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shalom

Transparent Bltting

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Hi: I''m moving from the Windows API to DX. I am using DirectDraw because I am using 2D graphics and I don''t want to deal with the rediculous way DirectGraphics handles 2D. How do I Blt() a simple 2-D graphic with transparency using a mask? Shalom

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Sorry, I don''t have any code with me here right now so I just have to be general.

You can''t blit using a mask. What you have to do is make all of the locations you want transparent a certain color in your image that is not used anywhere else in your image. Then you have to use the surface Color Keying functions to set that color as the color key. You can either encode a pixel if you know the RGB of the color and use that or just lock the surface, get a pixel that you know is the background color and use it.

Sorry that was so cryptic, I hope I got the basics across.

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