Planar Dome EX manual Palette options with multiple displays, Desktop icons, Dynamic gray palette

Palette options with multiple displays

The SelectPalette and RealizePalette functions in the Microsoft Developer’s Network, or MSDN, work across all flat-panel displays if the primary panel is palettized. The palettes of all palette-type devices are synchronized. If, however, the primary panel is not palettized, the SelectPalette and RealizePalette functions select the palette into the background, and palettized devices are not synchronized.

Desktop icons

The palette specifications of the primary display determine how desktop icons are drawn. For example, the desktop icons appear gray on a color screen if the primary display is set to a gray palette.

Dynamic gray palette

The dynamic gray palette reserves the first and last 10 entries in the palette for the Windows operating system, but you can manipulate the middle 236 entries. Your application can create

a256-entry gray ramp in any 8-bit driver by calling the Windows API function SetSystemPaletteUse(), but doing so causes all icons to be redrawn in black and white.

The dynamic gray palette accommodates gray-mapped Windows colors for the first and last 10 palette entries.

Nonlinear static gray palette

The nonlinear static gray palette sets the first and last 10 palette entries to gray-mapped Windows colors. The middle 236 entries are ramped in ascending order, excluding the first and last 10 palette entries. Windows applications that use the first and last 10 palette entries as Windows colors display correctly on the screen.

Although the nonlinear static gray palette provides correct colors for applications using the Windows palette, colors display incorrectly if the application assumes that a static palette is always ramped.

Grayscale Palette Options 39