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ZoomToRectangle Method
See Also 
Leadtools.WinForms Namespace > RasterImageViewer Class : ZoomToRectangle Method



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

Syntax

Visual Basic (Declaration) 
Public Overridable Sub ZoomToRectangle( _
   ByVal rc As Rectangle _
)
Visual Basic (Usage)Copy Code
Dim instance As RasterImageViewer
Dim rc As Rectangle
 
instance.ZoomToRectangle(rc)
C# 
public virtual void ZoomToRectangle( 
   Rectangle rc
)
C++/CLI 
public:
virtual void ZoomToRectangle( 
   Rectangle rc
)

Parameters

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

Example

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

Visual BasicCopy Code
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
C#Copy Code
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);
}

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7

See Also