the crossing mode (%GDK_CROSSING_NORMAL, %GDK_CROSSING_GRAB,
%GDK_CROSSING_UNGRAB, %GDK_CROSSING_GTK_GRAB, %GDK_CROSSING_GTK_UNGRAB or
%GDK_CROSSING_STATE_CHANGED). %GDK_CROSSING_GTK_GRAB, %GDK_CROSSING_GTK_UNGRAB,
and %GDK_CROSSING_STATE_CHANGED were added in 2.14 and are always synthesized,
never native.
the crossing mode (%GDK_CROSSING_NORMAL, %GDK_CROSSING_GRAB, %GDK_CROSSING_UNGRAB, %GDK_CROSSING_GTK_GRAB, %GDK_CROSSING_GTK_UNGRAB or %GDK_CROSSING_STATE_CHANGED). %GDK_CROSSING_GTK_GRAB, %GDK_CROSSING_GTK_UNGRAB, and %GDK_CROSSING_STATE_CHANGED were added in 2.14 and are always synthesized, never native.