Image manipulation

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Thread: Image manipulation

  1. #1
    Join Date
    Dec 1969

    Default Image manipulation

    Using GDI, I&#039;d like to change the alpha channel for a particular colour in a bitmap so that it becomes transparent.<BR><BR>This is in order to &#039;cut out&#039; part of an image by enabling the user to paint a mask on the image using a known block colour and then processing the image server-side by turning that colour off.<BR><BR>Any ideas if this is possible (no Google luck yet) and the best approach?<BR><BR>

  2. #2
    Join Date
    Dec 1969

    Default digging through someones code

    i saw something about transparency (.MakeTransparent method) in this guys source code:<BR><BR>(download the "binary + source" obviously)<BR><BR>line 252 of the .cs file

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