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Thread: [RESOLVED] How to select a semi-transparent area on the picture with the mouse?

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  1. Dec 14th, 2017, 03:01 PM #3
    dreammanor
    dreammanor is offline

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    Re: How to select a semi-transparent area on the picture with the mouse?

    Hi baka, thank you for your reply. I know the following ways to achieve the functionality I need:
    1. SetLayeredWindowAttributes
    2. AlphaBlend
    3. GdiAlphaBlend
    4. TransparentBlt
    5. Pixel-Mixing
    6. BitBlt

    I wonder if there are any other better ways. In addition, I want to know which method is the easiest or which method is the most efficient.

    Also, when using the mouse to change the size of the selected area, is there a very clever way?
    Last edited by dreammanor; Dec 14th, 2017 at 03:08 PM.
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