The ::focus-out-event signal will be emitted when the keyboard focus leaves the @widget's window.
To receive this signal, the #GdkWindow associated to the widget needs to enable the #GDK_FOCUS_CHANGE_MASK mask.
See Implementation
The ::focus-out-event signal will be emitted when the keyboard focus leaves the @widget's window.
To receive this signal, the #GdkWindow associated to the widget needs to enable the #GDK_FOCUS_CHANGE_MASK mask.