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GetRValue macro

The GetRValue macro retrieves an intensity value for the red component of a red, green, blue (RGB) value.

Syntax


BYTE GetRValue(
   DWORD rgb
);

Parameters

rgb

Specifies an RGB color value.

Return value

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.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Wingdi.h (include Windows.h)

See also

Colors Overview
Color Macros
GetBValue
GetGValue
PALETTEINDEX
PALETTERGB
RGB

 

 

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