Occurs when the user performs interactive creation of a freehand region for the image.
public event EventHandler<RasterViewerPointsEventArgs> InteractiveRegionFreehand
public:
event EventHandler<RasterViewerPointsEventArgs^>^ InteractiveRegionFreehand
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
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);
}
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