Public Sub AddRoundRectangleToRegion( _
   ByVal xform As RasterRegionXForm, _
   ByVal rc As Rectangle, _
   ByVal ellipse As Size, _
   ByVal combineMode As RasterRegionCombineMode _
) 

Visual Basic (Usage)	Copy Code
Dim instance As RasterImage Dim xform As RasterRegionXForm Dim rc As Rectangle Dim ellipse As Size Dim combineMode As RasterRegionCombineMode   instance.AddRoundRectangleToRegion(xform, rc, ellipse, combineMode)

public void AddRoundRectangleToRegion( 
   RasterRegionXForm xform,
   Rectangle rc,
   Size ellipse,
   RasterRegionCombineMode combineMode
)

public:
void AddRoundRectangleToRegion( 
   RasterRegionXForm^ xform,
   Rectangle rc,
   Size ellipse,
   RasterRegionCombineMode combineMode
) 

Parameters

xform

RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null (Nothing in Visual Basic) in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.

rc

A Rectangle that specifies the bounding rectangle of the region.

ellipse

Specifies the width and height of the ellipse that describes the arc of the rounded corners.

combineMode

The action to take regarding the existing image region, if one is defined.

This example will load an image, adds a round rectangle region to it, run the InvertCommand to show the affected area before saving the image back to disk.

Visual Basic

Copy Code

Public Sub AddRoundRectangleToRegionExample()    RasterCodecs.Startup()    Dim codecs As RasterCodecs = New RasterCodecs()    Dim srcFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "Image1.cmp"    Dim destFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "Image1_AddRoundRectangleToRegion.bmp"    ' Load the image    Dim image As RasterImage = codecs.Load(srcFileName)    ' Add a round rectangle region    Dim xform As RasterRegionXForm = New RasterRegionXForm()    xform.ViewPerspective = RasterViewPerspective.TopLeft    xform.XOffset = 0    xform.YOffset = 0    xform.XScalarDenominator = 1    xform.XScalarNumerator = 1    xform.YScalarDenominator = 1    xform.YScalarNumerator = 1    Dim rc As Rectangle = New Rectangle(image.ImageWidth \ 4, image.ImageHeight \ 4, image.ImageWidth \ 3, image.ImageHeight \ 3)    Dim sz As Size = New Size(rc.Width \ 4, rc.Height \ 4)    image.AddRoundRectangleToRegion(xform, rc, sz, RasterRegionCombineMode.Set)    ' Draw something on the image    Dim command As InvertCommand = New InvertCommand()    command.Run(image)    ' Save the image    codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24)    image.Dispose()    codecs.Dispose()    RasterCodecs.Shutdown() End Sub

C#

Copy Code

public void AddRoundRectangleToRegionExample()  {     RasterCodecs.Startup();     RasterCodecs codecs = new RasterCodecs();       string srcFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Image1.cmp";     string destFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Image1_AddRoundRectangleToRegion.bmp";       // Load the image     RasterImage image = codecs.Load(srcFileName);       // Add a round rectangle region       RasterRegionXForm xform = new RasterRegionXForm();     xform.ViewPerspective = RasterViewPerspective.TopLeft;     xform.XOffset = 0;     xform.YOffset = 0;     xform.XScalarDenominator = 1;     xform.XScalarNumerator = 1;     xform.YScalarDenominator = 1;     xform.YScalarNumerator = 1;       Rectangle rc = new Rectangle(image.ImageWidth / 4, image.ImageHeight / 4, image.ImageWidth / 3, image.ImageHeight / 3);     Size sz = new Size(rc.Width / 4, rc.Height / 4);     image.AddRoundRectangleToRegion(xform, rc, sz, RasterRegionCombineMode.Set);       // Draw something on the image     InvertCommand command = new InvertCommand();     command.Run(image);       // Save the image     codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24);       image.Dispose();     codecs.Dispose();     RasterCodecs.Shutdown();  }

To update an existing region, you specify how the new region is to be combined with the existing one using the combineMode parameter. For more information, refer to RasterRegionCombineMode.

For more information, refer to Creating a Region.

For more information, refer to Saving A Region.

For more information, refer to Working with the Existing Region.

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

Reference