Using Visual Classes; To Emulate A Pseudocolor Visual Class - Planar DOME Md4/PCI Installation Manual

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Using Visual Classes

A visual class (or visual) is the X Window System™
terminology to describe the characteristics of a display.
X defines the visual classes listed in this table.
Static Class
StaticGray
StaticColor
TrueColor
Static classes do not support the use of a modifiable
colormap, but the corresponding dynamic classes do.
When connected to a grayscale monitor, the Md4/PCI
board has a default visual class of
PseudoColor
applications run only on displays with a
default visual class. When the Md4/PCI board is connected
to a grayscale monitor, you can configure it to emulate
PseudoColor
System with

To emulate a PseudoColor visual class

To start the X server using
visual class, add
command and to the
For a one-headed system using the Md4/PCI board, type:
openwin -dev /dev/md4pci0.0 defclass PseudoColor
For a two-headed system using the Md4/PCI board, type:
openwin -dev /dev/md4pci0.0 defclass PseudoColor\
-dev /dev/md4pci0.1 defclass PseudoColor
X Visual Classes
Dynamic Class
GrayScale
PseudoColor
DirectColor
is the most common display type. Some
for applications by invoking the X Window
as the default visual class.
PseudoColor
PseudoColor
defclass PseudoColor
file.
Xservers
Chapter 3
.
GrayScale
PseudoColor
as the default
to the
openwin