blueArrow,greenBadge};
                recolors.remember(coloredMarks); coloredMarks[0].color=RGB(200,0,100);
                recolors.remember(coloredMarks); coloredMarks[1].color=RGB(255,255,0);
                require(recolors.undo(coloredMarks) && coloredMarks[1].color==greenBadge.color,"undo restores badge color");
                require(recolors.undo(coloredMarks) && coloredMarks[0].color==blueArrow.color,"undo restores arrow color");
                require(recolors.redo(coloredMarks) && coloredMarks[0].color==RGB(200,0,100),"redo restores arrow recoloring");
                require(ks::cloneScreenshotMark(greenBadge,{greenBadge},160,100).color==greenBadge.color,
                        "cloned badge retains customized color");
                ks::ScreenshotMark thickArrow{{20,50},{140,50},0,15,12};
                auto grip=ks::screenshotThicknessHandle(thickArrow);
                require(grip.x==80 && grip.y==72,"thickness grip sits beside arrow midpoint");
                auto thicker=ks::dragScreenshotMark(thickArrow,ks::MarkPart::Thickness,grip,{grip.x,grip.y+4},160,100);
                require(thicker.thickness==20 && thicker.from.x==20 && thicker.to.x==140,
                        "dragging thickness grip changes width without changing endpoints");
                require(ks::dragScreenshotMark(thickArrow,ks::MarkPart::Thickness,grip,{grip.x+20,grip.y},160,100).thickness==12,
                        "movement along arrow does not change thickness");
                require(ks::dragScreenshotMark(thickArrow,ks::MarkPart::Thickness,grip,{grip.x,0},160,100).thickness==1,
                        "thickness grip respects minimum width");
                auto cloned=ks::cloneScreenshotMark(thickArrow,{},160,100);
                require(cloned.thickness==12 && cloned.from.x!=thickArrow.from.x && cloned.to.x-cloned.from.x==120,
                        "cloned arrow is offset and preserves dimensions and style");
                auto thick=ks::screenshotClip(dc,160,100,{thickArrow});
                auto shaftEdge=sizeof(BITMAPINFOHEADER)+(54*160+40)*4;
                require(thick.formats[0].data[shaftEdge+2]==225 && thick.formats[0].data[shaftEdge+1]==42,
                        "export renders edited arrow thickness");
                thickArrow.thickness=1;
                auto thin=ks::screenshotClip(dc,160,100,{thickArrow});
                require(thin.formats[0].data[shaftEdge+1]==255,"thin arrow leaves surrounding pixels untouched");
                thickArrow.thickness=12;
                require(ks::hitScreenshotMark(thickArrow,{60,55},1)==ks::MarkPart::Body,
                        "thick arrow can be selected along its visible edge");
                require(ks::dragScreenshotMark(thickArrow,ks::MarkPart::End,{140,50},{145,70},160,100).thickness==12,
                        "editing arrow geometry preserves thickness");
                ks::ScreenshotMark badge{{60,50},{60,50},2};
                auto clonedBadge=ks::cloneScreenshotMark(badge,{badge,{{90,20},{90,20},5}},160,100);
                require(clonedBadge.number==1 && clonedBadge.radius==15 && clonedBadge.from.x==76,
                        "cloned badge fills first numbering gap and keeps diameter");
                require(ks::nextScreenshotNumber({})==1,"empty capture starts numbering at one");
                std::vector<ks::ScreenshotMark> numbered{
                    {{10,10},{10,10},4},{{20,10},{20,10},1},{{30,10},{30,10},3},{{0,0},{100,0},0}};
                require(ks::nextScreenshotNumber(numbered)==2,"new badge fills interior gap regardless of stacking order");
                numbered.push_back({{40,10},{40,10},2});
                require(ks::nextScreenshotNumber(numbered)==5,"full sequence advances past existing numbers");
                numbered.erase(numbered.begin()+1);
                require(ks::nextScreenshotNumber(numbered)==1,"deleted first number is reused");
                require(numbered[0].number==4 && numbered[1].number==3,"number allocation never renumbers existing objects");
                std::vector<ks::ScreenshotMark> linked{
                    {{30,50},{30,50},1}, {{130,50},{130,50},2}, {{30,50},{130,50},0}};
                ks::linkScreenshotEndpoint(linked[2],true,{30,50},linked,6);
                ks::linkScreenshotEndpoint(linked[2],false,{130,50},linked,6);
                ks::resolveScreenshotLinks(linked);
                require(linked[2].fromNumber==1 && linked[2].toNumber==2 && linked[2].from.x==45 && linked[2].to.x==115,
                        "arrow endpoints attach to badge rims");
                auto clonedLinked=ks::cloneScreenshotMark(linked[2],linked,160,100);
                require(clonedLinked.fromNumber==0 && clonedLinked.toNumber==0,"cloned arrow does not retain original links");
                auto widthLinked=ks::dragScreenshotMark(linked[2],ks::MarkPart::Thickness,{80,70},{80,74},160,100);
                require(widthLinked.fromNumber==1 && widthLinked.toNumber==2,"thickness handle preserves endpoint links");
                linked[0].from.y=20; linked[0].to.y=20;
                linked[1].radius=25;
                ks::resolveScreenshotLinks(linked);
                require(linked[2].from.y>20 && linked[2].from.y<50 && linked[2].to.x<110,
                        "linked arrows follow badge movement and resize");
                auto detached=ks::dragScreenshotMark(linked[2],ks::MarkPart::Start,linked[2].from,{10,90},160,100);
                require(detached.fromNumber==0 && detached.toNumber==2,"endpoint drag detaches only that endpoint");
                ks::linkScreenshotEndpoint(detached,true,{10,90},linked,6);
                require(detached.fromNumber==0,"dropping away from badges remains detached");
                auto translated=ks::dragScreenshotMark(linked[2],ks::MarkPart::Body,{80,35},{85,40},160,100);
                require(translated.fromNumber==0 && translated.toNumber==0,"moving whole arrow detaches both endpoints");
                auto lastPoint=linked[2].from;
                linked.erase(linked.begin());
                ks::resolveScreenshotLinks(linked);
                require(linked[1].fromNumber==0 && linked[1].toNumber==2 && linked[1].from.x==lastPoint.x,
                        "deleting badge detaches without moving orphaned endpoint");
                linked.push_back({{10,10},{10,10},1});
                ks::resolveScreenshotLinks(linked);
