tt_message_arg_val(library call) tt_message_arg_val(library call)
NAMEtt_message_arg_val — return a pointer to the value of a message argu‐
ment
SYNOPSIS
#include <Tt/tt_c.h>
char *tt_message_arg_val(
Tt_message m,
int n);
DESCRIPTION
The tt_message_arg_val function returns a pointer to the value of the
nth message argument.
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.
RETURN VALUE
Upon successful completion, the tt_message_arg_val function returns the
contents for the message argument. 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 ser‐
vice cannot restart it.
TT_ERR_NUM
The integer value passed was invalid (out of range).
TT_ERR_POINTER
The pointer passed does not point to an object of the correct
type for this operation.
APPLICATION USAGE
The application can use tt_free(3) to free any data stored in the
address returned by the ToolTalk API.
SEE ALSO
Tt/tt_c.h - Tttt_c(5), tt_ptr_error(3), tt_free(3).
tt_message_arg_val(library call)
