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 GetBValue

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

    BYTE GetRValue( 
      DWORD rgb  // 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.

Requirements

• Windows NT/2000/XP/Vista: Included in Windows NT 3.1 and later.
• Windows 95/98/Me: Included in Windows 95 and later.
• Header: Declared in Wingdi.h; include Windows.h.

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Notebook exported on Monday, 7 July 2008, 18:56:50 PM Eastern Daylight Time