InteractiveRegionFreehand Event

C#
Visual Basic
Objective-C
Java
C++

public event EventHandler<RasterViewerPointsEventArgs> InteractiveRegionFreehand

'Declaration
 
Public Event InteractiveRegionFreehand As EventHandler(Of RasterViewerPointsEventArgs)

'Usage
 
Dim instance As RasterImageViewer
Dim handler As EventHandler(Of RasterViewerPointsEventArgs)
 
AddHandler instance.InteractiveRegionFreehand, handler

public:
event EventHandler<RasterViewerPointsEventArgs^>^ InteractiveRegionFreehand

The event handler receives an argument of type RasterViewerPointsEventArgs containing data related to this event. The following RasterViewerPointsEventArgs 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.
Points	Returns the current interactive mode points.
Status (Inherited from Leadtools.WinForms.RasterViewerInteractiveEventArgs)	Gets the current status of the interactive mode.

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

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

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

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

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

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

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);
}

Target Platforms

Reference

RasterImageViewer Class
RasterImageViewer Members