←Select platform

IsInteractiveModeBusy Property

Summary

Determines if the control is currently performing an interactive operation.

Syntax

C++

public virtual bool IsInteractiveModeBusy { get; }

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

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

Property Value

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

Remarks

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

Example

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.

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"); 
}

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

Requirements

Target Platforms

Reference

RasterImageViewer Class

RasterImageViewer Members

Help Version 19.0.2017.10.27