The WHITEPOINT structure specifies the spectrum of the white color.
Common white points. Possible values:
|CIELAB_D50||D50 white point.|
|CIELAB_D55||D55 white point.|
|CIELAB_D65||D65 white point.|
|CIELAB_D75||D75 white point.|
|CIELAB_D93||D93 white point.|
|CIELAB_CUSTOM||Use the values of xWhite and yWhite members.|
|CIELAB_DEFAULT||Dfault (D55) white point.|
X value between 0.0 and 1.0.
y value between 0.0 and 1.0.
LPWHITEPOINT is a pointer to a WHITEPOINT structure. Where the function parameter type is LPWHITEPOINT, you can declare a WHITEPOINT variable, update the structure's fields, and pass the variable's address. Declaring a LPWHITEPOINT variable is necessary only if your program requires a pointer.
Any of the predefined white points can be used, or custom x and y values can be used in an xyY system with CIELAB_CUSTOM, Y is always 1.0.
The structure is used within: