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InteractiveMode Property

Summary

Gets or sets the value that controls user interaction with the control's display.

Syntax

C++

public virtual RasterViewerInteractiveMode InteractiveMode { get; set; }

Public Overridable Property InteractiveMode As Leadtools.Winforms.RasterViewerInteractiveMode

public: 
virtual property Leadtools.Winforms.RasterViewerInteractiveMode InteractiveMode { 
   Leadtools.Winforms.RasterViewerInteractiveMode get(); 
   void set (    Leadtools.Winforms.RasterViewerInteractiveMode ); 
}

Property Value

The value which controls the user interaction with the control's display.

Remarks

By default, the mouse left button starts and controls the interactive mode. To change this behavior, refer to InteractiveModeMouseButton.

You can change the mouse cursor associated with a particular interative mode with the SetInteractiveModeCursor method.

Example

This sample changes between interactive modes -- from none, to pan, to magnifying glass, to Region, and back to none.

using Leadtools.WinForms; 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Drawing; 
 
private void viewer_InteractiveModeChanged(object sender, EventArgs e) 
{ 
   RasterImageViewer viewer = sender as RasterImageViewer; 
   string s = string.Format("InteractiveMode changed to: {0}", viewer.InteractiveMode.ToString()); 
   MessageBox.Show(s); 
} 
 
public void RasterImageViewer_InteractiveMode(RasterImageViewer viewer) 
{ 
   viewer.InteractiveModeChanged += new EventHandler(viewer_InteractiveModeChanged); 
   viewer.InteractivePan += new EventHandler<RasterViewerLineEventArgs>(viewer_InteractivePan); 
 
   viewer.InteractiveRegionType = RasterViewerInteractiveRegionType.Ellipse; 
   viewer.InteractiveRegionCombineMode = RasterRegionCombineMode.Set; 
 
   switch (viewer.InteractiveMode) 
   { 
      case RasterViewerInteractiveMode.None: 
         viewer.InteractiveMode = RasterViewerInteractiveMode.Pan; 
         break; 
 
      case RasterViewerInteractiveMode.Pan: 
         viewer.InteractiveMode = RasterViewerInteractiveMode.MagnifyGlass; 
         break; 
 
      case RasterViewerInteractiveMode.MagnifyGlass: 
         viewer.InteractiveMode = RasterViewerInteractiveMode.Region; 
         break; 
 
      case RasterViewerInteractiveMode.Region: 
         viewer.InteractiveMode = RasterViewerInteractiveMode.None; 
         break; 
   } 
   viewer.InteractiveModeChanged -= new EventHandler(viewer_InteractiveModeChanged); 
}

Imports Leadtools.WinForms 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
Imports Leadtools.Drawing 
 
Private Sub viewer_InteractiveModeChanged(ByVal sender As Object, ByVal e As EventArgs) 
   Dim viewer As RasterImageViewer = CType(IIf(TypeOf sender Is RasterImageViewer, sender, Nothing), RasterImageViewer) 
   Dim s As String = String.Format("InteractiveMode changed to: {0}", viewer.InteractiveMode.ToString()) 
   MessageBox.Show(s) 
End Sub 
 
Public Sub RasterImageViewer_InteractiveMode(ByVal viewer As RasterImageViewer) 
   AddHandler viewer.InteractiveModeChanged, AddressOf viewer_InteractiveModeChanged 
   AddHandler viewer.InteractivePan, AddressOf viewer_InteractivePan 
 
   viewer.InteractiveRegionType = RasterViewerInteractiveRegionType.Ellipse 
   viewer.InteractiveRegionCombineMode = RasterRegionCombineMode.Set 
 
   Select Case viewer.InteractiveMode 
      Case RasterViewerInteractiveMode.None 
         viewer.InteractiveMode = RasterViewerInteractiveMode.Pan 
 
      Case RasterViewerInteractiveMode.Pan 
         viewer.InteractiveMode = RasterViewerInteractiveMode.MagnifyGlass 
 
      Case RasterViewerInteractiveMode.MagnifyGlass 
         viewer.InteractiveMode = RasterViewerInteractiveMode.Region 
 
      Case RasterViewerInteractiveMode.Region 
         viewer.InteractiveMode = RasterViewerInteractiveMode.None 
   End Select 
   RemoveHandler viewer.InteractiveModeChanged, AddressOf viewer_InteractiveModeChanged 
End Sub

Requirements

Target Platforms

Reference

RasterImageViewer Class

RasterImageViewer Members

Help Version 19.0.2017.10.27