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The _BLUE32 function returns the blue component intensity of a 32-bit image or surface color.


blue32color& = _BLUE32(rgbaColor&)


  • rgbaColor& is the 32-bit RGBA color value to retrieve the blue component intensity value from.
  • RGBA color values are returned by the _PALETTECOLOR, POINT, _RGB, _RGB32, _RGBA or _RGBA32 functions.
  • LONG intensity values returned range from 0 (no intensity, not present) to 255 (full intensity).


  • See the example for POINT.

See also

Keyword Reference - Alphabetical
Keyword Reference - By Usage
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