Difference between revisions of "MQCURMSGS()"

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==See Also==
 
==See Also==
[[MQCLOSE()]], [[MQCREATE()]], [[MQOPEN()]], [[MQRECEIVE()]], [[MQSEND()]]
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[[MQCLOSE()]], [[MQCREATE()]], [[MQOPEN()]], [[MQRECEIVE()]], [[MQSEND()]], [[MQUNLINK()]], [[XML_DECODE()]], [[XML_ENCODE()]], [[XML_GATHER()]], [[XML_SCATTER()]]
  
  
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The MQCLOSE() function is used to close a queue which has been opened with MQOPEN() or MQCREATE().
 
The MQCLOSE() function is used to close a queue which has been opened with MQOPEN() or MQCREATE().
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For more examples of handling message queues, please see the examples/mqueue programs in the software distribution.
  
  

Latest revision as of 10:09, 5 July 2011

Purpose

Return the number of unread messages in the specified queue


Syntax

MQCURMSGS(<expN>)


See Also

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


Description

The MQCURMSGS() function returns the current number of unread messages in the open queue specified by <expN>. The <expN> is the pointer to a queue opened with MQCREATE() or MQOPEN().

The MQCLOSE() function is used to close a queue which has been opened with MQOPEN() or MQCREATE().

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


Example

// Open up the queue for reading
mqdes=mqopen("/myqueue")
if (mqdes < 0)
    messagebox(strerror()+",errno="+alltrim(str(error())))
    return
endif
// do while there are messages
do while (mqcurmsgs(mqdes) > 0)
    // Get each message
    mstr=mqreceive(mqdes)
    if (empty(mstr))
        messagebox(strerror()+",errno="+alltrim(str(error())))
        return
    endif
    messagebox(mstr)
enddo
mqclose(mqdes)


Products

Recital, Recital Server