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.\" Copyright 2004 Red Hat Inc., Durham, North Carolina.
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.\" CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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.TH DMXGetScreenCount 3X __vendorversion__
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DMXGetScreenCount \- determine number of back-end screens
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.B #include <X11/extensions/dmxext.h>
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.BI "Bool DMXGetScreenCount(Display " *dpy ,
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.BI " int " *screen_count );
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.B DMXGetScreenCount()
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returns the number of back-end screens that a
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server controls. Since a DMX screen usually fills all of the available
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area on a back-end server, there is usually a one-to-one correspondence
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between DMX screens and backend servers. However, it is also possible
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for a DMX screen to cover only part of the available area on a back-end
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server, and for more than one DMX screens to occupy different parts of
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the visible area on the same back-end server.
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A DMX screen may be managed as a regular X screen in the
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server or may be joined with other DMX screens using Xinerama.
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.B DMXGetScreenCount()
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unless there is a protocol error.
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If Xinerama is active, only one logical screen will be available to
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server. However, this call will accurately reflect the number of
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composite back-end screens that the
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.BR DMXGetScreenAttribtues "(3X), "
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.BR DMXChangeScreenAttributes "(3X), "
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.BR DMX "(3X), " Xdmx (1)
added
removed
man/DMXGetScreenCount.3
