error values

Macros
#define	ERR_OPCPIPE_OK   0
	no error occured
#define	ERR_OPCPIPE_NOT_INITIALIZED   1
	library not initialized correctly
#define	ERR_OPCPIPE_ALREADY_INITIALIZED   2
	library already initialized
#define	ERR_OPCPIPE_NUMBER_EXHAUSTED   3
	too many connections
#define	ERR_OPCPIPE_BAD_HANDLE   4
	wrong handle given in call
#define	ERR_OPCPIPE_MEMERR   5
	memory allocation error
#define	ERR_OPCPIPE_BAD_RIGHTS   6
	access rights wrong
#define	ERR_OPCPIPE_BAD_ITEMHANDLE   7
	itemhandle wrong
#define	ERR_OPCPIPE_BAD_ITEMSYNTAX   8
	itemsyntax wrong ("will never work")
#define	ERR_OPCPIPE_ITEM_UNKNOWN   9
	item doesn't exist; itemsyntax (possibly) correct ("doesn't work now, maybe works later")
#define	ERR_OPCPIPE_BAD_TOPICPATH   10
	topic name wrong
#define	ERR_OPCPIPE_DUPLICATENAME   12
	name duplicate
#define	ERR_OPCPIPE_BAD_SESSION   13
	used for circumventing bugs in some UA servers
#define	ERR_OPCPIPE_BAD_PASSWORD   20
	password wrong
#define	ERR_OPCPIPE_BAD_PARAMETERS   21
	parameters wrong
#define	ERR_OPCPIPE_BAD_OPCODE   22
	opcode wrong or not implemented
#define	ERR_OPCPIPE_BAD_TOPICHANDLE   23
	topic handle wrong
#define	ERR_OPCPIPE_BAD_NETPARAMS   24
	network parameters wrong
#define	ERR_OPCPIPE_WAIT   25
	request not completed yet, answer will arrive asynchrnously
#define	ERR_OPCPIPE_IS_INACTIVE   26
	operation not possible on inactive item
#define	ERR_OPCPIPE_TRY_AGAIN   27
	try again later
#define	ERR_OPCPIPE_CONNECTION   28
	conection failure
#define	ERR_OPCPIPE_ITEMDATA_DROPPED   29
	data dropped because of error or stall
#define	ERR_OPCPIPE_SYNTAXINVALID   30
	data syntax invalid
#define	ERR_OPCPIPE_SYNTAXWARN   31
	data syntax possibly wrong
#define	ERR_OPCPIPE_ACKMODE   32
	data_ack mode enabled on other side
#define	ERR_OPCPIPE_IS_ACTIVE   33
	operation not possible on active item
#define	ERR_OPCPIPE_BAD_ARRAYINDEX   34
	array index format bad
#define	ERR_OPCPIPE_ARRAYINDEX_OUT_OF_RANGE   35
	array index out of range
#define	ERR_OPCPIPE_STRUCTURE_MISSING   36
	the structure is missed
#define	ERR_OPCPIPE_NO_PREFIX   37
	for redirect confirm: value is not a prefix, thus not useable for browsing

Detailed Description