By default, the color mode for a DC is set to index mode, and the DC has a Logical Color Table set to the values given in the following list. When in index mode, these defaults are always considered to be part of the color table unless they are explicitly overwritten by GreCreateLogColorTable.

Note: Presentation drivers that support less than 16 colors must map Value 0 (CLR_BACKGROUND) through Value 15 (CLR_PALEGRAY) to device colors. If GreQueryColorData is called while the default color table is the current color table, the presentation driver returns the device colors.

Default values for the Logical Color Table are:

CLR_FALSE

(-5). All color planes or bits, or both, are FALSE.

(-4). All color planes or bits, or both, are TRUE.

(-3). This is the API default. It is a reserved value and is not passed to the presentation driver.

(-2). This index is never loaded explicitly. It always produces white when the default table is in force or when the index is set to RGB. When, with a realized color table and an index that is not RGB, this option is unavailable, it produces CLR_BACKGROUND.

(-1). This index is never loaded explicitly. It always produces black when the default table is in force or when the index is set to RGB. When, with a realized color table and an index that is not RGB, this option is unavailable, it produces CLR_NEUTRAL.

(0). This is the natural background color of the device. For a hardcopy device, it is the paper color and for a display device it is the default window color, SYSCLR_WINDOW.

(1)

(2)

(3)

(4)

(5)

(6)

(7) This is a device-dependent contrasting color. For a display device, it is the default window text color, SYSCLR_WINDOWTEXT.

(8)

(9)

(10)

(11)

(12)

(13)

(14)

(15)

Colors with indexes greater than 15 are device-dependent defaults, which must be defined by the presentation driver. The effective range of the color table, which includes the default color table, is -5 through MaxIndex. Color indexes outside this range that have not been loaded are not used by applications because these colors cannot be guaranteed.

Where physically possible, the default colors are always available on a device. For devices that support more than 16 colors, requested colors can be mapped to colors other than the defaults (when they exist). Such colors cannot be guaranteed to be similar for different devices. They can be different for other releases of applications and presentation drivers. Applications that depend on precise colors beyond the defaults must query the available colors (see GreQueryRealColors) and, when necessary, realize their own color tables (see GreRealizeColorTable).