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NAME
     tt_session_prop - return the ith value of a session property

SYNOPSIS
     #include <Tt/tt_c.h>
     char *tt_session_prop(const char *sessid,
                           const char *propname,
                           int i);

DESCRIPTION
     The tt_session_prop() function returns the ith value of  the
     specified session property.

     The sessid argument is the name of the session joined.   The
     application   can   use   the  sessid  value  returned  when
     tt_default_session() is called.  The  propname  argument  is
     the  name  of  the  property  from  which  a  value is to be
     retrieved.  The name must be less  than  64  bytes.   The  i
     argument is the number of the item in the property name list
     for which the value is to be obtained.  The  list  numbering
     begins with zero.

RETURN VALUE
     Upon successful completion, the  tt_session_prop()  function
     returns the value of the requested property.  If there are i
     values or fewer, it returns NULL.  The application  can  use
     tt_ptr_error(3)  to  extract  one of the following Tt_status
     values from the returned pointer:

        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_NUM
                The integer value  passed  was  invalid  (out  of
                range).

        TT_ERR_PROPNAME
                The  specified  property  name  is  syntactically
                invalid.

        TT_ERR_SESSION
                The specified ToolTalk session is out of date  or
                invalid.

APPLICATION USAGE
     The application should  use  tt_free(3)  to  free  any  data
     stored in the address returned by the ToolTalk API.


     If the returned value has embedded nulls, it  is  impossible
     to  determine  how  long  it  is.   The  application can use
     tt_session_bprop(3) for values with embedded nulls.

SEE ALSO
     tt_c(5), tt_ptr_error(3), tt_free(3).

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