XSGIvcQueryVersion(3)

     NAME
          XSGIvcQueryVersion - Check if the X server provides the
          XSGIvc extension

     SYNOPSIS
          #include <X11/extensions/XSGIvc.h>

          Status XSGIvcQueryVersion(Display *display,
              int *major,
              int *minor)

     PARAMETERS
          display   Specifies the connection to the X server.

          major     Returns the major version number of the extension
                    supported by the X server.

          minor     Returns the minor version number of the extension
                    supported by the X server.


     DESCRIPTION
          The function XSGIvcQueryVersion requests to the X server the
          major and minor version number of the XSGIvc protocol
          supported by the X server. If the XSGIvc library is
          compatible with the version returned by the server, this
          function returns True.  If the X server does not support the
          XSGIvc extension, or if there was an error during
          communication with the server, or if the server and library
          protocol versions are incompatible, this functions returns
          False.  No other XSGivc functions may be called before this
          function.  If a client violates this rule, the effects of
          all subsequent XSGIvc calls that it makes are undefined.


     SEE ALSO
          XSGIvc(3)