ZoomToRectangle Method

C#
Visual Basic
Objective-C
Java
C++

public virtual void ZoomToRectangle( 
   Rectangle rc
)

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

'Usage
 
Dim instance As RasterImageViewer
Dim rc As Rectangle
 
instance.ZoomToRectangle(rc)

public:
virtual void ZoomToRectangle( 
   Rectangle rc
)

Parameters

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

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.WinForms
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Drawing

Public Sub RasterImageViewer_ZoomToRectangle(ByVal viewer As RasterImageViewer)
   Dim rectSize As Integer = 200
   Dim left As Integer = (viewer.ClientRectangle.Right - viewer.ClientRectangle.Left - rectSize) \ 2
   Dim top As Integer = (viewer.ClientRectangle.Bottom - viewer.ClientRectangle.Top - rectSize) \ 2
   Dim rcZoom As Rectangle = New Rectangle(left, top, rectSize, rectSize)
   viewer.ZoomToRectangle(rcZoom)
End Sub

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

public void RasterImageViewer_ZoomToRectangle(RasterImageViewer viewer)
{
   int rectSize = 200;
   int left = (viewer.ClientRectangle.Right - viewer.ClientRectangle.Left - rectSize) / 2;
   int top =  (viewer.ClientRectangle.Bottom - viewer.ClientRectangle.Top - rectSize) / 2;
   Rectangle rcZoom = new Rectangle(left, top, rectSize, rectSize);
   viewer.ZoomToRectangle(rcZoom);
}

Target Platforms

Reference

RasterImageViewer Class
RasterImageViewer Members