                require(linked[1].fromNumber==0,"reused number cannot reconnect a deleted link");
                require(ks::hitScreenshotMark(badge,{60,50},20)==ks::MarkPart::Body,"badge center moves even with large hit tolerance");
                require(ks::hitScreenshotMark(badge,{75,50},6)==ks::MarkPart::Radius,"badge rim exposes resize handle");
                auto enlarged=ks::dragScreenshotMark(badge,ks::MarkPart::Radius,{75,50},{95,50},160,100);
                require(enlarged.radius==35 && enlarged.number==2,"badge resizes without changing its number");
                auto large=ks::screenshotClip(dc,160,100,{enlarged});
                const auto &largeBytes=large.formats[0].data;
                auto red=sizeof(BITMAPINFOHEADER)+(50*160+90)*4;
                require(largeBytes[red+2]==225 && largeBytes[red+1]==42,"export uses edited badge diameter");
                require(ks::dragScreenshotMark(badge,ks::MarkPart::Radius,{75,50},{60,50},160,100).radius==8,
                        "badge diameter has a usable minimum");
                ks::ScreenshotMark arrow{{20,20},{100,60},0};
                require(ks::hitScreenshotMark(arrow,{60,40},5)==ks::MarkPart::Body,"arrow shaft selects whole arrow");
                require(ks::hitScreenshotMark(arrow,{100,60},5)==ks::MarkPart::End,"arrow tip selects endpoint");
                require(ks::hitScreenshotMark(arrow,{60,80},5)==ks::MarkPart::None,"empty canvas misses arrow");
                auto moved=ks::dragScreenshotMark(arrow,ks::MarkPart::Body,{60,40},{150,90},160,100);
                require(moved.to.x==159 && moved.to.y==99 && moved.to.x-moved.from.x==80 && moved.to.y-moved.from.y==40,
                        "moving arrow preserves shape at image boundary");
                auto stretched=ks::dragScreenshotMark(arrow,ks::MarkPart::End,{100,60},{140,80},160,100);
                require(stretched.from.x==20 && stretched.from.y==20 && stretched.to.x==140 && stretched.to.y==80,
                        "endpoint drag leaves opposite endpoint fixed");
                require(ks::screenshotClip(dc,160,100,{}).formats[0].data==plain.formats[0].data,
                        "annotations do not modify original capture");
                ks::ScreenshotMark highlight{{20,50},{120,50},0,15,24};
                highlight.points={{20,50},{120,50}}; highlight.color=RGB(255,255,0);
                SetPixel(dc,60,50,RGB(0,0,0));
                auto yellow=ks::screenshotClip(dc,160,100,{highlight});
                auto readPixel=[](const ks::Clip &clip,int x,int y) {
                    auto &b=clip.formats[0].data; auto offset=sizeof(BITMAPINFOHEADER)+(y*160+x)*4;
                    return RGB(b[offset+2],b[offset+1],b[offset]);
                };
                require(readPixel(yellow,40,50)==RGB(255,255,153),"highlight is translucent in exported image");
                require(readPixel(yellow,60,50)==RGB(0,0,0),"highlight keeps black text legible");
                require(readPixel(yellow,40,10)==RGB(255,255,255),"highlight leaves pixels outside brush unchanged");
                highlight.points.push_back({20,50});
                require(readPixel(ks::screenshotClip(dc,160,100,{highlight}),40,50)==RGB(255,255,153),
                        "overlapping a stroke with itself does not accumulate opacity");
                ks::ScreenshotHistory colorHistory;
                std::vector<ks::ScreenshotMark> strokes{highlight};
                colorHistory.remember(strokes); strokes[0].color=RGB(0,255,255);
                require(readPixel(ks::screenshotClip(dc,160,100,strokes),40,50)==RGB(153,255,255),
                        "changing highlight color rerenders original stroke");
                require(colorHistory.undo(strokes) && strokes[0].color==RGB(255,255,0),"undo restores highlight color");
                require(colorHistory.redo(strokes) && strokes[0].color==RGB(0,255,255),"redo restores highlight recolor");
                require(ks::hitScreenshotMark(highlight,{80,55},1)==ks::MarkPart::Body,"highlight stroke is selectable");
                require(ks::hitScreenshotMark(highlight,{80,10},1)==ks::MarkPart::None,"highlight hit test excludes empty area");
                auto movedHighlight=ks::dragScreenshotMark(highlight,ks::MarkPart::Body,{20,50},{30,60},160,100);
                require(movedHighlight.points[1].x==130 && movedHighlight.points[1].y==60,"moving highlight translates entire stroke");
                auto cloneHighlight=ks::cloneScreenshotMark(highlight,{highlight},160,100);
                require(cloneHighlight.points[0].x!=highlight.points[0].x && cloneHighlight.color==highlight.color &&
                            cloneHighlight.thickness==24 && cloneHighlight.number==0,"cloning highlight preserves brush and color");
                PatBlt(dc,0,0,160,100,WHITENESS);
                ks::ScreenshotMark line{{20,50},{140,50},0}; line.ends=ks::LineEnds::None;
                ks::ScreenshotMark textMark{{5,5},{5,5},0}; textMark.text=L"Hello &\r\nСвіт";
                textMark.fontSize=14; textMark.color=RGB(0,80,180);
                auto textBounds=ks::screenshotTextBounds(textMark);
                require(textBounds.right>30 && textBounds.bottom>30,"multiline Unicode text is measured");
                auto textImage=ks::screenshotClip(dc,160,100,{textMark});
                int textInk=0;
                for(int y=5;y<textBounds.bottom;++y) for(int x=5;x<textBounds.right;++x)
                    if(readPixel(textImage,x,y)==textMark.color) ++textInk;
                require(textInk>20,"text exports visible colored glyphs");
                require(ks::hitScreenshotMark(textMark,{6,6},2)==ks::MarkPart::Body,"text is movable inside its bounds");
                require(ks::hitScreenshotMark(textMark,{150,90},2)==ks::MarkPart::None,"text excludes empty canvas");
                auto bigText=textMark; bigText.fontSize=28;
                auto bigBounds=ks::screenshotTextBounds(bigText);
                require(bigBounds.bottom>textBounds.bottom && bigBounds.right>textBounds.right,"font size scales text bounds");
                auto serifText=textMark; serifText.fontName=L"Courier New"; serifText.fontWeight=FW_BOLD; serifText.fontItalic=true;
                require(ks::screenshotClip(dc,160,100,{serifText}).formats[0].data!=textImage.formats[0].data,
                        "font family and style affect exported glyphs");
