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InteractiveRegionEllipse Event

Summary

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

Syntax

C++

public event EventHandler<RasterViewerRectangleEventArgs> InteractiveRegionEllipse

Public Event InteractiveRegionEllipse As EventHandler(Of RasterViewerRectangleEventArgs)

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.

Property	Description
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.

Remarks

Only occurs when the InteractiveMode property is set to RasterViewerInteractiveMode.Region and the InteractiveRegionType is set to RasterViewerInteractiveRegionType.Ellipse.

Example

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

Imports Leadtools.WinForms 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
Imports Leadtools.Drawing 
 
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

using Leadtools.WinForms; 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Drawing; 
 
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); 
}