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McKenna  
#1 Posted : Tuesday, August 10, 2004 12:38:00 PM(UTC)
McKenna

Rank: Member

Groups: Member
Joined: 8/10/2004(UTC)
Posts: 2

I'm having a problem setting a a background in an overlay image to transparent before calling DrawOnBitmap. After I import the image to be overlayed, I skew it (it must be skewed), and the resulting overlay image has an opaque white background which shows when it is drawn on the base bitmap image. Here is the relevent portions of my code:

Code:
imgBase.LoadFromFile Server.MapPath("base.tif")
imgBorder.LoadFromFile Server.MapPath("product.tif")
imgBorder.Transforms.Resize ,30
imgBorder.Transforms.Skew  ,-13
imgBorder.Transparentize &hFFFFFFFF
imgBorderPalette.SetTransparentColor &hFFFFFFFF

	If imgBorder.HasAlphaChannel Then

		For i = 1 to 3

		imgBorder.DrawOnBitmap imgBase, varX, varY, , , , , , ,CombineModeAlpha
	
		varX = varX + varBorderWidth
		varY = varY - 32

		Next

	End If

imgBase.Formats.SelectCurrent "JPEG"
imgBase.SaveToFile Server.MapPath("combined.jpg")



Edited by user Monday, December 24, 2007 5:05:29 PM(UTC)  | Reason: Not specified

Fedor  
#2 Posted : Tuesday, August 10, 2004 11:15:00 PM(UTC)
Fedor

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Joined: 7/28/2003(UTC)
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Could you submit case with base.tif and product.tif files in order we tested it?

Edited by user Friday, May 23, 2008 3:55:45 PM(UTC)  | Reason: Not specified

Best regards,
Fedor Skvortsov
McKenna  
#3 Posted : Wednesday, August 11, 2004 7:56:00 AM(UTC)
McKenna

Rank: Member

Groups: Member
Joined: 8/10/2004(UTC)
Posts: 2

Thank you, Fedor, but I found the problem.. I was not including the constants file, so my use of 'CombineModeAlpha' was gibberish to the object...I changed the setting to a vlaue of '1' and voila, it worked.
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