 11-11-2008, 7:39
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Gunasekaran
 
Joined on 05-07-2008
Chennai,India
Posts 174
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Re: How to make the Floaterimage transparent
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I tried to add an annotationstamp object to get the result like the following. But it seems that the imageattributes property of the annpicture object is readonly. I am not sure that whether that is one doesn't allow me get the opacity of the image. If you can provide some workaround or a patch it would be veryuseful.
RasterImageViewer2.Image = codecs.Load("d:\\4002.jpg")
Dim stamp As AnnStampObject = New AnnStampObject
Dim pic As New AnnPicture(Image.FromFile("D:\\327.bmp"))
pic.TransparentMode = AnnPictureTransparentMode.UseColor
pic.TransparentColor = Color.Black
Dim ia As Imaging.ImageAttributes = pic.ImageAttributes
Dim cmxPic As Imaging.ColorMatrix = New Imaging.ColorMatrix()
cmxPic.Matrix33 = 128
'Dim iaPic As Imaging.ImageAttributes = New Imaging.ImageAttributes()
ia.SetColorMatrix(cmxPic, Imaging.ColorMatrixFlag.Default, Imaging.ColorAdjustType.Bitmap)
Dim gfxPic As Graphics = Graphics.FromImage(pic.Image)
gfxPic.DrawImage(pic.Image, New Rectangle(0, 0, pic.Image.Width, pic.Image.Height), 0, 0, pic.Image.Width, pic.Image.Height, GraphicsUnit.Pixel, ia)
gfxPic.Dispose()
Thanks and Regards
Guna
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