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XINERAMA(3)                                                        XINERAMA(3)

       Xinerama - API for Xinerama extension to X11 Protocol

       #include <X11/extensions/Xinerama.h>

       Bool XineramaQueryExtension (Display *dpy,
            int *event_base_return, int *error_base_return);

       Status XineramaQueryVersion (Display *dpy,
            int *major_version_return,
            int *minor_version_return);

       Bool XineramaIsActive (Display *dpy);

       XineramaScreenInfo * XineramaQueryScreens (Display *dpy,
            int *number);

       display   Specifies the connection to the X server.

                 Specifies the return location for the assigned base event code

                 Specifies the return location for the assigned base error code

                 Returns the major version supported by the server

                 Returns the minor version supported by the server

       number    Returns the number of entries in the returned XineramaScreenInfo array.

       Xinerama  is  a  simple  library  designed to interface the Xinerama Extension for retrieving information about
       physical output devices which may be combined into a single logical X screen.

       The XineramaQueryExtension function queries the Xserver to determine the availability of  the  Xinerama  Exten-
       sion.  If the extension is available, the return value is True, and event_base_return and error_base_return are
       set to the base event number and base error number for the  extension,  respectively.   Otherwise,  the  return
       value is False, and the values of event_base_return and error_base_return are undefined.

       The XineramaQueryVersion function returns the version of the Xinerama extension implemented by the Xserver. The
       version is returned in major_version_return and minor_version_return. The major version will be incremented for
       protocol  incompatible  changes,  and  the  minor  version  will  be incremented for small, upwardly compatible

       If the Xinerama library is compatible with the version returned by the  server,  it  returns  nonzero.  If  the
       server does not support the XINERAMA extension, or if there was an error during communications with the server,
       or if the server and library protocol versions are incompatible, it returns zero.

       The XineramaIsActive function returns a Boolean operator used to determine if  Xinerama  is  activated  on  the
       screen. Returns True for active and False for not active.

       The  XineramaQueryScreens()  function  returns  info  about  each  individual output device within the Xinerama
       Screen.  The integer pointed to by the number argument is updated to the number of output devices listed in the
       returned  array  of XineramaScreenInfo structures.  XineramaQueryScreens() returns NULL and sets number to 0 if
       Xinerama is not active.

       The pointer returned should be released with XFree(3) when no longer needed.

       The original API provided for interacting with the  XINERAMA  extension  used  function  names  beginning  with
       XPanoramiX.   That API is now deprecated and this API should be used instead in new software.

X Version 11                   libXinerama 1.1.3                   XINERAMA(3)