I think all is OK as long as those "overflow" events are delivered only to Pen. We already have history flag, do not we?

I am just afraid that doing that for all MouseMoves could overhelm some widgets that do not account for this....

Mirek

gtk_widget_set_events(top->window, GDK_ALL_EVENTS_MASK & ~GDK_POINTER_MOTION_HINT_MASK);

gdk_window_set_event_compression(((GdkEventButton *)event)->window, false);