This example creates an image that has a blue ellipse inside a red rectangle.

Visual Basic

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Private Sub AnnPicture_AnnPicture(ByVal g As Graphics)    Dim btmp As Bitmap = New Bitmap(100, 100, PixelFormat.Format32bppArgb)    Try       Dim graphicsImage As Graphics = Graphics.FromImage(btmp)       Try          graphicsImage.FillRectangle(Brushes.Red, New Rectangle(0, 0, 100, 100))          graphicsImage.FillEllipse(Brushes.Blue, New Rectangle(0, 0, 100, 100))          graphicsImage.Dispose()       Finally          CType(graphicsImage, IDisposable).Dispose()       End Try       ' initialize a new AnnPicture class for this image       Dim pic As AnnPicture = New AnnPicture(btmp)       ' draw the picture with no transparency       Dim rc As Rectangle = New Rectangle(10, 10, pic.Image.Width, pic.Image.Height)       Dim ia As ImageAttributes = pic.ImageAttributes       If Not ia Is Nothing Then          g.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia)          ia.Dispose()       Else          If rc.Width > 1 AndAlso rc.Height > 1 Then             g.DrawImage(pic.Image, rc)          End If       End If       ' draw the picture without the ellipse (make transparent color = blue)       rc.Offset(0, pic.Image.Height + 10)       pic.TransparentMode = AnnPictureTransparentMode.UseColor       pic.TransparentColor = Color.Blue       ia = pic.ImageAttributes       If Not ia Is Nothing Then          g.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia)          ia.Dispose()       Else          If rc.Width > 1 AndAlso rc.Height > 1 Then             g.DrawImage(pic.Image, rc)          End If       End If       ' draw the picture without the rectangle (use the top left pixel as the transparent color)       rc.Offset(0, pic.Image.Height + 10)       pic.TransparentMode = AnnPictureTransparentMode.TopLeftPixel       ia = pic.ImageAttributes       If Not ia Is Nothing Then          g.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia)          ia.Dispose()       Else          If rc.Width > 1 AndAlso rc.Height > 1 Then             g.DrawImage(pic.Image, rc)          End If       End If    Finally       CType(btmp, IDisposable).Dispose()    End Try End Sub

C#

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private void AnnPicture_AnnPicture(Graphics graphics)  {     using(Bitmap btmp = new Bitmap(100, 100, PixelFormat.Format32bppArgb))     {        using(Graphics graphicsImage = Graphics.FromImage(btmp))        {           graphicsImage.FillRectangle(Brushes.Red, new Rectangle(0, 0, 100, 100));           graphicsImage.FillEllipse(Brushes.Blue, new Rectangle(0, 0, 100, 100));           graphicsImage.Dispose();        }        // initialize a new AnnPicture class for this image        AnnPicture pic = new AnnPicture(btmp);          // draw the picture with no transparency        Rectangle rc = new Rectangle(10, 10, pic.Image.Width, pic.Image.Height);        ImageAttributes ia = pic.ImageAttributes;        if(ia != null)        {           graphics.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia);           ia.Dispose();        }        else        {           if(rc.Width > 1 && rc.Height > 1)              graphics.DrawImage(pic.Image, rc);        }          // draw the picture without the ellipse (make transparent color = blue)        rc.Offset(0, pic.Image.Height + 10);        pic.TransparentMode = AnnPictureTransparentMode.UseColor;        pic.TransparentColor = Color.Blue;          ia = pic.ImageAttributes;        if(ia != null)        {           graphics.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia);           ia.Dispose();        }        else        {           if(rc.Width > 1 && rc.Height > 1)              graphics.DrawImage(pic.Image, rc);        }          // draw the picture without the rectangle (use the top left pixel as the transparent color)        rc.Offset(0, pic.Image.Height + 10);        pic.TransparentMode = AnnPictureTransparentMode.TopLeftPixel;          ia = pic.ImageAttributes;        if(ia != null)        {           graphics.DrawImage(pic.Image, rc, 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia);           ia.Dispose();        }        else        {           if(rc.Width > 1 && rc.Height > 1)              graphics.DrawImage(pic.Image, rc);        }     }  }

System.Object
   Leadtools.Annotations.AnnPicture

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

Reference