ImageGear for C and C++ on Windows v21.0 - Updated
API Reference Guide / Core Component API Reference / Core Component Functions Reference / Image Processing Functions / IG_IP_swap_red_blue
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    IG_IP_swap_red_blue
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    This function reverses the color sequence in the pixels of image hIGear's image bitmap.

    Declaration:

     
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    AT_ERRCOUNT ACCUAPI IG_IP_swap_red_blue ( HIGEAR hIGear);
    

    Arguments:

    Name Type Description
    hIGear HIGEAR HIGEAR handle of image.

    Return Value:

    Returns the number of ImageGear errors that occurred during this function call.

    Supported Raster Image Formats:

    All pixel formats supported by ImageGear for C and C++. 

    Non-RGB images are converted to RGB for processing, and then back to original color space.

    Sample:

    Image Processing

    Example:

     
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    HIGEAR hIGear;      /* HIGEAR handle of 24-bit image */
    IG_IP_swap_red_blue ( hIGear );
    

    Remarks:

    If the sequence is Blue-Green-Red (the standard sequence for a DIB), it is reversed to Red-Green-Blue. If Red-Green-Blue, each pixel is reversed to Blue-Green-Red. This function is typically used on 24-bit RGB images, but it can operate on other image types as well.