DMXGetScreenCount(3X)UNIX Programmer's ManuaDMXGetScreenCount(3X)
DMXGetScreenCount - determine number of back-end screens
#include <X11/extensions/dmxext.h>
Bool DMXGetScreenCount(Display *dpy,
int *screen_count);
DMXGetScreenCount() returns the number of back-end screens
that a Xdmx(1) server controls. Since a DMX screen usually
fills all of the available area on a back-end server, there
is usually a one-to-one correspondence between DMX screens
and backend servers. However, it is also possible for a DMX
screen to cover only part of the available area on a back-
end server, and for more than one DMX screens to occupy dif-
ferent parts of the visible area on the same back-end
server.
A DMX screen may be managed as a regular X screen in the
Xdmx(1) server or may be joined with other DMX screens using
Xinerama.
DMXGetScreenCount() sets screen_count and returns True
unless there is a protocol error.
If Xinerama is active, only one logical screen will be
available to clients of the Xdmx(1) server. However, this
call will accurately reflect the number of composite back-
end screens that the Xdmx(1) server is using.
DMXGetScreenAttribtues(3X), DMXChangeScreenAttributes(3X),
DMX(3X), Xdmx(1)
XFree86 Version 4.5.0 1
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