Defined in the pixel format descriptors of hardware that supports one hardware palette in 256-color mode only. For such systems to use hardware acceleration, the hardware palette must be in a fixed order (for example, 3-3-2) when in RGBA mode or must match the logical palette when in color-index mode.
When this flag is set, you must call see cref="SetSystemPaletteUse" /> in your program to force a one-to-one mapping of the logical palette and the system palette. If your OpenGL hardware supports multiple hardware palettes and the device driver can allocate spare hardware palettes for OpenGL, this flag is typically clear.
This flag is not set in the generic pixel formats.
Gdi Class | Tao.Platform.Windows Namespace