                auto movedText=ks::dragScreenshotMark(textMark,ks::MarkPart::Body,{6,6},{16,16},160,100);
                auto rotatedText=textMark; rotatedText.rotation=90;
                auto rotatedBounds=ks::screenshotTextBounds(rotatedText);
                require(std::abs((rotatedBounds.right-rotatedBounds.left)-(textBounds.bottom-textBounds.top))<=1,
                        "rotation transforms text bounds");
                POINT center{(textBounds.left+textBounds.right)/2,(textBounds.top+textBounds.bottom)/2};
                require(ks::hitScreenshotMark(rotatedText,center,2)==ks::MarkPart::Body,"rotated text hit test follows text");
                auto rotationGrip=ks::screenshotTextRotationHandle(textMark);
                auto rotation=ks::dragScreenshotMark(textMark,ks::MarkPart::Rotation,rotationGrip,{center.x+40,center.y-25},160,100,true);
                require(std::abs(std::remainder(rotation.rotation,15))<0.001 && rotation.rotation!=0,"Shift snaps rotation to 15 degrees");
                auto reverseRotation=ks::dragScreenshotMark(textMark,ks::MarkPart::Rotation,rotationGrip,{center.x-40,center.y-25},160,100,false);
                require(reverseRotation.rotation<0,"text rotates in the opposite direction");
                require(ks::screenshotClip(dc,160,100,{rotatedText}).formats[0].data!=textImage.formats[0].data,
                        "rotation is included in exported text pixels");
                require(ks::cloneScreenshotMark(rotatedText,{rotatedText},160,100).rotation==90,"cloning preserves text rotation");
                ks::ScreenshotMark labeled{{20,70},{140,70},0}; labeled.label=L"Label"; labeled.fontSize=12;
                auto label=ks::screenshotArrowLabel(labeled);
                auto labelBounds=ks::screenshotTextBounds(label);
                POINT labelCenter{(labelBounds.left+labelBounds.right)/2,(labelBounds.top+labelBounds.bottom)/2};
                auto labelGrip=ks::screenshotTextRotationHandle(label);
                auto diagonal=labeled; diagonal.to={100,150};
                for(int degrees:{0,45,90,135,180,-135,-90,-45}) {
                    double angle=degrees*3.141592653589793/180;
                    auto turning=labeled; turning.from={100,100};
                    turning.to={100+LONG(std::lround(80*std::cos(angle))),100+LONG(std::lround(80*std::sin(angle)))};
                    auto box=ks::screenshotTextBounds(ks::screenshotArrowLabel(turning));
                    double x=(box.left+box.right)/2.0-(turning.from.x+turning.to.x)/2.0;
                    double y=(box.top+box.bottom)/2.0-(turning.from.y+turning.to.y)/2.0;
                    require(std::abs(-x*std::sin(angle)+y*std::cos(angle)+24)<1.5,
                            "caption keeps its perpendicular distance and side as line rotates");
                    require(std::abs(x*std::cos(angle)+y*std::sin(angle))<1.5,
                            "caption remains centered along rotated line");
                }
                auto beforeDrag=ks::screenshotTextBounds(ks::screenshotArrowLabel(diagonal));
                auto offsetDiagonal=ks::dragScreenshotMark(diagonal,ks::MarkPart::Label,{0,0},{12,-8},200,200);
                require(!offsetDiagonal.labelRotationManual,"moving caption preserves automatic rotation");
                auto movedCaptionSlope=ks::dragScreenshotMark(offsetDiagonal,ks::MarkPart::End,offsetDiagonal.to,{20,150},200,200);
                require(std::abs(ks::screenshotArrowLabel(movedCaptionSlope).rotation-90)<0.001,
                        "repositioned caption continues following line angle");
                auto afterDrag=ks::screenshotTextBounds(ks::screenshotArrowLabel(offsetDiagonal));
                require(std::abs(afterDrag.left-beforeDrag.left-12)<=1 && std::abs(afterDrag.top-beforeDrag.top+8)<=1,
                        "dragging diagonal caption follows pointer in screen coordinates");
                require(std::abs(ks::screenshotArrowLabel(diagonal).rotation-45)<0.001,"caption defaults to line angle");
                auto changedSlope=ks::dragScreenshotMark(diagonal,ks::MarkPart::End,diagonal.to,{20,150},200,200);
                require(std::abs(ks::screenshotArrowLabel(changedSlope).rotation-90)<0.001,"automatic caption follows endpoint movement");
                auto reversed=diagonal; std::swap(reversed.from,reversed.to);
                require(std::abs(ks::screenshotArrowLabel(reversed).rotation-45)<0.001,"automatic caption remains upright on reversed line");
                auto diagonalLabel=ks::screenshotArrowLabel(diagonal);
                auto diagonalGrip=ks::screenshotTextRotationHandle(diagonalLabel);
                auto clickOnly=ks::dragScreenshotMark(diagonal,ks::MarkPart::Rotation,diagonalGrip,diagonalGrip,200,200,true);
                require(!clickOnly.labelRotationManual,"clicking rotation handle without dragging preserves automatic angle");
                auto manual=ks::dragScreenshotMark(diagonal,ks::MarkPart::Rotation,diagonalGrip,{diagonalGrip.x+12,diagonalGrip.y},200,200,false);
                require(manual.labelRotationManual && manual.rotation>45 && manual.rotation<90,
                        "manual rotation starts at displayed automatic angle without jumping");
                auto manualResized=ks::dragScreenshotMark(manual,ks::MarkPart::End,manual.to,{20,150},200,200);
                require(ks::screenshotArrowLabel(manualResized).rotation==manual.rotation,"manual angle survives line resizing");
                require(ks::cloneScreenshotMark(manual,{manual},200,200).labelRotationManual,"clone preserves manual rotation mode");
                ks::ScreenshotHistory autoAngleHistory; std::vector<ks::ScreenshotMark> autoAngles{diagonal};
                autoAngleHistory.remember(autoAngles); autoAngles[0]=manual;
                require(autoAngleHistory.undo(autoAngles) && !autoAngles[0].labelRotationManual,"undo restores automatic angle mode");
                require(autoAngleHistory.redo(autoAngles) && autoAngles[0].labelRotationManual,"redo restores manual angle mode");
                auto curvedCaption=diagonal; curvedCaption.freehand=true;
                curvedCaption.points={{20,70},{60,70},{60,110},{100,150}};
                require(std::abs(ks::screenshotArrowLabel(curvedCaption).rotation-90)<0.001,"curve caption follows its middle segment");
                auto rotatedCaption=ks::dragScreenshotMark(labeled,ks::MarkPart::Rotation,labelGrip,
