GetRValue

  • 项目

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

BYTE GetRValue( 
  DWORD rgb
);

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))

Requirements

OS Versions: Windows CE 1.0 and later.
Header: Windows.h.

See Also

GetBValue | GetGValue | PALETTERGB | RGB | GDI Macros

Last updated on Wednesday, April 13, 2005

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