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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 different 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(3)
,
DMXChangeScreenAttributes(3)
, DMX(3)
, Xdmx(1)
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