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InteractiveRegionFreehand Event
See Also  Example
Leadtools.WinForms Namespace > RasterImageViewer Class : InteractiveRegionFreehand Event



Occurs when the user performs interactive creation of a freehand region for the image.

Syntax

Visual Basic (Declaration) 
Public Event InteractiveRegionFreehand() As EventHandler(Of RasterViewerPointsEventArgs)
Visual Basic (Usage)Copy Code
Dim instance As RasterImageViewer
Dim handler As EventHandler(Of RasterViewerPointsEventArgs)
 
AddHandler instance.InteractiveRegionFreehand, handler
C# 
public event EventHandler<RasterViewerPointsEventArgs> InteractiveRegionFreehand()
C++/CLI 
public:
event EventHandler<RasterViewerPointsEventArgs>^ InteractiveRegionFreehand();

Example

This sample lets you draw a freehand region with the mouse Also, it displays the contents of the InteractiveRegionFreehand event in the console

Visual BasicCopy Code
Private Sub viewer_InteractiveRegionFreehand(ByVal sender As Object, ByVal e As RasterViewerPointsEventArgs)
    Console.WriteLine("InteractiveRegionFreehand: PointCount {0} e.Status {1}, e.Cancel {2}", e.Points.Count, e.Status, e.Cancel)
End Sub
Public Sub RasterImageViewer_InteractiveRegionFreehand(ByVal viewer As RasterImageViewer)
    viewer.InteractiveMode = RasterViewerInteractiveMode.Region
    viewer.InteractiveRegionType = RasterViewerInteractiveRegionType.Freehand
    AddHandler viewer.InteractiveRegionFreehand, AddressOf viewer_InteractiveRegionFreehand

    ' Draw the mouse on image to draw an elliptical region
    ' After you are done, you must remove the event handler as in below
    '
    ' viewer.InteractiveRegionFreehand -= new EventHandler<RasterViewerPointsEventArgs>(viewer_InteractiveRegionFreehand);
End Sub
C#Copy Code
private void viewer_InteractiveRegionFreehand(object sender, RasterViewerPointsEventArgs e) 
{ 
   Console.WriteLine("InteractiveRegionFreehand: PointCount {0} e.Status {1}, e.Cancel {2}", e.Points.Count, e.Status, e.Cancel); 
} 
public void RasterImageViewer_InteractiveRegionFreehand(RasterImageViewer viewer) 
{ 
   viewer.InteractiveMode = RasterViewerInteractiveMode.Region; 
   viewer.InteractiveRegionType = RasterViewerInteractiveRegionType.Freehand; 
   viewer.InteractiveRegionFreehand += new EventHandler<RasterViewerPointsEventArgs>(viewer_InteractiveRegionFreehand); 
 
   // Draw the mouse on image to draw an elliptical region 
   // After you are done, you must remove the event handler as in below 
   // 
   // viewer.InteractiveRegionFreehand -= new EventHandler<RasterViewerPointsEventArgs>(viewer_InteractiveRegionFreehand); 
}

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