This is an event signal, fired when the connected widget picks up a GDK_BUTTON_RELEASE event. Button release events are generated by any of the mouse buttons being released. You can distinguish between the mouse buttons in the callback by using $event->button.

See also: "button-press-event", "event", "key-press-event".

Callback function

bool callback(GtkWidget widget, GdkEvent button_release);

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