                    {labelCenter.x+35,labelCenter.y-20},160,100,true);
                require(rotatedCaption.rotation!=0 && std::abs(std::remainder(rotatedCaption.rotation,15))<0.001,
                        "arrow caption rotation snaps to 15 degrees");
                require(rotatedCaption.from.x==labeled.from.x && rotatedCaption.from.y==labeled.from.y &&
                        rotatedCaption.to.x==labeled.to.x && rotatedCaption.to.y==labeled.to.y &&
                        rotatedCaption.labelOffset.x==labeled.labelOffset.x && rotatedCaption.labelOffset.y==labeled.labelOffset.y,
                        "rotating caption preserves arrow geometry and caption position");
                require(ks::screenshotArrowLabel(rotatedCaption).rotation==rotatedCaption.rotation,
                        "linked caption uses the regular text rotation");
                require(ks::screenshotClip(dc,160,100,{rotatedCaption}).formats[0].data!=ks::screenshotClip(dc,160,100,{labeled}).formats[0].data,
                        "caption rotation is exported");
                require(ks::cloneScreenshotMark(rotatedCaption,{rotatedCaption},160,100).rotation==rotatedCaption.rotation,
                        "cloning retains caption angle");
                ks::ScreenshotHistory captionHistory; std::vector<ks::ScreenshotMark> captionMarks{labeled};
                captionHistory.remember(captionMarks); captionMarks[0]=rotatedCaption;
                require(captionHistory.undo(captionMarks) && captionMarks[0].rotation==0,"undo restores caption angle");
                require(captionHistory.redo(captionMarks) && captionMarks[0].rotation==rotatedCaption.rotation,"redo restores caption angle");
                require(ks::hitScreenshotMark(labeled,labelCenter,2)==ks::MarkPart::Label,"arrow label is independently draggable");
                auto repositioned=ks::dragScreenshotMark(labeled,ks::MarkPart::Label,labelCenter,{labelCenter.x+10,labelCenter.y-8},160,100);
                require(repositioned.labelOffset.x==10 && repositioned.labelOffset.y==-32 && repositioned.from.x==20,
                        "label drag changes only its offset");
                auto movedArrow=ks::dragScreenshotMark(labeled,ks::MarkPart::Body,{20,70},{25,75},160,100);
                auto movedLabel=ks::screenshotArrowLabel(movedArrow);
                require(movedLabel.from.x==label.from.x+5 && movedLabel.from.y==label.from.y+5,"label follows arrow movement");
                auto resizedArrow=ks::dragScreenshotMark(labeled,ks::MarkPart::End,labeled.to,{120,70},160,100);
                require(ks::screenshotArrowLabel(resizedArrow).from.x==label.from.x-10,"label follows arrow resizing");
                auto noLabel=labeled; noLabel.label.clear();
                require(ks::screenshotClip(dc,160,100,{labeled}).formats[0].data!=ks::screenshotClip(dc,160,100,{noLabel}).formats[0].data,
                        "arrow label is included in clipboard export");
                require(ks::cloneScreenshotMark(labeled,{labeled},160,100).label==labeled.label,"cloning retains arrow label");
                ks::ScreenshotHistory annotationHistory; std::vector<ks::ScreenshotMark> annotations{rotatedText,labeled};
                annotationHistory.remember(annotations); annotations[0]=rotation; annotations[1]=repositioned;
                require(annotationHistory.undo(annotations) && annotations[0].rotation==90 && annotations[1].labelOffset.x==0,
                        "undo restores rotation and label position");
                require(annotationHistory.redo(annotations) && annotations[0].rotation==rotation.rotation && annotations[1].labelOffset.x==10,
                        "redo restores rotation and label position");
                require(movedText.from.x==15 && movedText.from.y==15 && movedText.text==textMark.text,"text movement preserves content");
                auto oversizedText=textMark; oversizedText.fontSize=100;
                auto oversizedBounds=ks::screenshotTextBounds(oversizedText);
                require(oversizedBounds.right-oversizedBounds.left>160 && oversizedBounds.bottom-oversizedBounds.top>100,
                        "large text exceeds both canvas dimensions");
                for(int direction:{-1,1}) {
                    auto moved=ks::dragScreenshotMark(oversizedText,ks::MarkPart::Body,{0,0},{direction*20,direction*20},160,100);
                    require(moved.from.x==oversizedText.from.x+direction*20 && moved.from.y==oversizedText.from.y+direction*20,
                            "oversized text moves in either direction on both axes");
                    auto limited=ks::dragScreenshotMark(oversizedText,ks::MarkPart::Body,{0,0},{direction*10000,direction*10000},160,100);
                    auto bounds=ks::screenshotTextBounds(limited);
                    require(bounds.right>=16 && bounds.left<=144 && bounds.bottom>=16 && bounds.top<=84,
                            "oversized text remains selectable at canvas edges");
                }
                auto clonedText=ks::cloneScreenshotMark(serifText,{serifText},160,100);
                require(clonedText.text==serifText.text && clonedText.fontName==serifText.fontName &&
                        clonedText.fontWeight==FW_BOLD && clonedText.fontItalic,"text cloning preserves font and content");
                ks::ScreenshotHistory textHistory; std::vector<ks::ScreenshotMark> texts{textMark};
                textHistory.remember(texts); texts[0]=serifText; texts[0].text=L"Changed";
                require(textHistory.undo(texts) && texts[0].text==textMark.text && texts[0].fontName==textMark.fontName,
                        "undo restores text and font");
                require(textHistory.redo(texts) && texts[0].text==L"Changed" && texts[0].fontItalic,
                        "redo restores text edits");
                for(auto shape:{ks::ScreenshotShape::Rectangle,ks::ScreenshotShape::Circle,ks::ScreenshotShape::Ellipse}) {
                    ks::ScreenshotMark figure{{30,20},{90,80},0}; figure.shape=shape;
                    if(shape==ks::ScreenshotShape::Ellipse) figure.to.x=130;
                    figure.color=RGB(0,140,80); figure.thickness=4;
                    auto image=ks::screenshotClip(dc,160,100,{figure});
                    int mid=(figure.from.x+figure.to.x)/2;
                    require(readPixel(image,mid,20)==figure.color,"shape contour renders in chosen color");
