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InteractiveRegionEllipse Event
See Also 
Leadtools.WinForms Namespace > RasterImageViewer Class : InteractiveRegionEllipse Event



Occurs when the user performs interactive creation of an elliptical region for the image.

Syntax

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

Event Data

The event handler receives an argument of type RasterViewerRectangleEventArgs containing data related to this event. The following RasterViewerRectangleEventArgs properties provide information specific to this event.

PropertyDescription
Cancel (Inherited from Leadtools.WinForms.RasterViewerInteractiveEventArgs)Gets or sets a value indicating whether the interactive mode should be canceled.
Rectangle Returns the current interactive mode rectangle.
Status (Inherited from Leadtools.WinForms.RasterViewerInteractiveEventArgs)Gets the current status of the interactive mode.

Example

This sample lets you draw an elliptical region with the mouse Also, it displays the contents of the InteractiveRegionEllipse event in the console

Visual BasicCopy Code
Private Sub viewer_InteractiveRegionEllipse(ByVal sender As Object, ByVal e As RasterViewerRectangleEventArgs)
   Console.WriteLine("InteractiveRegionEllipse: e.Rectangle {0}, e.Status {1}, e.Cancel {2}", e.Rectangle, e.Status, e.Cancel)
End Sub
Public Sub RasterImageViewer_InteractiveRegionEllipse(ByVal viewer As RasterImageViewer)
   viewer.InteractiveMode = RasterViewerInteractiveMode.Region
   viewer.InteractiveRegionType = RasterViewerInteractiveRegionType.Ellipse
   AddHandler viewer.InteractiveRegionEllipse, AddressOf viewer_InteractiveRegionEllipse

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

   // Draw the mouse on image to draw an elliptical region
   // After you are done, you must remove the event handler as in below
   //
   // viewer.InteractiveRegionEllipse -= new EventHandler<RasterViewerRectangleEventArgs>(viewer_InteractiveRegionEllipse);
}

Remarks

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7

See Also