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tt_open(3)
CDE


NAME
  tt_open - return the process identifier for the calling process

SYNOPSIS
  #include <Tt/tt_c.h>
  char *tt_open(void);

DESCRIPTION
  The tt_open function returns the process identifier for the calling
  process.

RETURN VALUE
  The tt_open function also sets this identifier as the default procid for
  the process.	The tt_open3 function is typically the first ToolTalk
  function called by a process.

  The application must call tt_open3 before other tt_ calls are made.
  However, there are two exceptions: tt_default_session_set3 and
  tt_X_session3 can be called before tt_open.

  A process can call tt_open more than once to obtain multiple procids.	 To
  open another session, the process must make the following calls in the
  order specified:

       tt_default_session_set3
       tt_open

RETURN VALUE
  Upon successful completion, the tt_open function returns the character
  value that uniquely identifies the process.  The application can use
  tt_ptr_error3 to extract one of the following Tt_status values from the
  returned pointer: The operation completed successfully.
  The ttsession1 process is not running and the ToolTalk service cannot
  restart it.

APPLICATION USAGE
  The application should use tt_free3 to free any data stored in the address
  returned by the ToolTalk API.

  Each procid has its own associated file descriptor, and can join another
  session.  To switch to another procid, the application should call
  tt_default_procid_set.




SEE ALSO
  Tt/tt_c.h5, tt_fd3, tt_default_procid3, tt_default_procid_set3,
  tt_default_session3, tt_default_session_set3, tt_ptr_error3, tt_free3.