IsInteractiveModeBusy Property

C#
Visual Basic
Objective-C
Java
C++

[BrowsableAttribute(false)]
public virtual bool IsInteractiveModeBusy {get;}

'Declaration
 
<BrowsableAttribute(False)>
Public Overridable ReadOnly Property IsInteractiveModeBusy As Boolean

'Usage
 
Dim instance As RasterImageViewer
Dim value As Boolean
 
value = instance.IsInteractiveModeBusy

[BrowsableAttribute(false)]
public:
virtual property bool IsInteractiveModeBusy {
   bool get();
}

Property Value

true if the control is currently performing an interactive operation, false otherwise.

The type of interactive user operation is determined by the InteractiveMode property.

This example sets the interactive mode to draw a rectangular region. If the mouse is dragged up or to the left, the interactive mode is cancelled.

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 MyRasterViewerRectangleEventHandler(ByVal sender As Object, ByVal e As RasterViewerRectangleEventArgs)
   Dim viewer As RasterImageViewer = CType(IIf(TypeOf sender Is RasterImageViewer, sender, Nothing), RasterImageViewer)
   Dim ee As RasterViewerRectangleEventArgs = New RasterViewerRectangleEventArgs(e.Status, e.Rectangle)
   If ((e.Rectangle.Left > e.Rectangle.Right) OrElse (e.Rectangle.Top > e.Rectangle.Bottom)) AndAlso e.Status = RasterViewerInteractiveStatus.End Then
      e.Cancel = True
      viewer.Invalidate()
      If (Not viewer.IsInteractiveModeBusy) Then
         MessageBox.Show("Interactive mode (Rectangular region) cancelled")
         viewer.InteractiveMode = RasterViewerInteractiveMode.None
      End If
   End If
   Console.WriteLine("" & e.Rectangle.Left & ", " & e.Rectangle.Top & ", " & e.Rectangle.Right & ", " & e.Rectangle.Bottom)
End Sub

Public Sub RasterImageViewer_IsInteractiveModeBusy(ByVal viewer As RasterImageViewer)
   AddHandler viewer.InteractiveRegionRectangle, AddressOf MyRasterViewerRectangleEventHandler
   viewer.InteractiveMode = RasterViewerInteractiveMode.Region
   viewer.InteractiveRegionType = RasterViewerInteractiveRegionType.Rectangle

   MessageBox.Show("Interactive mode set to draw a rectangular region." & Constants.vbLf & "If mouse is dragged up or to the left, interactive mode is cancelled")
End Sub

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

private void MyRasterViewerRectangleEventHandler(object sender, RasterViewerRectangleEventArgs e)
{
   RasterImageViewer viewer = sender as RasterImageViewer;
  RasterViewerRectangleEventArgs ee = new RasterViewerRectangleEventArgs(e.Status, e.Rectangle);
  if (((e.Rectangle.Left > e.Rectangle.Right) || (e.Rectangle.Top > e.Rectangle.Bottom)) && e.Status == RasterViewerInteractiveStatus.End)
  {
     e.Cancel = true;
     viewer.Invalidate();
     if(!viewer.IsInteractiveModeBusy)
     {
        MessageBox.Show("Interactive mode (Rectangular region) cancelled");
        viewer.InteractiveMode = RasterViewerInteractiveMode.None;
     }
  }
  Console.WriteLine(@"" + e.Rectangle.Left + ", " + e.Rectangle.Top + ", " + e.Rectangle.Right + ", " + e.Rectangle.Bottom);
}

public void RasterImageViewer_IsInteractiveModeBusy(RasterImageViewer viewer)
{
   viewer.InteractiveRegionRectangle += new EventHandler<RasterViewerRectangleEventArgs>(MyRasterViewerRectangleEventHandler);
   viewer.InteractiveMode = RasterViewerInteractiveMode.Region;
   viewer.InteractiveRegionType = RasterViewerInteractiveRegionType.Rectangle;

   MessageBox.Show("Interactive mode set to draw a rectangular region.\nIf mouse is dragged up or to the left, interactive mode is cancelled");
}

Target Platforms

Reference

RasterImageViewer Class
RasterImageViewer Members