XCreateOC(3X11)

     NAME
          XCreateOC, XDestroyOC, XSetOCValues, XGetOCValues, XOMOfOC -
          create output contexts

     SYNTAX
          XOC XCreateOC(om, ...)
                XOM om;

          void XDestroyOC(oc)
                XOC oc;

          char * XSetOCValues(oc, ...)
                XOC oc;

          char * XGetOCValues(oc, ...)
                XOC oc;

          XOM XOMOfOC(oc)
                XOC oc;

     ARGUMENTS
          oc        Specifies the output context.

          om        Specifies the output method.

          ...       Specifies the variable length argument list to set
                    or get XOC values.

     DESCRIPTION
          The XCreateOC function creates an output context within the
          specified output method.

          The base font names argument is mandatory at creation time,
          and the output context will not be created unless it is
          provided.  All other output context values can be set later.

          XCreateOC returns NULL if no output context could be
          created.  NULL can be returned for any of the following
          reasons:

          o    A required argument was not set.

          o    A read-only argument was set.

          o    An argument name is not recognized.

          o    The output method encountered an output method
               implementation-dependent error.

          The XDestroyOC function destroys the specified output
          context.
          The XSetOCValues function returns NULL if no error occurred;
          otherwise, it returns the name of the first argument that
          could not be set.  An argument might not be set for any of
          the following reasons:

          o    The argument is read-only.

          o    The argument name is not recognized.

          o    An implementation-dependent error occurs.

          Each value to be set must be an appropriate datum, matching
          the data type imposed by the semantics of the argument.

          The XGetOCValues function returns NULL if no error occurred;
          otherwise, it returns the name of the first argument that
          could not be obtained.  An argument might not be obtained
          for any of the following reasons:

          o    The argument name is not recognized.

          o    An implementation-dependent error occurs.

          Each argument value following a name must point to a
          location where the value is to be stored.

          The XOMOfOC function returns the output method associated
          with the specified output context.

     SEE ALSO
          XCreateOM(3X11), XCreateFontSet(3X11)
          Xlib - C Language X Interface