Gtk.Widget::damage-event

function callback(widget, event:Gdk.EventExpose, ):Boolean;

Emitted when a redirected window belonging to @widget gets drawn into. The region/area members of the event shows what area of the redirected drawable was drawn into.

Since 2.14

widget

instance of Gtk.Widget that is emitting the signal

event

the Gdk.EventExpose event

Returns

true to stop other handlers from being invoked for the event. false to propagate the event further.