Draws the specified page with(out) its zones, at any size, to a Graphics object.
If the display surface has fewer colors than the image, this method dithers the output to that display surface without affecting the actual image data.
Overload List
| Overload | Description |
|---|
| DrawPage(Graphics,Int32,Rectangle,Rectangle,Rectangle,Rectangle,RasterPaintProperties) |
Draws the specified page with(out) its zones, at any size, to a Graphics object.
If the display surface has fewer colors than the image, this method dithers the output to that display surface without affecting the actual image data.
|
| DrawPage(IntPtr,Int32,Rectangle,Rectangle,Rectangle,Rectangle,RasterPaintProperties) |
Draws the specified page with(out) its zones, at any size, to a Graphics object.
If the display surface has fewer colors than the image, this method dithers the output to that display surface without affecting the actual image data.
|
Example
| Visual Basic |  Copy Code |
|---|
Public Sub DrawPageExample(ByVal graph As Graphics)
RasterSupport.Unlock(Leadtools.RasterSupportType.Ocr, "TestKey")
Dim rasterDocument As RasterDocumentEngine
rasterDocument = RasterDocumentEngine.Instance
rasterDocument.Startup()
rasterDocument.ActivePage = 0
Dim drawZoneOpts As RasterDocumentDrawZoneOptions = rasterDocument.DrawZoneOptions
drawZoneOpts.Visible = True
Dim zonePen As Pen = New Pen(System.Drawing.Color.Blue, 3)
zonePen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid
Dim selZonePen As Pen = New Pen(System.Drawing.Color.Red, 3)
selZonePen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid
drawZoneOpts.Pen = zonePen
drawZoneOpts.SelectedPen = selZonePen
drawZoneOpts.Offset = New Point(0, 0)
drawZoneOpts.ZoomPercent = 100
rasterDocument.DrawZoneOptions = drawZoneOpts
Dim srcRect As Rectangle = New Rectangle(0, 0, rasterDocument.GetPageInfo(0).Size.Width, rasterDocument.GetPageInfo(0).Size.Height)
Dim srcClipRect As Rectangle = New Rectangle(0, 0, 0, 0)
Dim dstRect As Rectangle = New Rectangle(0, 0, rasterDocument.GetPageInfo(0).Size.Width, rasterDocument.GetPageInfo(0).Size.Height)
Dim dstClipRect As Rectangle = New Rectangle(0, 0, 0, 0)
rasterDocument.DrawPage(graph, 0, srcRect, srcClipRect, dstRect, dstClipRect, RasterPaintProperties.Default)
rasterDocument.SelectZone(graph, 0, 0, True)
rasterDocument.Shutdown()
End Sub |
| C# | Copy Code |
|---|
public void DrawPageExample(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
rasterDocument.ActivePage = 0;
RasterDocumentDrawZoneOptions drawZoneOpts = rasterDocument.DrawZoneOptions;
drawZoneOpts.Visible = true;
Pen zonePen = new Pen(System.Drawing.Color.Blue, 3);
zonePen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid;
Pen selZonePen = new Pen(System.Drawing.Color.Red, 3);
selZonePen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid;
drawZoneOpts.Pen = zonePen;
drawZoneOpts.SelectedPen = selZonePen;
drawZoneOpts.Offset = new Point(0, 0);
drawZoneOpts.ZoomPercent = 100;
rasterDocument.DrawZoneOptions = drawZoneOpts;
Rectangle srcRect = new Rectangle(0, 0, rasterDocument.GetPageInfo(0).Size.Width, rasterDocument.GetPageInfo(0).Size.Height);
Rectangle srcClipRect = new Rectangle(0, 0, 0, 0);
Rectangle dstRect = new Rectangle(0, 0, rasterDocument.GetPageInfo(0).Size.Width, rasterDocument.GetPageInfo(0).Size.Height);
Rectangle dstClipRect = new Rectangle(0, 0, 0, 0);
rasterDocument.DrawPage(graph, 0, srcRect, srcClipRect, dstRect, dstClipRect, RasterPaintProperties.Default);
rasterDocument.SelectZone(graph, 0, 0, true);
rasterDocument.Shutdown();
} |
Remarks
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
