Informs GTK+ on which monitor a menu should be popped up.
See gdk_screen_get_monitor_geometry().
This function should be called from a GtkMenuPositionFunc if the
menu should not appear on the same monitor as the pointer. This
information can't be reliably inferred from the coordinates returned
by a GtkMenuPositionFunc, since, for very long menus, these coordinates
may extend beyond the monitor boundaries or even the screen boundaries.
Since 2.4
Informs GTK+ on which monitor a menu should be popped up. See gdk_screen_get_monitor_geometry(). This function should be called from a GtkMenuPositionFunc if the menu should not appear on the same monitor as the pointer. This information can't be reliably inferred from the coordinates returned by a GtkMenuPositionFunc, since, for very long menus, these coordinates may extend beyond the monitor boundaries or even the screen boundaries. Since 2.4