CMCheckColors
The CMCheckColors function determines whether given colors lie within the output gamut of a specified transform.
BOOL WINAPI CMCheckColors(
HCMTRANSFORM hcmTransform, // transform handle
LPCOLOR lpaInputColors, // array of COLORs
DWORD nColors, // COLOR array size
COLORTYPE ctInput, // input color type
LPBYTE lpaResult // buffer for results
);
Parameters
- hcmTransform
Handle to the color transform to use. - lpaInputColors
Pointer to an array of COLOR structures to check against the output gamut. - nColors
Specifies the number of elements in the array. - ctInput
Specifies the input color type. - lpaResult
Pointer to a buffer in which to place an array of bytes containing the test results. Each byte in the buffer corresponds to a COLOR structure, and on exit has been set to an unsigned value between 0 and 255. The value 0 denotes that the color is in gamut, while a nonzero value indicates that it is out of gamut. For any integer n such that 0 < n < 255, a result value of n + 1 indicates that the corresponding color is at least as far out of gamut as would be indicated by a result value of n. These values are usually generated from the gamutTag in the ICC profile.
Return Values
If this function succeeds, the return value is TRUE.
If this function fails, the return value is FALSE. If the function is not successful, the CMM should call SetLastError to set the last error to a valid error value defined in Winerror.h.
Remarks
Every CMM is required to export this function.
If the input color type is not compatible with the color transform CMCheckColors fails.
Requirements
** Windows NT/2000/XP/Vista:** Included in Windows 2000 and later.
** Windows 95/98/Me:** Included in Windows 98 and later.
** Header:** Declared in Wingdi.h.
** Library:** Use Gdi32.lib.