D3DRGB(r, g, b) \
(0xff000000L | ( ((long)((r) * 255)) << 16) | \
(((long)((g) * 255)) << 8) | (long)((b) * 255))
Initializes a color with the supplied RGB values.
·Returns the D3DCOLOR value corresponding to the supplied RGB values.
r, g, and b
Red, green, and blue components of the color. These should be floating-point values in the range 0 through 1.