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4/8/2010

This macro retrieves an intensity value for the red component of a 32-bit 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.

The GetRValuemacro is defined as follows.

Copy Code 
#define GetRValue(rgb)   ((BYTE) (rgb))

Requirements

Header windows.h
Windows Embedded CE Windows CE 1.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also