                    require(readPixel(image,mid,50)==RGB(255,255,255),"shape interior remains transparent");
                    require(ks::hitScreenshotMark(figure,{mid,20},2)==ks::MarkPart::Body,"shape contour is movable");
                    require(ks::hitScreenshotMark(figure,{mid,50},2)==ks::MarkPart::None,"shape interior does not intercept objects");
                    auto resized=ks::dragScreenshotMark(figure,ks::MarkPart::End,figure.to,{100,85},160,100);
                    require(resized.shape==shape && resized.to.x==100,"shape corner can resize object");
                    if(shape==ks::ScreenshotShape::Circle)
                        require(resized.to.x-resized.from.x==resized.to.y-resized.from.y,"circle remains round when resized");
                    auto moved=ks::dragScreenshotMark(figure,ks::MarkPart::Body,{mid,20},{mid+5,25},160,100);
                    require(moved.from.x==35 && moved.to.x==figure.to.x+5,"moving shape preserves dimensions");
                    auto duplicate=ks::cloneScreenshotMark(figure,{figure},160,100);
                    require(duplicate.shape==shape && duplicate.color==figure.color,"cloning preserves shape and color");
                    ks::ScreenshotHistory history; std::vector<ks::ScreenshotMark> figures{figure};
                    history.remember(figures); figures[0]=resized;
                    require(history.undo(figures) && figures[0].to.x==figure.to.x,"shape resize can be undone");
                    require(history.redo(figures) && figures[0].to.x==resized.to.x,"shape resize can be redone");
                }
                auto circleCorner=ks::constrainScreenshotShape(ks::ScreenshotShape::Circle,{60,60},{0,10},160,100);
                require(circleCorner.x==0 && circleCorner.y==0,"circle supports reverse drawing and canvas boundaries");
                auto solidLine=ks::screenshotClip(dc,160,100,{line});
                require(readPixel(solidLine,28,47)==RGB(255,255,255) && readPixel(solidLine,132,47)==RGB(255,255,255),
                        "plain line has no arrowheads");
                for(auto ends:{ks::LineEnds::End,ks::LineEnds::Start,ks::LineEnds::Both}) {
                    line.ends=ends;
                    auto image=ks::screenshotClip(dc,160,100,{line});
                    require((readPixel(image,28,47)==line.color)==(ends!=ks::LineEnds::End),"start arrowhead matches ends setting");
                    require((readPixel(image,132,47)==line.color)==(ends!=ks::LineEnds::Start),"end arrowhead matches ends setting");
                }
                line.ends=ks::LineEnds::None;
                std::vector<ks::Bytes> styleImages;
                ks::ScreenshotMark shaky{{20,50},{140,50},0};
                shaky.freehand=true; shaky.ends=ks::LineEnds::Both;
                shaky.points={{20,50},{19,50},{40,50},{120,50},{141,50},{140,50}};
                auto shakyImage=ks::screenshotClip(dc,160,100,{shaky});
                require(readPixel(shakyImage,28,47)==shaky.color && readPixel(shakyImage,12,47)==RGB(255,255,255),
                        "start arrowhead points outward despite initial mouse jitter");
                require(readPixel(shakyImage,132,47)==shaky.color && readPixel(shakyImage,148,47)==RGB(255,255,255),
                        "end arrowhead points outward despite final mouse jitter");
                for(auto style:{ks::LineStyle::Solid,ks::LineStyle::Dotted,ks::LineStyle::Dashed,ks::LineStyle::DashDot}) {
                    line.style=style;
                    auto image=ks::screenshotClip(dc,160,100,{line});
                    int ink=0,gaps=0;
                    for(int x=25;x<135;++x) { if(readPixel(image,x,50)==line.color) ++ink; else ++gaps; }
                    require(ink>0 && (style==ks::LineStyle::Solid?gaps==0:gaps>0),"line pattern exports visible ink and expected gaps");
                    for(auto &previous:styleImages) require(previous!=image.formats[0].data,"line styles have distinct output");
                    styleImages.push_back(image.formats[0].data);
                }
                ks::ScreenshotMark curve{{20,80},{140,30},0}; curve.freehand=true; curve.ends=ks::LineEnds::None;
                curve.points={{20,80},{50,20},{90,70},{140,30}}; curve.color=RGB(0,80,220);
                auto curveImage=ks::screenshotClip(dc,160,100,{curve});
                require(!curve.isHighlight() && readPixel(curveImage,50,20)==curve.color,"freehand line exports opaque curved path");
                require(ks::hitScreenshotMark(curve,{50,20},3)==ks::MarkPart::Body,"curve hit test follows actual stroke");
                auto curveMoved=ks::dragScreenshotMark(curve,ks::MarkPart::Body,{50,20},{55,25},160,100);
                require(curveMoved.points[1].x==55 && curveMoved.points[1].y==25,"curve movement preserves all intermediate points");
                auto curveEnd=ks::dragScreenshotMark(curve,ks::MarkPart::End,curve.to,{150,40},160,100);
                require(curveEnd.points.back().x==150 && curveEnd.points.back().y==40 && curveEnd.points[1].y==20,
                        "curve endpoint editing preserves intermediate shape");
                curve.style=ks::LineStyle::DashDot; curve.ends=ks::LineEnds::Both;
                auto curveCopy=ks::cloneScreenshotMark(curve,{curve},160,100);
                require(curveCopy.freehand && curveCopy.style==curve.style && curveCopy.ends==curve.ends,"curve cloning preserves style and arrowheads");
                ks::ScreenshotHistory lineHistory;
                std::vector<ks::ScreenshotMark> lines{curve}; lineHistory.remember(lines);
                lines[0].style=ks::LineStyle::Dotted; lines[0].ends=ks::LineEnds::None;
                require(lineHistory.undo(lines) && lines[0].style==ks::LineStyle::DashDot && lines[0].ends==ks::LineEnds::Both,
                        "undo restores line pattern and endpoints");
                require(lineHistory.redo(lines) && lines[0].style==ks::LineStyle::Dotted && lines[0].ends==ks::LineEnds::None,
                        "redo restores line pattern and endpoints");
                SelectObject(dc,old); DeleteObject(bitmap); DeleteDC(dc);
            }
            auto event=[](DWORD vk,DWORD scan=0,bool own=false) {
                KBDLLHOOKSTRUCT k{}; k.vkCode=vk; k.scanCode=scan;
                k.flags=LLKHF_INJECTED|LLKHF_LOWER_IL_INJECTED;
@@ -0,0 +1,156 @@
 // Exercise the actual editor controls without capturing the desktop or changing the clipboard.
