LEADTOOLS WPF and Silverlight (Leadtools.Windows.Controls assembly)
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InteractiveZoomTo Event

Example 





Occurs when the user performs interactive zoom to rectangle of the image display. .NET support Silverlight support
Syntax
public event EventHandler<RectangleInteractiveEventArgs> InteractiveZoomTo
'Declaration
 
Public Event InteractiveZoomTo As EventHandler(Of RectangleInteractiveEventArgs)
'Usage
 
Dim instance As ImageViewer
Dim handler As EventHandler(Of RectangleInteractiveEventArgs)
 
AddHandler instance.InteractiveZoomTo, handler
public event EventHandler<RectangleInteractiveEventArgs> InteractiveZoomTo
add_InteractiveZoomTo(function(sender, e))
remove_InteractiveZoomTo(function(sender, e))

public:
event EventHandler<RectangleInteractiveEventArgs^>^ InteractiveZoomTo
Event Data

The event handler receives an argument of type RectangleInteractiveEventArgs containing data related to this event. The following RectangleInteractiveEventArgs properties provide information specific to this event.

PropertyDescription
Bounds Gets the bounds location for the current interactive rectangle mode. .NET support Silverlight support
Cancel (Inherited from Leadtools.Windows.Controls.InteractiveEventArgs)Gets or sets a value indicating whether the interactive mode should be canceled. .NET support Silverlight support
Handled (Inherited from System.Windows.RoutedEventArgs) 
OriginalSource (Inherited from System.Windows.RoutedEventArgs) 
RoutedEvent (Inherited from System.Windows.RoutedEventArgs) 
Source (Inherited from System.Windows.RoutedEventArgs) 
Status (Inherited from Leadtools.Windows.Controls.InteractiveEventArgs)Gets the current status of the interactive mode. .NET support Silverlight support
Remarks

Occurs when the InteractiveMode property is set to InteractiveMode.ZoomTo.

Example
Copy CodeCopy Code  
Private Sub viewer_InteractiveZoomTo(ByVal sender As Object, ByVal e As RectangleInteractiveEventArgs)
    Console.WriteLine("InteractiveZoomTo: e.Rectangle {0}, e.Status {1}, e.Cancel {2}", e.Bounds, e.Status, e.Cancel)
End Sub
Public Sub BitmapSourceViewer_InteractiveZoomTo(ByVal viewer As ImageViewer)
    viewer.InteractiveMode = InteractiveMode.ZoomTo
    AddHandler viewer.InteractiveZoomTo, AddressOf viewer_InteractiveZoomTo

    MessageBox.Show("Draw a rectangle with the mouse to cause a zoom")
    ' After you are done, you must remove the event handler as in below
    '
    ' viewer.InteractiveZoomTo -= new ImageViewer.InteractiveZoomToEventHandler(viewer_InteractiveZoomTo);
End Sub
private void viewer_InteractiveZoomTo(object sender, RectangleInteractiveEventArgs e)
{
   Console.WriteLine("InteractiveZoomTo: e.Rectangle {0}, e.Status {1}, e.Cancel {2}", e.Bounds, e.Status, e.Cancel);
}
public void BitmapSourceViewer_InteractiveZoomTo(ImageViewer viewer)
{
   viewer.InteractiveMode = InteractiveMode.ZoomTo;
   viewer.InteractiveZoomTo +=new EventHandler<RectangleInteractiveEventArgs>(viewer_InteractiveZoomTo);

   MessageBox.Show("Draw a rectangle with the mouse to cause a zoom");
   // After you are done, you must remove the event handler as in below
   //
   // viewer.InteractiveZoomTo -= new ImageViewer.InteractiveZoomToEventHandler(viewer_InteractiveZoomTo);
}
private void viewer_InteractiveZoomTo(object sender, RectangleInteractiveEventArgs e)
{
   Console.WriteLine("InteractiveZoomTo: e.Rectangle {0}, e.Status {1}, e.Cancel {2}", e.Bounds, e.Status, e.Cancel);
}
public void BitmapSourceViewer_InteractiveZoomTo(ImageViewer viewer)
{
   viewer.InteractiveMode = InteractiveMode.ZoomTo;
   viewer.InteractiveZoomTo +=new EventHandler<RectangleInteractiveEventArgs>(viewer_InteractiveZoomTo);

   MessageBox.Show("Draw a rectangle with the mouse to cause a zoom");
   // After you are done, you must remove the event handler as in below
   //
   // viewer.InteractiveZoomTo -= new ImageViewer.InteractiveZoomToEventHandler(viewer_InteractiveZoomTo);
}
Private Sub viewer_InteractiveZoomTo(ByVal sender As Object, ByVal e As RectangleInteractiveEventArgs)
   Console.WriteLine("InteractiveZoomTo: e.Rectangle {0}, e.Status {1}, e.Cancel {2}", e.Bounds, e.Status, e.Cancel)
End Sub
Public Sub BitmapSourceViewer_InteractiveZoomTo(ByVal viewer As ImageViewer)
   viewer.InteractiveMode = InteractiveMode.ZoomTo
   AddHandler viewer.InteractiveZoomTo, AddressOf viewer_InteractiveZoomTo

   MessageBox.Show("Draw a rectangle with the mouse to cause a zoom")
   ' After you are done, you must remove the event handler as in below
   '
   ' viewer.InteractiveZoomTo -= new ImageViewer.InteractiveZoomToEventHandler(viewer_InteractiveZoomTo);
End Sub
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also

Reference

ImageViewer Class
ImageViewer Members

 

 


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