tt_message_xarg_add - interpreted value to a message object
#include <Tt/tt_c.h> Tt_status tt_message_xarg_add(Tt_message m, Tt_mode n, const char *vtype, xdrproc_t xdr_proc, void *value);
tt_message_xarg_add(3) ToolTalk Functions tt_message_xarg_add(3) NAME tt_message_xarg_add - add an argument with an XDR-interpreted value to a message object SYNOPSIS #include <Tt/tt_c.h> Tt_status tt_message_xarg_add(Tt_message m, Tt_mode n, const char *vtype, xdrproc_t xdr_proc, void *value); DESCRIPTION The tt_message_xarg_add() function adds an argument with an XDR-inter- preted value to a message object. To change existing argument values, the application must use only modes TT_OUT or TT_INOUT. Adding arguments when replying to a message produces undefined results. The m argument is the opaque handle for the message involved in this operation. The n argument specifies who (sender, handler, observers) writes and reads a message argument. The following modes are defined: TT_IN The argument is written by the sender and read by the han- dler 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 vtype argument describes the type of argument data being added. The xdr_proc argument points to the XDR procedure to be used to serial- ize the data pointed to by value. The value argument is the data to be serialized. RETURN VALUE Upon successful completion, the tt_message_xarg_add() 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 cor- rect type for this operation. TT_ERR_XDR The XDR procedure failed on the given data, or evaluated to a zero-length expression. ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------+ |Availability | library/tooltalk | +---------------+------------------+ |Stability | Committed | +---------------+------------------+ SEE ALSO tt_c(5). ToolTalk 1.3 1 March 1996 tt_message_xarg_add(3)