Barco CORONIS MFGD 3621 - Manual (Page 68)

BarcoMed control panel operation
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applications that are designed to work correctly with 8-bit (256-color)
modes should continue to work normally.
Note:
Ditherng is not used while in this mode. Also, direct access to the
hardware through DirectDraw is not allowed in this mode.
User Modifiable Color Palette
This option allows applications to modify the palette contents
dynamically. This mode reserves the first 10 and last 10 entries in the
palette for the Windows operating system, but applications can
manipulate the middle 236 entries. This is the standard palette mode as
configured by Windows.
Static Gray Palette including standard system colors
This option sets the palette to be a static linear set of 236 gray values.
The 20 standard system colors are converted from RGB to gray values
and are added to the 236 static gray values. Applications are denied the
ability to dynamically change or allocate palette entries.
Static Gray Palette with NO system colors
This option sets the palette to be a static linear ramp of 256 shades of
gray. Applications are denied the ability to dynamically change or
allocate palette entries.
Drawing Modes
In the Drawing Mode section you can choose from the following
Drawing Modes. If any of the options in this section are grayed out, then
they are not available for the model controller with which you are
working.
Enable DirectDraw
This option allows the user to enable or disable DirectDraw. DirectDraw
is a software interface that provides direct access to display devices