NAME

tt_message_arg_val — return a pointer to the value of a message argument

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 service 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).