[WIN32K]

When destroying a window, generate a mouse move message, so that the underlying window is notified about the mouse position and can update the pointer if neccessary. Fixes bug #4499 and bug #3893

See issue #4499 for more details.

svn path=/trunk/; revision=47339

reactos/subsystems/win32/win32k/ntuser/window.c

@@ -2674,6 +2674,7 @@ BOOLEAN FASTCALL co_UserDestroyWindow(PWINDOW_OBJECT Window)
    PWND Wnd;
    HWND hWnd;
    PTHREADINFO ti;
+   MSG msg;
 
    ASSERT_REFS_CO(Window); // FIXME: temp hack?
 
@@ -2811,6 +2812,13 @@ BOOLEAN FASTCALL co_UserDestroyWindow(PWINDOW_OBJECT Window)
       }
    }
 
+    /* Generate mouse move message for the next window */
+    msg.message = WM_MOUSEMOVE;
+    msg.wParam = IntGetSysCursorInfo()->ButtonsDown;
+    msg.lParam = MAKELPARAM(gpsi->ptCursor.x, gpsi->ptCursor.y);
+    msg.pt = gpsi->ptCursor;
+    MsqInsertSystemMessage(&msg);
+
    if (!IntIsWindow(Window->hSelf))
    {
       return TRUE;