Widget.addOnVisibilityNotify

The ::visibility-notify-event will be emitted when the @widget's window is obscured or unobscured.

To receive this signal the #GdkWindow associated to the widget needs to enable the #GDK_VISIBILITY_NOTIFY_MASK mask.

gulong addOnVisibilityNotify(bool delegate(GdkEventVisibility*, Widget) dlg, ConnectFlags connectFlags)
class Widget
gulong
addOnVisibilityNotify
(
bool delegate
(
GdkEventVisibility*
,
Widget
)
dlg
,
ConnectFlags connectFlags = cast(ConnectFlags)0
)
gulong addOnVisibilityNotify(bool delegate(Event, Widget) dlg, ConnectFlags connectFlags)

Return Value

%TRUE to stop other handlers from being invoked for the event. %FALSE to propagate the event further.

Deprecated: Modern composited windowing systems with pervasive transparency make it impossible to track the visibility of a window reliably, so this signal can not be guaranteed to provide useful information.

Widget.addOnVisibilityNotify

Return Value

Detailed Description

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