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WorkflowDesignerMessageFilter.OnMouseWheel Method

Occurs when the mouse wheel moves.

Namespace:  System.Workflow.ComponentModel.Design
Assembly:  System.Workflow.ComponentModel (in System.Workflow.ComponentModel.dll)

protected virtual bool OnMouseWheel(
	MouseEventArgs eventArgs


Type: System.Windows.Forms.MouseEventArgs

A MouseEventArgs that contains information about the event.

Return Value

Type: System.Boolean
true if the message is handled; otherwise, false.

OnMouseWheel occurs when the mouse wheel moves.

The following code example shows how to override the OnMouseWheel method to zoom the WorkflowView object based on the Delta property of the MouseEventArgs and to return false so that other components in the designer architecture can process the method.

protected override bool OnMouseWheel(MouseEventArgs eventArgs)
    mouseDown = false;
    return true;

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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