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

Declaration:

AT_BOOL ACCUAPI IG_util_colorspace_contains_alpha(
        enumIGColorSpaceIDs colorSpace
);

Arguments:

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.

Example:

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 */