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NAME
     tt_pattern_register - register a pattern with  the  ToolTalk
     service

SYNOPSIS
     #include <Tt/tt_c.h>
     Tt_status tt_pattern_register(Tt_pattern p);

DESCRIPTION
     The tt_pattern_register() function registers a pattern  with
     the ToolTalk service.

     When the process is registered, it will start receiving mes-
     sages  that  match the specified pattern.  Once a pattern is
     registered, no further changes can be made in the pattern.

     When the process joins a session or file, the ToolTalk  ser-
     vice  updates  the  file and session field of its registered
     patterns.

     The p argument is a unique handle  for  a  message  pattern.
     This   handle  is  returned  after  tt_pattern_create(3)  is
     called.

RETURN VALUE
     Upon successful completion, the tt_pattern_register()  func-
     tion  returns the status of the operation as one of the fol-
     lowing Tt_status values:

        TT_OK   The operation completed successfully.

        TT_ERR_NOMP
                The ttsession(1) process is not running  and  the
                ToolTalk service cannot restart it.

        TT_ERR_POINTER
                The pointer passed does not point to an object of
                the correct type for this operation.

        TT_ERR_PROCID
                The specified process identifier is out  of  date
                or invalid.

SEE ALSO
     tt_c(5), tt_pattern_unregister(3), tt_pattern_create(3).

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