ZoomToRectangle Method

C#
Visual Basic
Objective-C
Java
C++

public virtual void ZoomToRectangle( 
   Rect rc
)

'Declaration
 
Public Overridable Sub ZoomToRectangle( _
   ByVal rc As Rect _
)

'Usage
 
Dim instance As ImageViewer
Dim rc As Rect
 
instance.ZoomToRectangle(rc)

public:
virtual void ZoomToRectangle( 
   Rect rc
)

Parameters

rc: The rectangle to which the image should be zoomed, in client coordinates.

The control will call this method during InteractiveMode.ZoomTo.

This example zooms to a 200x200 square in the center of the image.

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

Copy Code

Imports Leadtools.Windows.Controls

Public Sub BitmapSourceViewer_ZoomToRectangle(ByVal viewer As ImageViewer)
    Dim rectSize As Double = 200
    Dim left As Double = (viewer.PhysicalSize.Width - rectSize) / 2.0
    Dim top As Double = (viewer.PhysicalSize.Height - rectSize) / 2.0
    Dim rcZoom As Rect = New Rect(left, top, rectSize, rectSize)
    viewer.ZoomToRectangle(rcZoom)
End Sub

using Leadtools.Help;
using Leadtools.Windows.Controls;

public void BitmapSourceViewer_ZoomToRectangle(ImageViewer viewer)
{
   double rectSize = 200;
   double left = (viewer.PhysicalSize.Width - rectSize) / 2.0;
   double top = (viewer.PhysicalSize.Height - rectSize) / 2.0;
   Rect rcZoom = new Rect(left, top, rectSize, rectSize);
   viewer.ZoomToRectangle(rcZoom);
}

using Leadtools.Help;
using Leadtools.Windows.Controls;

public void BitmapSourceViewer_ZoomToRectangle(ImageViewer viewer)
{
   double rectSize = 200;
   double left = (viewer.PhysicalSize.Width - rectSize) / 2.0;
   double top = (viewer.PhysicalSize.Height - rectSize) / 2.0;
   Rect rcZoom = new Rect(left, top, rectSize, rectSize);
   viewer.ZoomToRectangle(rcZoom);
}

Imports Leadtools
Imports Leadtools.Windows.Controls

Public Sub BitmapSourceViewer_ZoomToRectangle(ByVal viewer As ImageViewer)
   Dim rectSize As Double = 200
   Dim left As Double = (viewer.PhysicalSize.Width - rectSize) / 2.0
   Dim top As Double = (viewer.PhysicalSize.Height - rectSize) / 2.0
   Dim rcZoom As Rect = New Rect(left, top, rectSize, rectSize)
   viewer.ZoomToRectangle(rcZoom)
End Sub

Target Platforms

Reference

ImageViewer Class
ImageViewer Members