+ replace Q_WS_WIN with Q_OS_WIN + replace Q_WS_X11 with Q_OS_LINUX + replace Q_WS_MACX with Q_OS_MACX + set explicit cast to HWND
+ replace Q_WS_WIN with Q_OS_WIN + replace Q_WS_X11 with Q_OS_LINUX + replace Q_WS_MACX with Q_OS_MACX + set explicit cast to HWND