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Viewer Property
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Leadtools.WinForms Namespace > RasterImagePanViewer Class : Viewer Property




Gets and sets the viewer currently assigned for panning process by the control.

Syntax

Visual Basic (Declaration) 
Public Property Viewer As RasterImageViewer
Visual Basic (Usage)Copy Code
Dim instance As RasterImagePanViewer
Dim value As RasterImageViewer
 
instance.Viewer = value
 
value = instance.Viewer
C# 
public RasterImageViewer Viewer {get; set;}
Managed Extensions for C++ 
public: __property RasterImageViewer* get_Viewer();
public: __property void set_Viewer( 
   RasterImageViewer* value
);
C++/CLI 
public:
property RasterImageViewer^ Viewer {
   RasterImageViewer^ get();
   void set (RasterImageViewer^ value);
}

Return Value

The viewer object, which has an image to be pan using the RasterImagePanViewer control.

Example

This example shows how to use a pan window with a RasterImageViewer

Visual BasicCopy Code
Private Class MyForm1 : Inherits Form
   Public panViewer As RasterImagePanViewer
   Public viewer As RasterImageViewer
   Public Sub New(ByVal title As String)
      Text = title
      ' Set the size of the form
      Size = New Size(400, 400)

      ' Create the viewer
      viewer = New RasterImageViewer()
      viewer.Size = New Size(Size.Width, Size.Height \ 2)
      viewer.Dock = DockStyle.Fill

      ' Load an image
      RasterCodecs.Startup()
      Dim codecs As RasterCodecs = New RasterCodecs()
      viewer.Image = codecs.Load("C:\program files\LEAD Technologies\LEADTOOLS 15\Images\image1.cmp")
      RasterCodecs.Shutdown()

      panViewer = New RasterImagePanViewer()
      panViewer.Dock = DockStyle.Top
      panViewer.BackColor = Color.Bisque
      panViewer.ClipCursor = True
      panViewer.BorderStyle = BorderStyle.Fixed3D
      panViewer.BringToFront()
      AddHandler panViewer.Pan, AddressOf panViewer_Pan
      panViewer.RectangleColor = Color.Blue
      panViewer.ImageColor = Color.FromArgb(128, 0, 0, 0)
      panViewer.Cursor = Cursors.Hand
      panViewer.Viewer = viewer

      Controls.Add(panViewer)
      Controls.Add(viewer)
      viewer.BringToFront()
   End Sub

   Private Sub panViewer_Pan(ByVal sender As Object, ByVal e As RasterImagePanViewerEventArgs)
      Select Case e.Status
         Case RasterImagePanViewerStatus.Begin, RasterImagePanViewerStatus.Panning, RasterImagePanViewerStatus.End
            Text = "Pan Status = " & e.Status.ToString() & " Rectangle =" & e.Rectangle.ToString() & " Cancel = " & e.Cancel.ToString()
            Console.WriteLine(Text)
            Exit Select
      End Select
   End Sub
End Class

Public Sub RasterImagePanViewer_Viewer()
   Dim form As MyForm1 = New MyForm1("Test_RasterImagePanViewer_Viewer")
   form.ShowDialog()
End Sub
C#Copy Code
class MyForm1 : Form 
{ 
   public RasterImagePanViewer panViewer; 
   public RasterImageViewer viewer; 
   public MyForm1(string title) 
   { 
      Text = title; 
      // Set the size of the form 
      Size = new Size(400, 400); 
 
      // Create the viewer 
      viewer = new RasterImageViewer(); 
      viewer.Size = new Size(Size.Width, Size.Height / 2); 
      viewer.Dock = DockStyle.Fill; 
 
      // Load an image 
      RasterCodecs.Startup(); 
      RasterCodecs codecs = new RasterCodecs(); 
      viewer.Image = codecs.Load(@"C:\program files\LEAD Technologies\LEADTOOLS 15\Images\image1.cmp"); 
      RasterCodecs.Shutdown(); 
 
      panViewer = new RasterImagePanViewer(); 
      panViewer.Dock = DockStyle.Top; 
      panViewer.BackColor = Color.Bisque; 
      panViewer.ClipCursor = true; 
      panViewer.BorderStyle = BorderStyle.Fixed3D; 
      panViewer.BringToFront(); 
      panViewer.Pan += new EventHandler<RasterImagePanViewerEventArgs>(panViewer_Pan); 
      panViewer.RectangleColor = Color.Blue; 
      panViewer.ImageColor = Color.FromArgb(128, 0, 0, 0); 
      panViewer.Cursor = Cursors.Hand; 
      panViewer.Viewer = viewer; 
 
      Controls.Add(panViewer); 
      Controls.Add(viewer); 
      viewer.BringToFront(); 
   } 
 
   private void panViewer_Pan(object sender, RasterImagePanViewerEventArgs e) 
   { 
      switch (e.Status) 
      { 
         case RasterImagePanViewerStatus.Begin: 
         case RasterImagePanViewerStatus.Panning: 
         case RasterImagePanViewerStatus.End: 
            { 
               Text = "Pan Status = " + e.Status.ToString() + " Rectangle =" + e.Rectangle.ToString() + " Cancel = " + e.Cancel.ToString(); 
               Console.WriteLine(Text); 
               break; 
            } 
      } 
   } 
} 
 
public void RasterImagePanViewer_Viewer() 
{ 
   MyForm1 form = new MyForm1("Test_RasterImagePanViewer_Viewer"); 
   form.ShowDialog(); 
}

Remarks

This property contains the RasterImageViewer object which contains an image to be pan using the RasterImagePanViewer control. Whenever the Viewer property is changed, the image displayed in the RasterImagePanViewer control is affect by this change.

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also