Release v0.2.1: support remote input, safe updates and high-DPI windows

src/platform.cpp

@@ -347,15 +347,30 @@ size_t Clip::size() const
         n += f.data.size();
     return n;
 }
+ULONG_PTR inputMarker()
+{
+    static const char marker{};
+    return reinterpret_cast<ULONG_PTR>(&marker);
+}
+bool ownKeyboardInput(const KBDLLHOOKSTRUCT &key)
+{
+    return (key.flags & LLKHF_INJECTED) && key.dwExtraInfo == inputMarker();
+}
+INPUT keyboardInput(WORD key, DWORD flags)
+{
+    INPUT input{};
+    input.type = INPUT_KEYBOARD;
+    input.ki.wVk = key;
+    input.ki.dwFlags = flags;
+    input.ki.dwExtraInfo = inputMarker();
+    return input;
+}
 bool chord(WORD key, UINT mods)
 {
     std::vector<INPUT> inputs;
     auto add = [&](WORD k, bool up)
     {
-        INPUT i{};
-        i.type = INPUT_KEYBOARD;
-        i.ki.wVk = k;
-        i.ki.dwFlags = up ? KEYEVENTF_KEYUP : 0;
+        INPUT i = keyboardInput(k, up ? KEYEVENTF_KEYUP : 0);
         if (k == VK_LEFT || k == VK_RIGHT || k == VK_INSERT)
             i.ki.dwFlags |= KEYEVENTF_EXTENDEDKEY;
         inputs.push_back(i);
@@ -406,10 +421,7 @@ bool selectPrevious(size_t count, const std::function<bool()> &valid)
         std::vector<INPUT> inputs;
         auto add = [&](WORD key, DWORD flags)
         {
-            INPUT i{};
-            i.type = INPUT_KEYBOARD;
-            i.ki.wVk = key;
-            i.ki.dwFlags = flags;
+            INPUT i = keyboardInput(key, flags);
             inputs.push_back(i);
         };
         add(VK_SHIFT, 0);
@@ -437,10 +449,7 @@ void releaseModifiers()
     for (int k : {VK_LCONTROL, VK_RCONTROL, VK_LMENU, VK_RMENU, VK_LSHIFT, VK_RSHIFT, VK_LWIN, VK_RWIN})
         if (GetAsyncKeyState(k) & 0x8000)
         {
-            INPUT i{};
-            i.type = INPUT_KEYBOARD;
-            i.ki.wVk = (WORD)k;
-            i.ki.dwFlags = KEYEVENTF_KEYUP;
+            INPUT i = keyboardInput((WORD)k, KEYEVENTF_KEYUP);
             inputs.push_back(i);
         }
     if (!inputs.empty())