This macro selects an RGB color based on the specified color values and the capabilities of the output device.
The intensity for each argument is in the range 0 through 255.
If all three intensities are zero, the result is black.
If all three intensities are 255, the result is white.
For information about using color values in a color palette, see the description of the PALETTERGB macro.
The RGB macro is defined as follows.
#define RGB(r, g ,b) ((DWORD) (((BYTE) (r) | \ ((WORD) (g) << 8)) | \ (((DWORD) (BYTE) (b)) << 16)))