ToolStripDropDown.OnVisibleChanged(EventArgs) Method
Definition
Important
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Raises the VisibleChanged event.
protected:
override void OnVisibleChanged(EventArgs ^ e);protected override void OnVisibleChanged (EventArgs e);override this.OnVisibleChanged : EventArgs -> unitProtected Overrides Sub OnVisibleChanged (e As EventArgs)Parameters
Remarks
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnVisibleChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors
When overriding OnVisibleChanged(EventArgs) in a derived class, be sure to call the base class's OnVisibleChanged(EventArgs) method so that registered delegates receive the event.
Applies to
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