gflBrigthness
The gflBrigthness function increase or decrease the brightness of a picture.
GFL_ERROR gflBrigthness( GFL_BITMAP * src,
GFL_BITMAP ** dst,
GFL_INT32 brightness );
Parameters
- src
- Pointer to a GFL_BITMAP structure.
- dst
-
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance. - brightness
- An integer between -255 and 255.
Return value
The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
See also