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SelectZoneByPoint(Graphics,Int32,Point) Method
See Also  Example
Leadtools.Document Namespace > RasterDocumentEngine Class > SelectZoneByPoint Method : SelectZoneByPoint(Graphics,Int32,Point) Method




graphics
Graphics object specified the device that contains the drawing.
pageIndex
Specifies the index of the page that contains the zones. This index is zero-based.
pt
Specifies the X and Y coordinates that specify a point inside a zone.
Draws a selection rectangle around the zone located at the specified point.

Syntax

Visual Basic (Declaration) 
Overloads Public Sub SelectZoneByPoint( _
   ByVal graphics As Graphics, _
   ByVal pageIndex As Integer, _
   ByVal pt As Point _
)
Visual Basic (Usage)Copy Code
Dim instance As RasterDocumentEngine
Dim graphics As Graphics
Dim pageIndex As Integer
Dim pt As Point
 
instance.SelectZoneByPoint(graphics, pageIndex, pt)
C# 
public void SelectZoneByPoint( 
   Graphics graphics,
   int pageIndex,
   Point pt
)
Managed Extensions for C++ 
public: void SelectZoneByPoint( 
   Graphics graphics,
   int pageIndex,
   Point pt
)
C++/CLI 
public:
void SelectZoneByPoint( 
   Graphics graphics,
   int pageIndex,
   Point pt
)

Parameters

graphics
Graphics object specified the device that contains the drawing.
pageIndex
Specifies the index of the page that contains the zones. This index is zero-based.
pt
Specifies the X and Y coordinates that specify a point inside a zone.

Example

Visual BasicCopy Code
Public Sub SelectZoneByPointExample(ByVal graph As Graphics)
   ' Note that this is a sample key, which will not work in your toolkit
   RasterSupport.Unlock(Leadtools.RasterSupportType.Ocr, "TestKey")

   Dim rasterDocument As RasterDocumentEngine
   rasterDocument = RasterDocumentEngine.Instance
   rasterDocument.Startup()
   'assume page is added, refer to AddPage example for more information
   'assume zones are added, refer to AddZone example or FindZones for more information

   Dim pt As Point = New Point(100, 100)
   rasterDocument.SelectZoneByPoint(graph, 0, pt)
   MessageBox.Show("The selected zone index = " & rasterDocument.SelectedZoneIndex)
   rasterDocument.Shutdown()
End Sub
C#Copy Code
public void SelectZoneByPointExample(Graphics graph) 
{ 
   // Note that this is a sample key, which will not work in your toolkit 
   RasterSupport.Unlock(Leadtools.RasterSupportType.Ocr, "TestKey"); 
 
   RasterDocumentEngine rasterDocument; 
   rasterDocument = RasterDocumentEngine.Instance; 
   rasterDocument.Startup(); 
 
   // assume page is added, refer to AddPage example for more information 
 
   Point pt = new Point(100, 100); 
   rasterDocument.SelectZoneByPoint(graph, 0, pt); 
   MessageBox.Show("The selected zone index = " + rasterDocument.SelectedZoneIndex); 
   rasterDocument.Shutdown(); 
}

Remarks

Draws a selection rectangle around the zone that contains the specified point.
This method will update the SelectedZoneIndex property value if it finds a zone that contains the specified point. To draw a page, call DrawPage.
For more information, refer to Drawing Pages and Zones.

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

Leadtools.Documentrequires a Document or Medical toolkit license and unlock key. For more information, refer to: Raster Pro/Document/Medical Features