The GetRValue macro retrieves an intensity value for the red component of a 32-bit red, green, blue (RGB) value.
BYTE GetRValue(
| DWORD rgb | // 32-bit RGB value |
| ); |
Parameters
rgb
Specifies an RGB color value.
Return Values
The return value is the intensity of the red component of the specified RGB color.
Remarks
The intensity value is in the range 0 through 255.
The GetRValue macro is defined as follows:
#define GetRValue(rgb) ((BYTE) (rgb))
See Also