Occurs when the user performs interactive change of the current scale factor using the mouse.
Syntax
Example
This sample lets you drag the mouse to scale an image.
Also, it displays the contents of the InterativeScale event in the console
Visual Basic | Copy Code |
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Private Sub viewer_InteractiveScale(ByVal sender As Object, ByVal e As RasterViewerLineEventArgs)
Dim viewer As RasterImageViewer = CType(IIf(TypeOf sender Is RasterImageViewer, sender, Nothing), RasterImageViewer)
If e.Status = RasterViewerInteractiveStatus.Begin Then
viewer.Cursor = Cursors.SizeAll
ElseIf e.Status = RasterViewerInteractiveStatus.End Then
viewer.Cursor = Cursors.Default
End If
Console.WriteLine("InteractiveScale: e.Begin {0}, e.End{1}, e.Status {2}, e.Cancel {3}", e.Begin, e.End, e.Status, e.Cancel)
End Sub
Public Sub RasterImageViewer_InteractiveScale(ByVal viewer As RasterImageViewer)
viewer.InteractiveMode = RasterViewerInteractiveMode.Scale
AddHandler viewer.InteractiveScale, AddressOf viewer_InteractiveScale
End Sub |
C# | Copy Code |
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private void viewer_InteractiveScale(object sender, RasterViewerLineEventArgs e) { RasterImageViewer viewer = sender as RasterImageViewer; if (e.Status == RasterViewerInteractiveStatus.Begin) viewer.Cursor = Cursors.SizeAll; else if (e.Status == RasterViewerInteractiveStatus.End) viewer.Cursor = Cursors.Default; Console.WriteLine("InteractiveScale: e.Begin {0}, e.End{1}, e.Status {2}, e.Cancel {3}", e.Begin, e.End, e.Status, e.Cancel); } public void RasterImageViewer_InteractiveScale(RasterImageViewer viewer) { viewer.InteractiveMode = RasterViewerInteractiveMode.Scale; viewer.InteractiveScale += new EventHandler<RasterViewerLineEventArgs>(viewer_InteractiveScale); // Drag mouse across image to scale the image // After you are done, you must remove the event handler as in below // // viewer.InteractiveScale -= new EventHandler<RasterViewerLineEventArgs>(viewer_InteractiveScale); } |
Remarks
Requirements
Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
See Also