 // Including the implementation lets this integration test drive private editor state directly.
 #include "../src/screenshot.cpp"
 #include <iostream>
 int main()
 {
    auto temp=std::filesystem::temp_directory_path()/(L"KSwitcher-editor-test-"+std::to_wstring(GetCurrentProcessId()));
    try {
        INITCOMMONCONTROLSEX controls{sizeof(controls),ICC_STANDARD_CLASSES}; InitCommonControlsEx(&controls);
        ks::App app(GetModuleHandleW(nullptr),true,temp);
        app.window=CreateWindowW(L"STATIC",L"",0,0,0,0,0,HWND_MESSAGE,nullptr,app.instance,nullptr);
        ks::Capture c(app);
        c.image=std::make_unique<ks::Surface>(320,240);
        PatBlt(c.image->dc,0,0,320,240,WHITENESS); c.start={0,0}; c.end={320,240};
        WNDCLASSW cls{}; cls.hInstance=app.instance; cls.lpfnWndProc=ks::captureProc;
        cls.lpszClassName=L"KSwitcher.Editor.Integration"; RegisterClassW(&cls);
        auto window=CreateWindowW(cls.lpszClassName,L"Editor test",WS_POPUP,0,0,320,240,app.window,nullptr,app.instance,&c);
        auto require=[](bool ok,const char *message){ if(!ok) throw std::runtime_error(message); };
        require(window!=nullptr,"editor creation");
        ks::edit(window,c); ShowWindow(window,SW_HIDE);
        require(GetDlgItem(window,50)!=nullptr && c.statusHeight>0,"status bar is created");
        require(c.pencilCursor!=nullptr,"pencil drawing cursor loads");
        for(int size:{32,48,64,96}) {
            auto cursor=(HCURSOR)LoadImageW(app.instance,MAKEINTRESOURCEW(IDC_SCREENSHOT_PENCIL),IMAGE_CURSOR,size,size,0);
            ICONINFO info{};
            require(cursor && GetIconInfo(cursor,&info) && !info.fIcon,"pencil cursor supports standard and high DPI");
            require(info.xHotspot<UINT(size/3) && info.yHotspot>UINT(size*2/3),"pencil cursor draws from its tip");
            if(info.hbmMask) DeleteObject(info.hbmMask);
            if(info.hbmColor) DeleteObject(info.hbmColor);
            DestroyCursor(cursor);
        }
        wchar_t windowTitle[128]{}; GetWindowTextW(window,windowTitle,128);
        require(std::wstring(windowTitle)==L"KSwitcher — Screenshot","title has no usage hints");
        RECT client{}; GetClientRect(window,&client);
        require(c.view.bottom<=client.bottom-c.statusHeight,"image does not overlap status bar");
        ks::updateStatus(c);
        require(c.statusText.find(L"Freehand")!=std::wstring::npos,"default tool hint is shown");
        SendMessageW(GetDlgItem(window,13),WM_MOUSEMOVE,0,0);
        require(c.statusText.find(L"Ctrl+C")!=std::wstring::npos,"button hover shows action shortcut");
        SendMessageW(GetDlgItem(window,13),WM_MOUSELEAVE,0,0);
        require(c.statusText.find(L"Freehand")!=std::wstring::npos,"button leave restores contextual hint");
        for(int id:ks::ToolIds) require(GetDlgItem(window,id)!=nullptr,"all toolbar buttons created");
        require(GetDlgItem(window,34)!=nullptr && c.toolIcons[0][14]!=nullptr,"font icon created and loaded");
        ks::Mark text{{20,20},{20,20},0}; text.fontSize=18;
        ks::beginInlineText(window,c,text,-1);
        require(c.inlineText!=nullptr,"inline text control opens");
        ks::updateStatus(c);
        require(c.statusText.find(L"Ctrl+Enter")!=std::wstring::npos,"inline editing hint shows commit and cancel keys");
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L"First line\r\nДругий рядок");
        require(c.textDraft.text==L"First line\r\nДругий рядок","inline text changes update draft");
        SendMessageW(window,ks::FinishTextMessage,1,(LPARAM)c.inlineText);
        require(!c.inlineText && c.marks.size()==1 && c.marks[0].text==text.text+L"First line\r\nДругий рядок","commit adds multiline text");
        ks::beginInlineText(window,c,c.marks[0],0);
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L"Cancelled");
        SendMessageW(window,ks::FinishTextMessage,2,(LPARAM)c.inlineText);
        require(c.marks[0].text!=L"Cancelled","Escape cancels changes");
        SendMessageW(window,WM_KEYDOWN,VK_F2,0);
        require(c.inlineText!=nullptr,"F2 edits inline");
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L"Edited"); ks::finishInlineText(window,c,true);
        require(c.marks[0].text==L"Edited","existing text edit commits");
        SendMessageW(window,WM_COMMAND,12,0);
        require(c.marks[0].text!=L"Edited","undo restores original text");
        SendMessageW(window,WM_COMMAND,18,0);
        require(c.marks[0].text==L"Edited","redo restores text edit");
        ks::beginInlineText(window,c,c.marks[0],0);
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L""); ks::finishInlineText(window,c,true);
        require(c.marks.empty(),"committing empty text deletes object");
        c.marks.push_back({{30,150},{260,150},0}); c.selected=0;
        SendMessageW(window,WM_COMMAND,35,0);
        require(c.inlineText && c.editingLabel,"label button opens inline editor");
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L"Arrow caption");
        ks::finishInlineText(window,c,true);
        require(c.marks.size()==1 && c.marks[0].label==L"Arrow caption" && c.marks[0].isLine(),"label attaches to arrow");
        SendMessageW(window,WM_KEYDOWN,VK_F2,0);
        require(c.inlineText && c.editingLabel,"F2 edits arrow caption");
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L""); ks::finishInlineText(window,c,true);
        require(c.marks.size()==1 && c.marks[0].label.empty(),"empty label removes caption without deleting arrow");
        SendMessageW(window,WM_COMMAND,12,0);
        require(c.marks[0].label==L"Arrow caption","undo restores arrow caption");
        auto caption=ks::screenshotArrowLabel(c.marks[0]);
        auto captionGrip=ks::screenshotTextRotationHandle(caption,double(c.unit*0.6)*c.image->width/(c.view.right-c.view.left));
        c.selected=0;
        require(ks::markAt(c,captionGrip).second==ks::MarkPart::Rotation,"caption rotation handle is interactive");
        c.marks[0]=ks::dragScreenshotMark(c.marks[0],ks::MarkPart::Rotation,captionGrip,{captionGrip.x+40,captionGrip.y+20},320,240,true);
        auto angle=c.marks[0].rotation;
        SendMessageW(window,WM_KEYDOWN,VK_F2,0);
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L"Rotated caption"); ks::finishInlineText(window,c,true);
