tt_otype_hsig_arg_mode(3)

NAME
     tt_otype_hsig_arg_mode - return the mode of an argument of a request
     signature of an otype

SYNOPSIS
     #include <Tt/tt_c.h>
     Tt_mode tt_otype_hsig_arg_mode(const char *otype,
                                    int sig,
                                    int arg);

DESCRIPTION
     The tt_otype_hsig_arg_mode() function returns the mode of the argth
     argument of the sigth request signature of the given otype.

     The otype argument is the object type involved in this operation.  The
     sig argument is the zero-based index into the request signatures of the
     specified otype.  The arg argument is the zero-based index into the
     arguments of the specified signature.

RETURN VALUE
     Upon successful completion, the tt_otype_hsig_arg_mode() function returns
     a value that determines who (sender or handler) writes and reads a
     message argument.  The following modes are defined:

        TT_IN   The argument is written by the sender and read by the handler
                and any observers.

        TT_OUT
                The argument is written by the handler and read by the sender
                and any reply observers.

        TT_INOUT
                The argument is written by the sender and the handler and read
                by all.

     The application can use tt_int_error(3) to extract one of the following
     Tt_status values from the Tt_mode integer return value:

        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_OTYPE
                The specified object type is not the name of an installed
                object type.
SEE ALSO
     Tttt_c(5), tt_otype_hsig_arg_type(3), tt_otype_hsig_count(3),
     tt_otype_hsig_args_count(3), tt_otype_hsig_op(3), tt_int_error(3).