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PROPID_MGMT_QUEUE_MESSAGE_COUNT

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Applies To: Windows 10, Windows 7, Windows 8, Windows 8.1, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server Technical Preview, Windows Vista

(Read-only, introduced in MSMQ 3.0.) The PROPID_MGMT_QUEUE_MESSAGE_COUNT property returns the number of messages in the queue.

Property ID

PROPID_MGMT_QUEUE_MESSAGE_COUNT

Type Indicator

VT_UI4

MQPROPVARIANT Field

ulVal

Property Value

Number of messages in the queue.

Remarks

To retrieve the number of messages in the queue, include PROPID_MGMT_QUEUE_MESSAGE_COUNT T in the MQMGMTPROPS structure, call MQMgmtGetInfo, and then examine the value returned.

This property can be retrieved only for an active queue. MQMgmtGetInfo will return a non-specific error (MQ_ERROR) if your application attempts to retrieve the number of messages in a queue that does not contain messages and is not opened by an application.

Equivalent COM Property

When using COM components, you can determine the number of messages in a queue using the MSMQManagement.MessageCount property.

Example Code

The following code fragment shows how PROPID_MGMT_QUEUE_MESSAGE_COUNT is specified in arrays that can be used to initialize an MQMGMTPROPS structure.

aMgmtPropID[i] = PROPID_MGMT_QUEUE_MESSAGE_COUNT;    // Property identifier  
aMgmtPropVar[i].vt = VT_NULL;                        // Type indicator  
i++;

See Also

Management Properties
MQMgmtGetInfo
MSMQManagement.MessageCount