Fixed bug 3550 - No mouse move messages send while over the titlebar and windows edges

Matthew

Its possible to set SDL_CaptureMouse() so you continue receiving mouse input while the mouse is outside your window. This works however There is then a gap where no messages send, which is when the mouse is hovering the title bar and the window edges.

src/video/windows/SDL_windowsevents.c

@@ -524,9 +524,14 @@ WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
                 } else if (isCapture) {
                     /* we check for where Windows thinks the system cursor lives in this case, so we don't really lose mouse accel, etc. */
                     POINT pt;
+                    RECT hwndRect;
                     GetCursorPos(&pt);
-                    if (WindowFromPoint(pt) != hwnd) {  /* if in the window, WM_MOUSEMOVE, etc, will cover it. */
-                        ScreenToClient(hwnd, &pt);
+                    HWND currentHnd = WindowFromPoint( pt );
+                    ScreenToClient( hwnd, &pt );
+                    GetClientRect( hwnd, &hwndRect );
+
+                    /* if in the window, WM_MOUSEMOVE, etc, will cover it. */
+                    if( currentHnd != hwnd || pt.x < 0 || pt.y < 0 || pt.x > hwndRect.right || pt.y > hwndRect.right ) {
                         SDL_SendMouseMotion(data->window, 0, 0, (int) pt.x, (int) pt.y);
                         SDL_SendMouseButton(data->window, 0, GetAsyncKeyState(VK_LBUTTON) & 0x8000 ? SDL_PRESSED : SDL_RELEASED, SDL_BUTTON_LEFT);
                         SDL_SendMouseButton(data->window, 0, GetAsyncKeyState(VK_RBUTTON) & 0x8000 ? SDL_PRESSED : SDL_RELEASED, SDL_BUTTON_RIGHT);