@GDK_INPUT_OUTPUT windows are the standard kind of window you might expect.
Such windows receive events and are also displayed on screen.
@GDK_INPUT_ONLY windows are invisible; they are usually placed above other
windows in order to trap or filter the events. You can’t draw on
@GDK_INPUT_ONLY windows.
@GDK_INPUT_OUTPUT windows are the standard kind of window you might expect. Such windows receive events and are also displayed on screen. @GDK_INPUT_ONLY windows are invisible; they are usually placed above other windows in order to trap or filter the events. You can’t draw on @GDK_INPUT_ONLY windows.