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XCreateOC(3)                                   XLIB FUNCTIONS                                   XCreateOC(3)



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

SYNTAX
       XOC XCreateOC(XOM om);

       void XDestroyOC(XOC oc);

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

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

       XOM XOMOfOC(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 cre-ated created
       ated 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:

       •    A required argument was not set.

       •    A read-only argument was set.

       •    An argument name is not recognized.

       •    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:

       •    The argument is read-only.

       •    The argument name is not recognized.

       •    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 follow-ing following
       ing reasons:

       •    The argument name is not recognized.

       •    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



X Version 11                                    libX11 1.2.1                                    XCreateOC(3)