The ::button-release-event signal will be emitted when a button
(typically from a mouse) is released.
To receive this signal, the GdkWindow associated to the
widget needs to enable the GDK_BUTTON_RELEASE_MASK mask.
This signal will be sent to the grab widget if there is one.
The ::button-release-event signal will be emitted when a button (typically from a mouse) is released. To receive this signal, the GdkWindow associated to the widget needs to enable the GDK_BUTTON_RELEASE_MASK mask. This signal will be sent to the grab widget if there is one.