ScrollBar.OnMouseWheel(MouseEventArgs) Method

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Important

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Raises the MouseWheel event.

protected:
 override void OnMouseWheel(System::Windows::Forms::MouseEventArgs ^ e);

protected override void OnMouseWheel (System.Windows.Forms.MouseEventArgs e);

override this.OnMouseWheel : System.Windows.Forms.MouseEventArgs -> unit

Protected Overrides Sub OnMouseWheel (e As MouseEventArgs)

Parameters

e: MouseEventArgs

A MouseEventArgs.

Remarks

The ScrollBar control will convert mouse wheel movements to scrolling when the ScrollBar is in focus.

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

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

Applies to