On Handle Destroyed(EventArgs) Method
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Raises the HandleDestroyed event.
protected: override void OnHandleDestroyed(EventArgs ^ e);
protected override void OnHandleDestroyed (EventArgs e);
override this.OnHandleDestroyed : EventArgs -> unit
Protected Overrides Sub OnHandleDestroyed (e As EventArgs)
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnHandleDestroyed 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.