Checks all open displays for a #GdkEvent to process,to be processed
on, fetching events from the windowing system if necessary.
See gdk_display_get_event().
Return: the next #GdkEvent to be processed, or %NULL
if no events are pending. The returned #GdkEvent should be freed
with gdk_event_free().
Checks all open displays for a #GdkEvent to process,to be processed on, fetching events from the windowing system if necessary. See gdk_display_get_event().
Return: the next #GdkEvent to be processed, or %NULL if no events are pending. The returned #GdkEvent should be freed with gdk_event_free().