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PALETTERGB info  Overview  Group

The PALETTERGB macro accepts three values that represent the relative intensities of red, green, and blue and returns a palette-relative red, green, blue (RGB) specifier consisting of 2 in the high-order byte and an RGB value in the three low-order bytes. An application using a color palette can pass this specifier, instead of an explicit RGB value, to functions that expect a color.

COLORREF PALETTERGB(

    BYTE bRed,

// red component of palette-relative RGB

    BYTE bGreen,

// green component of palette-relative RGB

    BYTE bBlue

// blue component of palette-relative RGB

   );

Parameters

bRed
Specifies the intensity of the red color field.
bGreen
Specifies the intensity of the green color field.
bBlue
Specifies the intensity of the blue color field.

Return Values

The return value is a palette-relative RGB specifier. For output devices that support logical palettes, Windows matches a palette-relative RGB value to the nearest color in the logical palette of the device context as though the application had specified an index to that palette entry. If an output device does not support a system palette, Windows uses the palette-relative RGB as though it were a conventional RGB doubleword returned by the RGB macro.

Remarks

The PALETTERGB macro is defined as follows:

#define PALETTERGB(r, g, b)  (0x02000000 | RGB(r, g, b)) 

 

See Also

PALETTEINDEX, RGB


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