int** to CImage to png file
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  1. #1
    Join Date
    Apr 2008
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    118

    int** to CImage to png file

    I have an array of RGB values that I use to draw an image on screen. I need to save that image to a png file.

    I've looked at the usual candidates - libpng and the like, and they all seem to suffer from the usual Win32 multi-threaded non-threaded debug release problem. I'd really like to not have to bother with that problem.

    So, I see that he CImage class can write png files. Ace. What I can't work out is how to load a CImage with RGB values from my ordinary array in order to write the output to a png file. Can anyone point me in the right direction?

  2. #2
    Join Date
    Feb 2005
    Posts
    2,160

    Re: int** to CImage to png file

    Have you looked at the GetBits() member function? That retrieves a pointer to the actual bitmap buffer.

  3. #3
    Join Date
    Jun 2002
    Location
    Stockholm, Sweden
    Posts
    1,610

    Re: int** to CImage to png file

    ...or loop and call SetPixel or SetPixelRGB to assign each pixel.

    Or, you can use CImage::BitBlt to copy all the image data from a device context. You may be able to use a CBitmap (+SetBitmapBits) selected into the device context you are copying the data from.
    Nobody cares how it works as long as it works

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