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TreeView.OnMouseHover(EventArgs) Method

Definition

Raises the MouseHover event.

protected:
 override void OnMouseHover(EventArgs ^ e);
protected override void OnMouseHover (EventArgs e);
override this.OnMouseHover : EventArgs -> unit
Protected Overrides Sub OnMouseHover (e As EventArgs)

Parameters

e
EventArgs

An EventArgs that contains the event data.

Remarks

The OnMouseHover method performs a hit test to see whether the mouse is located over a TreeNode, and if it is, raises the NodeMouseHover event.

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.

The OnMouseHover 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 OnMouseHover(EventArgs) in a derived class, be sure to call the base class's OnMouseHover(EventArgs) method so that registered delegates receive the event.

Applies to