WorkingInteractiveMode Property

Summary

The ImageViewerInteractiveMode that is currently processing the input events (working).

Syntax

C++/CLI

public virtual ImageViewerInteractiveMode WorkingInteractiveMode { get; }

public:  
   virtual property ImageViewerInteractiveMode^ WorkingInteractiveMode 
   { 
      ImageViewerInteractiveMode^ get() 
   }

Property Value

The ImageViewerInteractiveMode that is currently processing the input events (working).

Remarks

ImageViewer will hook to the ImageViewerInteractiveMode.WorkStarted and ImageViewerInteractiveMode.WorkCompleted of the interactive modes set in InteractiveModes. When work starts or completes, the PropertyChanged event fires with "WorkingInteractiveMode" as the property name and the value of WorkingInteractiveMode updates accordingly. Use WorkingInteractiveMode to perform any custom action required by your application.

For devices that support mouse pointers, the cursor will change to the value of ImageViewerInteractiveMode.WorkingCursor when the interactive mode is working.

For more information, refer to Image Viewer Interactive Modes.

Example

This example will track the working interactive mode value and set it in a label.

Run the demo, click the Example button.

Start with the ImageViewer example, remove all the code inside the example function (search for the "// TODO: add example code here" comment) and insert the following code:

using Leadtools; 
using Leadtools.Controls; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
 
 
public ImageViewerForm _form = new ImageViewerForm(); 
public ImageViewer _imageViewer; 
 
public void ImageViewerWorkingInteractiveModeExample() 
{ 
   // Get the ImageViewer control 
   _imageViewer = _form.ImageViewer; 
 
   // Load Image 
   using (var codecs = new RasterCodecs()) 
      _imageViewer.Image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Cannon.jpg")); 
 
   // Add Pan/Zoom interactive mode 
   // Click and drag to pan, CTRL-Click and drag to zoom in and out 
   _imageViewer.DefaultInteractiveMode = new ImageViewerPanZoomInteractiveMode(); 
 
   // Subscribe to PropertyChanged event 
   _imageViewer.PropertyChanged += (sender, e) => 
   { 
      if (e.PropertyName == "WorkingInteractiveMode") 
      { 
         if (_imageViewer.WorkingInteractiveMode != null) 
         { 
            Debug.WriteLine("Interactive mode working: " + _imageViewer.WorkingInteractiveMode.Name); 
            _imageViewer.InteractiveModes.BeginUpdate(); 
            _imageViewer.WorkingInteractiveMode.WorkingCursor = Cursors.Hand; 
            _imageViewer.InteractiveModes.EndUpdate(); 
         } 
         else 
            Debug.WriteLine("Interactive mode finished work"); 
      } 
   }; 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

Reference

ImageViewer Class

ImageViewer Members

Leadtools.Controls Namespace

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Help Version 23.0.2024.2.29

Leadtools.Controls Assembly

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