GetRValue macro (wingdi.h)
The GetRValue macro retrieves an intensity value for the red component of a red, green, blue (RGB) value.
Syntax
void GetRValue(
rgb
);
Parameters
rgb
Specifies an RGB color value.
Return value
None
Remarks
The intensity value is in the range 0 through 255.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | wingdi.h (include Windows.h) |