tt_message_arg_xval(3)

NAME
     tt_message_arg_xval - retrieve and deserialize the data from a message
     argument

SYNOPSIS
     #include <Tt/tt_c.h>
     Tt_status tt_message_arg_xval(Tt_message m,
                                   int n,
                                   xdrproc_t xdr_proc,
                                   void **value);

DESCRIPTION
     The tt_message_arg_xval() function retrieves and deserializes the data
     from a message argument.  This function uses an XDR routine that is
     supplied by the client.

     The m argument is the opaque handle for the message involved in this
     operation.  The n argument is the number of the argument to be returned.
     The first argument is numbered zero.  The xdr_proc argument points to the
     XDR procedure to be used to deserialize the data in the nth argument into
     newly allocated storage, the address of which will be stored in the
     pointer whose address is value.

     The value argument is the data to be deserialized.

RETURN VALUE
     Upon successful completion, the tt_message_arg_xval() function returns
     the status of the operation as one of the following Tt_status values:

        TT_OK   The operation completed successfully.

        TT_ERR_MODE
                The specified Tt_mode is invalid.

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

        TT_ERR_XDR
                The XDR procedure failed on the given data, or evaluated to a
                zero-length structure.
APPLICATION USAGE
     The allocation calls are made by the XDR procedure; therefore, any
     storage allocated is not allocated from the ToolTalk allocation stack.
     The application should use the xdr_free(3) call to free this storage.

SEE ALSO
     Tttt_c(5); the .