tt_message_context_bval(3) ToolTalk Functions tt_message_context_bval(3)NAMEtt_message_context_bval - retrieve the byte-array value and length of a
message's context
SYNOPSIS
#include <Tt/tt_c.h>
Tt_status tt_message_context_bval(Tt_message m,
const char *slotname,
unsigned char **value,
int *len);
DESCRIPTION
The tt_message_context_bval() function retrieves the byte-array value
and length of a message's context.
If there is no context slot associated with slotname, tt_message_con‐
text_bval() returns a NULL pointer in slotname and zero in len.
The m argument is the opaque handle for the message involved in this
operation. The slotname argument describes the context of this mes‐
sage. The value argument points to the location to return the value.
The len argument is the length of the value in bytes.
RETURN VALUE
Upon successful completion, the tt_message_context_bval() function
returns the status of the operation as one of the following Tt_status
values:
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_POINTER
The pointer passed does not point to an object of the cor‐
rect type for this operation.
TT_ERR_SLOTNAME
The specified slotname is syntactically invalid.
SEE ALSOtt_c(5).
ToolTalk 1.3 1 March 1996 tt_message_context_bval(3)
