# CLR Events

[RadControl](https://www.telerik.com/products/winforms/documentation/telerik-presentation-framework/class-hierarchy/radcontrol) inherits from the standard **Windows Forms ScrollableControl**,  and so has access to the principal mouse, keyboard, font, sizing, layout and painting events. These events are captured and passed to the element tree where appropriate. For example, the **OnMouseEnter** event inherited from **ScrollableControl** first notifies the **RootElement** that the mouse is over the control, then invokes the standard **OnMouseEnter** behavior from **ScrollableControl**.

#### OnMouseEnter

 

 

```C#
protected override void OnMouseEnter(EventArgs e)
{
    if (!DisableMouseEvents)
    {
        this.RootElement.IsMouseOver = true;
        this.RootElement.IsMouseOverElement = true;
    }
    base.OnMouseEnter(e);
}

```

```VB.NET
Protected Overrides Sub OnMouseEnter(ByVal e As EventArgs)
    If Not DisableMouseEvents Then
        Me.RootElement.IsMouseOver = True
        Me.RootElement.IsMouseOverElement = True
    End If
    MyBase.OnMouseEnter(e)       
End Sub

```



## See Also

* [Routed Events](https://www.telerik.com/products/winforms/documentation/telerik-presentation-framework/events/routed-events)