InkCollectorMouseWheelEventHandler Delegate

Článek
10/19/2012

Represents the method that handles the MouseWheel event of an InkCollector object.

Namespace: Microsoft.Ink
Assembly: Microsoft.Ink (in Microsoft.Ink.dll)

Syntax

'Declaration
Public Delegate Sub InkCollectorMouseWheelEventHandler ( _
    sender As Object, _
    e As CancelMouseEventArgs _
)
'Usage
Dim instance As New InkCollectorMouseWheelEventHandler(AddressOf HandlerMethod)

public delegate void InkCollectorMouseWheelEventHandler(
    Object sender,
    CancelMouseEventArgs e
)

public delegate void InkCollectorMouseWheelEventHandler(
    Object^ sender, 
    CancelMouseEventArgs^ e
)

JScript does not support delegates.

Parameters

sender
Type: System.Object

The source InkCollector object of this event.

e
Type: Microsoft.Ink.CancelMouseEventArgs

The CancelMouseEventArgs object that contains the event data.

Remarks

When you create an InkCollectorMouseWheelEventHandler delegate, you identify the method that handles the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For performance reasons, the default event interest is off but is turned on automatically in managed code if you add an event handler.

Examples

In this example, when the MouseWheel event fires, all strokes are scrolled according to the mouse wheel rotation amount and direction.

Private Sub mInkObject_MouseWheel(ByVal sender As Object, ByVal e As CancelMouseEventArgs)
    Using S As Strokes = mInkObject.Ink.Strokes
        If (S.Count > 0) Then
            S.Move(0, e.Delta)
            panelInkCanvas.Invalidate()
        End If 
    End Using 
End Sub

private void mInkObject_MouseWheel(object sender, CancelMouseEventArgs e)
{
    using (Strokes S = mInkObject.Ink.Strokes)
    {
        if (S.Count > 0)
        {
            S.Move(0, e.Delta);
            panelInkCanvas.Invalidate();
        }
    }
}

Platforms

Windows 7, Windows Vista, Windows Server 2008 R2, Windows Server 2008

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

Version Information

.NET Framework

Supported in: 3.0

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