RedirectControl Property

C#
Visual Basic
Objective-C
Java

public Control RedirectControl {get; set;}

'Declaration

Public Property RedirectControl As Control

Property Value

The external control that can be used to re-direct the spy glass render. Default value is null.

ImageViewerSpyGlassInteractiveMode supports redirecting the render output to an external control instead of the area under the mouse in the viewer. When this value is set to a valid control on the form, the interactive mode will subscribe to the control Paint event and will render the magnifying glass content to the surface of this control. Any Windows Forms will work: however, a custom user control or a PictureBox control is the most efficient since it supports double buffering.

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Controls
Imports Leadtools.Codecs
Imports Leadtools.Drawing
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Color

Dim panel As Panel = New Panel()
panel.Width = 300
panel.Dock = DockStyle.Right
_control.Controls.Add(panel)
panel.BringToFront()
Dim label As Label = New Label()
label.Text = "Double click to switch between viewer and here"
label.AutoSize = True
label.Dock = DockStyle.Top
panel.Controls.Add(label)

' Any control will do, but a PictureBox is perfect since it does double buffering
Dim redirectControl As PictureBox = New PictureBox()
redirectControl.Dock = DockStyle.Fill
redirectControl.BackColor = Color.Gray
panel.Controls.Add(redirectControl)
redirectControl.BringToFront()
redirectControl.Visible = False

_imageViewer.BringToFront()

Dim mode As ImageViewerMagnifyGlassInteractiveMode = New ImageViewerMagnifyGlassInteractiveMode()
AddHandler mode.WorkStarted,
   Sub(sender, e)
      If Not mode.RedirectControl Is Nothing Then
         mode.RedirectControl.Visible = True
      End If
   End Sub

AddHandler mode.WorkCompleted,
   Sub(sender, e)
      If Not mode.RedirectControl Is Nothing Then
         mode.RedirectControl.Visible = False
      End If
   End Sub

mode.RedirectControl = redirectControl

AddHandler panel.MouseDoubleClick,
   Sub(sender, e)
      If mode.RedirectControl Is Nothing Then
         mode.RedirectControl = redirectControl
      Else
         mode.RedirectControl = Nothing
      End If
   End Sub

_imageViewer.InteractiveModes.BeginUpdate()
_imageViewer.InteractiveModes.Add(mode)
_imageViewer.InteractiveModes.EndUpdate()

For Each shape As ImageViewerSpyGlassShape In System.Enum.GetValues(GetType(ImageViewerSpyGlassShape))
   _shapeComboBox.Items.Add(shape)
Next shape
_shapeComboBox.SelectedItem = mode.Shape
AddHandler _shapeComboBox.SelectedIndexChanged, Sub(sender, e) mode.Shape = CType(_shapeComboBox.SelectedItem, ImageViewerSpyGlassShape)

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

Panel panel = new Panel();
panel.Width = 300;
panel.Dock = DockStyle.Right;
_control.Controls.Add(panel);
panel.BringToFront();
Label label = new Label();
label.Text = "Double click to switch between viewer and here";
label.AutoSize = true;
label.Dock = DockStyle.Top;
panel.Controls.Add(label);

// Any control will do, but a PictureBox is perfect since it does double buffering
PictureBox redirectControl = new PictureBox();
redirectControl.Dock = DockStyle.Fill;
redirectControl.BackColor = Color.Gray;
panel.Controls.Add(redirectControl);
redirectControl.BringToFront();
redirectControl.Visible = false;

_imageViewer.BringToFront();

ImageViewerMagnifyGlassInteractiveMode mode = new ImageViewerMagnifyGlassInteractiveMode();
mode.WorkStarted += (sender, e) =>
{
   if (mode.RedirectControl != null)
      mode.RedirectControl.Visible = true;
};

mode.WorkCompleted += (sender, e) =>
{
   if (mode.RedirectControl != null)
      mode.RedirectControl.Visible = false;
};

mode.RedirectControl = redirectControl;

panel.MouseDoubleClick += (sender, e) =>
{
   if (mode.RedirectControl == null)
      mode.RedirectControl = redirectControl;
   else
      mode.RedirectControl = null;
};

_imageViewer.InteractiveModes.BeginUpdate();
_imageViewer.InteractiveModes.Add(mode);
_imageViewer.InteractiveModes.EndUpdate();

foreach (var shape in Enum.GetValues(typeof(ImageViewerSpyGlassShape)))
   _shapeComboBox.Items.Add(shape);
_shapeComboBox.SelectedItem = mode.Shape;
_shapeComboBox.SelectedIndexChanged += (sender, e) => mode.Shape = (ImageViewerSpyGlassShape)_shapeComboBox.SelectedItem;

Target Platforms

Reference

ImageViewerSpyGlassInteractiveMode Class
ImageViewerSpyGlassInteractiveMode Members