Widget.addOnVisibilityNotify

gtk Widget Widget

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

To receive this signal the gdk.Window associated to the widget needs to enable the GDK_VISIBILITY_NOTIFY_MASK mask.

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

Return Value

Type: gulong

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

Detailed Description

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.

gtk Widget Widget constructorsfunctionsstatic functionsvariables
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