CBitmap

This is a discussion on CBitmap within the Windows Programming forums, part of the Platform Specific Boards category; Please tell me I'm too dumb to find it in the MSDN. Maybe a cold and programming don't mix. I ...

  1. #1
    the hat of redundancy hat nvoigt's Avatar
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    CBitmap

    Please tell me I'm too dumb to find it in the MSDN. Maybe a cold and programming don't mix. I just don't get it...


    Using VC6 SP5 MFC, I have a CBitmap object constructed from a file. I need a copy of said object to modify it without touching the original. So how hard can it be to create a copy of an object ?

    Copy constructor ? Nope.
    Assignment operator ? Nope.
    Initialization method taking anything I could cast a CBitmap into ? Nope.

    WTF ?
    hth
    -nv

    She was so Blonde, she spent 20 minutes looking at the orange juice can because it said "Concentrate."

    When in doubt, read the FAQ.
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  2. #2
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    that's mfc for you, that and no DIB class wrapper.

    Here's a <i>suggestion</i> (sorry API):

    use 'LoadImage' to return an HBITMAP (ensure LR_SHARED flag is set in last param of LoadImage).

    Use 'CopyImage' to get a copy of the image.

    Use 'DeleteObject' on original HBITMAP.

    Use 'FromHandle ' member fn of CBitmap to return CBitmap obj.

    The returned CBitmap object should contain a copy of the file bitmap.

    Does that help?

  3. #3
    the hat of redundancy hat nvoigt's Avatar
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    I'll give it a try, sounds better than anything I could find

    Thanks.
    hth
    -nv

    She was so Blonde, she spent 20 minutes looking at the orange juice can because it said "Concentrate."

    When in doubt, read the FAQ.
    Then ask a smart question.

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