ToolStripItem.OnMouseLeave(EventArgs) Method

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Raises the MouseLeave event.

protected:
 virtual void OnMouseLeave(EventArgs ^ e);

protected virtual void OnMouseLeave (EventArgs e);

abstract member OnMouseLeave : EventArgs -> unit
override this.OnMouseLeave : EventArgs -> unit

Protected Overridable Sub OnMouseLeave (e As EventArgs)

Parameters

e: EventArgs

An EventArgs that contains the event data.

Examples

The following code example demonstrates how to override the OnMouseLeave method. This code example is part of a larger example provided for the ToolStripItem class.

// This method defines the behavior of the MouseLeave event.
// It sets the state of the rolloverValue field to false and
// tells the control to repaint.
protected override void OnMouseLeave(EventArgs e)
{
    base.OnMouseLeave(e);

    this.rolloverValue = false;

    this.Invalidate();
}

' This method defines the behavior of the MouseLeave event.
' It sets the state of the rolloverValue field to false and
' tells the control to repaint.
Protected Overrides Sub OnMouseLeave(e As EventArgs)
   MyBase.OnMouseLeave(e)
   
   Me.rolloverValue = False
   
   Me.Invalidate()
 End Sub

Remarks

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

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

Applies to

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