tt_message_xarg_add(library call) tt_message_xarg_add(library call)
NAME [Toc] [Back]
tt_message_xarg_add - add an argument with an XDR-interpreted value to
a message object
SYNOPSIS [Toc] [Back]
#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 [Toc] [Back]
The tt_message_xarg_add function adds an argument with an XDRinterpreted
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
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 vtype argument describes the type of argument data being added.
The xdr_proc argument points to the XDR procedure to be used to
serialize the data pointed to by value. The value argument is the data
to be serialized.
RETURN VALUE [Toc] [Back]
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.
- 1 - Formatted: January 24, 2005
tt_message_xarg_add(library call) tt_message_xarg_add(library call)
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_XDR
The XDR procedure failed on the given data, or evaluated to
a zero-length expression.
SEE ALSO [Toc] [Back]
Tt/tt_c.h - Tttt_c(5)
- 2 - Formatted: January 24, 2005 [ Back ] |
