ImageGear for C and C++ on Windows v21.0 - Updated
API Reference Guide / Core Component API Reference / Core Component Functions Reference / General Image Functions / IG_image_compression_type_get
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    IG_image_compression_type_get
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    This function returns the compression type used for storing the image indicated by hIGear.

    Declaration:

     
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    AT_ERRCOUNT ACCUAPI IG_image_compression_type_get(
       HIGEAR hIGear,
       LPDWORD lpCompression
);

    Arguments:

    Name Type Description
    hIGear HIGEAR HIGEAR handle of image.
    lpCompression LPDWORD Pointer to a variable which will receive the compression type. See enumIGBiCompression for possible values.

    Return Value:

    Returns 0 if successful. Otherwise, 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++.

    Sample:

    MFC Multipage, Pixel Access, Legacy Pixel Access

    Remarks:

    ImageGear currently uses only two types of image storage (compression): "Run Ends" and "Standard". ImageGear always uses "Run Ends" compression for 1-bit images, and "Standard" (uncompressed) format for all other types of images. If the function returns any value other than IG_BI_RLE and IG_BI_EMPTY, this means that the DIB uses Standard storage format. This behavior is preserved for compatibility with previous versions of ImageGear.

     

     

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