pcrColor
Pointer to an array of RGB colors, that will be added to the grayscale bitmap. This parameter is ignored when the uDistType parameter is set to DT_USERDEFINE. If the toolkit is generating the gradient colors, the user sets the desired base color(s) in this parameter when GrayScaleToMultitone is called. The number of entries in the array depends on the value of uToneType: 1 for DT_MONOTONE, 2 for DT_DUOTONE, 3 for DT_TRITONE, 4 for DT_QUADTONE. When the toolkit generates the array of gradient colors, this parameter will be updated with that array.