        require(c.marks[0].rotation==angle && c.marks[0].label==L"Rotated caption","editing caption preserves its rotation");
        auto rotating=text; rotating.text=L"Rotate"; c.marks.push_back(rotating); c.selected=1;
        auto handle=ks::screenshotTextRotationHandle(rotating,double(c.unit*0.6)*c.image->width/(c.view.right-c.view.left));
        require(ks::markAt(c,handle).second==ks::MarkPart::Rotation,"rotation handle is interactive");
        c.hoveredPart=ks::MarkPart::Rotation; ks::updateStatus(c);
        require(c.statusText.find(L"15-degree")!=std::wstring::npos,"rotation hint explains Shift snapping");
        c.hoveredPart=ks::MarkPart::None;
        std::vector<ks::Mark> nudgeMarks;
        nudgeMarks.push_back({{60,60},{60,60},1});
        nudgeMarks.push_back({{60,60},{120,100},0});
        auto nudgeText=text; nudgeText.text=L"Move"; nudgeText.from=nudgeText.to={60,60}; nudgeMarks.push_back(nudgeText);
        for(auto shape:{ks::ScreenshotShape::Rectangle,ks::ScreenshotShape::Circle,ks::ScreenshotShape::Ellipse}) {
            ks::Mark mark{{60,60},{100,100},0}; mark.shape=shape; nudgeMarks.push_back(mark);
        }
        for(bool freehand:{false,true}) {
            ks::Mark mark{{60,60},{120,100},0}; mark.points={{60,60},{90,80},{120,100}}; mark.freehand=freehand;
            nudgeMarks.push_back(mark);
        }
        for(auto mark:nudgeMarks) {
            c.marks={mark}; c.selected=0; c.selectedLabel=false;
            SendMessageW(window,WM_KEYDOWN,VK_RIGHT,0); SendMessageW(window,WM_KEYDOWN,VK_DOWN,0);
            require(c.marks[0].from.x==61 && c.marks[0].from.y==61,"every object nudges one pixel per key");
            if(!mark.points.empty()) require(c.marks[0].points[1].x==91 && c.marks[0].points[1].y==81,"nudge moves entire stroke");
            SendMessageW(window,WM_KEYDOWN,VK_LEFT,0); SendMessageW(window,WM_KEYDOWN,VK_UP,0);
            require(c.marks[0].from.x==60 && c.marks[0].from.y==60,"opposite keys restore original position");
        }
        ks::Mark nudgeArrow{{60,60},{140,140},0}; nudgeArrow.label=L"Caption"; nudgeArrow.fontSize=12;
        c.marks={nudgeArrow}; c.selected=0; c.selectedLabel=true;
        auto beforeNudge=ks::screenshotTextBounds(ks::screenshotArrowLabel(c.marks[0]));
        for(int i=0;i<5;++i) SendMessageW(window,WM_KEYDOWN,VK_RIGHT,0);
        auto afterNudge=ks::screenshotTextBounds(ks::screenshotArrowLabel(c.marks[0]));
        require(afterNudge.left==beforeNudge.left+5 && afterNudge.top==beforeNudge.top,
                "caption nudges exact screen pixels at a diagonal angle");
        require(c.marks[0].from.x==60 && !c.marks[0].labelRotationManual,"caption nudge leaves arrow and automatic angle intact");
        SendMessageW(window,WM_COMMAND,12,0);
        require(ks::screenshotTextBounds(ks::screenshotArrowLabel(c.marks[0])).left==beforeNudge.left+4,"undo reverses one nudge");
        SendMessageW(window,WM_COMMAND,18,0);
        require(ks::screenshotTextBounds(ks::screenshotArrowLabel(c.marks[0])).left==beforeNudge.left+5,"redo restores one nudge");
        SetWindowPos(window,nullptr,80,60,720,500,SWP_NOZORDER|SWP_SHOWWINDOW);
        SetPropW(window,L"ConfirmationCentered",nullptr);
        SetTimer(window,987,10,[](HWND owner,UINT,UINT_PTR id,DWORD) {
            EnumThreadWindows(GetCurrentThreadId(),[](HWND popup,LPARAM parent)->BOOL {
                wchar_t className[64]{}; GetClassNameW(popup,className,64);
                if(GetWindow(popup,GW_OWNER)==(HWND)parent && std::wstring(className)==L"#32770") {
                    RECT ownerRect{},popupRect{};
                    GetWindowRect((HWND)parent,&ownerRect); GetWindowRect(popup,&popupRect);
                    if(std::abs(ownerRect.left+ownerRect.right-popupRect.left-popupRect.right)<=4 &&
                       std::abs(ownerRect.top+ownerRect.bottom-popupRect.top-popupRect.bottom)<=4)
                        SetPropW((HWND)parent,L"ConfirmationCentered",(HANDLE)1);
                    PostMessageW(popup,TDM_CLICK_BUTTON,IDNO,0);
                }
                return TRUE;
            },(LPARAM)owner);
            KillTimer(owner,id);
        });
        SendMessageW(window,WM_CLOSE,0,0);
        require(IsWindow(window),"declining close confirmation keeps the screenshot open");
        require(GetPropW(window,L"ConfirmationCentered")!=nullptr,"confirmation is centered on editor instead of screen");
        RemovePropW(window,L"ConfirmationCentered");
        c.copied=true;
        SendMessageW(window,WM_KEYDOWN,VK_ESCAPE,0);
        require(IsWindow(window),"Escape does not close the screenshot editor");
        SendMessageW(window,WM_CLOSE,0,0);
        require(!IsWindow(window),"copied screenshot closes without confirmation");
        DestroyWindow(app.window); app.window=nullptr;
        std::filesystem::remove_all(temp);
        std::cout<<"Passed screenshot editor UI integration checks\n";
    } catch(const std::exception &e) { std::cerr<<e.what()<<'\n'; return 1; }
 }
@@ -428,6 +428,16 @@ int main(int argc, char **argv)
        require(!ks::loadSettings(temp / L"defaults.json", {}).elevatedAutostart,
                "elevated autostart is opt-in for existing and default settings");
        auto invalid = settings;
        auto captureSettings = settings;
        captureSettings.screenshot = L"Ctrl+Shift+F9";
        require(ks::decodeSettings(ks::encodeSettings(captureSettings), {}).screenshot == captureSettings.screenshot,
                "screen capture shortcut roundtrip");
        captureSettings.screenshot = captureSettings.clipboard;
        rejects([&] { ks::validateSettings(captureSettings); }, "screen capture shortcut duplicates rejected");
        captureSettings.screenshot.clear();
        ks::validateSettings(captureSettings);
        require(ks::loadSettings(temp / L"defaults.json", {}).screenshot == L"Win+Shift+S",
                "screen capture default for existing settings");
        invalid.undo = invalid.toggle;
        rejects([&] { ks::validateSettings(invalid); }, "duplicate shortcut rejected");
        invalid = settings;
@@ -0,0 +1,42 @@
 """Development only: pip install resvg-py==0.5.0 Pillow.
 Render the pinned Lucide SVG originals into embedded, multi-resolution Windows icons.
 """
 from pathlib import Path
 from io import BytesIO
 from PIL import Image
 import resvg_py
 import re
 import struct
 root = Path(__file__).resolve().parents[1] / 'resources' / 'icons' / 'lucide'
 names = ['circle-dot', 'arrow-up-right', 'undo-2', 'copy', 'x', 'redo-2', 'highlighter', 'palette', 'pencil', 'slash', 'square', 'circle', 'ellipse', 'type', 'a-large-small']
 for name in names:
    svg = (root / f'{name}.svg').read_text(encoding='utf-8')
    for variant, color in [('normal', '#334155'), ('active', '#2563eb'), ('disabled', '#94a3b8')]:
        png = resvg_py.svg_to_bytes(svg_string=svg.replace('currentColor', color), width=256, height=256)
        im = Image.open(BytesIO(png)).convert('RGBA')
        im.save(root / f'{name}-{variant}.ico', sizes=[(s, s) for s in (16,20,22,24,28,32,40,44,48,56,64,96,128,256)])
 # Small local visual QA sheet of the actual downloaded paths.
 preview = Image.new('RGB', (len(names)*60, 72), '#f8fafc')
 for i, name in enumerate(names):
    icon = Image.open(root / f'{name}-normal.ico').convert('RGBA').resize((32,32),Image.Resampling.LANCZOS)
    preview.paste(icon,(14+i*60,20),icon)
 preview.save(root / 'preview.png')
 # Cursor uses the same Lucide pencil, with a white outline for dark screenshots.
 paths = '\n'.join(re.findall(r'<path\b[^>]+/>', (root / 'pencil.svg').read_text(encoding='utf-8')))
 cursor_svg = f'''<svg xmlns="http://www.w3.org/2000/svg" viewBox="-2 -2 28 28" fill="none" stroke-linecap="round" stroke-linejoin="round">
 <g stroke="white" stroke-width="4">{paths}</g><g stroke="#334155" stroke-width="2">{paths}</g></svg>'''
 cursor_png = resvg_py.svg_to_bytes(svg_string=cursor_svg, width=256, height=256)
 cursor_image = Image.open(BytesIO(cursor_png)).convert('RGBA')
 buffer = BytesIO()
 cursor_image.save(buffer, format='ICO', bitmap_format='bmp', sizes=[(s,s) for s in (32,48,64,96)])
 cursor = bytearray(buffer.getvalue())
 struct.pack_into('<H', cursor, 2, 2)  # CUR instead of ICO
 for index in range(struct.unpack_from('<H', cursor, 4)[0]):
    entry = 6 + index * 16
    size = cursor[entry] or 256
    # Drawing point is the tip of the pencil, not the center of its image.
    struct.pack_into('<HH', cursor, entry+4, round(size*4/28), round(size*24/28))
 (root / 'pencil.cur').write_bytes(cursor)
@@ -10,6 +10,12 @@ try {
    foreach ($process in $config) { if (-not $process.WaitForExit(10000)) { throw 'Close the configurator before updating.' } }
    Copy-Item -LiteralPath (Join-Path $root 'build\staged\KSwitcher.Config.exe') -Destination (Join-Path $root 'build\KSwitcher.Config.exe') -Force
    Copy-Item -LiteralPath (Join-Path $root 'build\staged\KSwitcher.exe') -Destination $exe -Force
-    Start-Process -FilePath $exe -WindowStyle Hidden
+    $eventName = 'Local\KSwitcher.Update.Started.' + [guid]::NewGuid().ToString('N')
    $started = [System.Threading.EventWaitHandle]::new($false, [System.Threading.EventResetMode]::ManualReset, $eventName)
    try {
        $newProcess = Start-Process -FilePath $exe -ArgumentList "--update-ready-event=$eventName" -WorkingDirectory (Split-Path $exe) -WindowStyle Hidden -PassThru
        if (-not $started.WaitOne(10000)) { throw 'KSwitcher did not confirm startup within 10 seconds.' }
        if ($newProcess.WaitForExit(1000)) { throw "KSwitcher exited after startup (code $($newProcess.ExitCode))." }
    } finally { $started.Dispose() }
    'OK' | Set-Content -LiteralPath (Join-Path $root 'build\update-result.txt')
 } catch { $_.Exception.Message | Set-Content -LiteralPath (Join-Path $root 'build\update-result.txt'); exit 1 }
`@@ -1 +1 @@`
	`104c79b64bb30a2161e3ec2f5108a731da0d274e015d53d8835ea7e64f431ee1 KSwitcher-win-x64.zip`	`c2ad230f9946fddcf6faf17378814cba474c104fa155f63cd1a9ac61fc489ee7 KSwitcher-win-x64.zip`