Assembly: PresentationCore (in PresentationCore.dll)
This delegate is used with the following attached events.
This delegate is used with the following routed events. These routed events forward the previously listed attached events to make them more accessible to the general element model in WPF.
The attached events and the base element routed events share their event data, and the bubbling and tunneling versions of the routed events also share event data. This can affect the handled characteristics of the event as it travels the event route. For details, see Input Overview.
The Delta property is positive if the mouse wheel is moved forward (away from the user) or negative if the mouse wheel is moved downward (toward the user).
' Moves the TextBox named box when the mouse wheel is rotated. ' The TextBox is on a Canvas named MainCanvas. Private Sub MouseWheelHandler(ByVal sender As Object, ByVal e As MouseWheelEventArgs) ' If the mouse wheel delta is positive, move the box up. If e.Delta > 0 Then If Canvas.GetTop(box) >= 1 Then Canvas.SetTop(box, Canvas.GetTop(box) - 1) End If End If ' If the mouse wheel delta is negative, move the box down. If e.Delta < 0 Then If (Canvas.GetTop(box) + box.Height) <= MainCanvas.Height Then Canvas.SetTop(box, Canvas.GetTop(box) + 1) End If End If End Sub