XineramaQueryExtension(3X11)

     NAME
          XineramaQueryExtension - determine whether Xinerama
          extension is enabled

     SYNTAX
          #include <X11/extensions/Xinerama.h>

          Bool XineramaQueryExtension(
            Display *dpy,
            int     *event_base,
            int     *error_base
          );

     ARGUMENTS
          dpy  Specifies the connection to the X server.

          event_base
               Returns the code of the first custom event type created
               by the extension.

          error_base
               Returns the code of the first custom error defined by
               the extension.

     DESCRIPTION
          XineramaQueryExtension returns True if the X server of
          connection dpy supports the Xinerama extension, False
          otherwise. If True is returned, then error_base and
          event_base return the error base and event base of the
          Xinerama extension.  Otherwise, errorBase and eventBase
          remain unchanged.

     SEE ALSO
          Xinerama(3X11), XineramaQueryVersion(3X11).