The ::leave-notify-event will be emitted when the pointer leaves the @widget's window.
To receive this signal, the #GdkWindow associated to the widget needs to enable the #GDK_LEAVE_NOTIFY_MASK mask.
This signal will be sent to the grab widget if there is one.
See Implementation
The ::leave-notify-event will be emitted when the pointer leaves the @widget's window.
To receive this signal, the #GdkWindow associated to the widget needs to enable the #GDK_LEAVE_NOTIFY_MASK mask.
This signal will be sent to the grab widget if there is one.