Difference between revisions of "MQUNLINK()"

Revision as of 10:14, 5 July 2011

Purpose

Function to remove a message queue

Syntax

MQUNLINK(<expN>)

See Also

MQCLOSE(), MQCREATE(), MQCURMSGS(), MQOPEN(), MQRECEIVE(), MQSEND(), XML_DECODE(), XML_ENCODE(), XML_GATHER(), XML_SCATTER()

Description

The MQCLOSE() function is used to close an open message queue. The <expN> is the pointer to a queue opened with MQCREATE() or MQOPEN(). It returns .T. (true) if the queue is closed successfully. If an error occurs and it is unable to close the queue, it returns .F. (false) and the ERRNO() function can be checked to determine the error.

For more examples of handling message queues, please see the examples/mqueue programs in the software distribution.

Example

// Open up the queue for read/write access
mqdes=mqcreate("/myqueue2", 2)
if (mqdes < 0)
    messagebox(strerror()+",errno="+alltrim(str(error())))
    return
endif
// send a message to the queue
rc = mqsend(mqdes, "Test message")
if (rc < 0)
    messagebox(strerror()+",errno="+alltrim(str(error())))
    return
endif
mqclose(mqdes)

Products

Recital, Recital Server