ImageGear for C and C++ on Linux v20.0 - Updated
API Reference Guide > Core Component API Reference > Core Component Functions Reference > Utility Functions > IG_util_colorspace_contains_alpha

This function returns whether or not the color space contains an alpha channel (either pre-multiplied or not pre-multiplied).


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AT_BOOL ACCUAPI IG_util_colorspace_contains_alpha(
        enumIGColorSpaceIDs colorSpace


Name Type Description
colorSpace enumIGColorSpaceIDs Color space ID.

Return Value:

Returns TRUE if the color space contains an alpha channel; FALSE otherwise.

Supported Raster Image Formats:

This function does not process image pixels.


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enumIGColorSpaceIDs colorSpace = IG_COLOR_SPACE_ID_RGBA;
AT_BOOL bAlpha;         /* Does the color space have alpha? */
bAlpha = IG_util_colorspace_contains_alpha(colorSpace);
/* bAlpha is TRUE */
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