public virtual QAMessage * getMessageBySelectorTimeout(
     qa_const_string address,
    qa_const_string selector,
    qa_long timeout
)

The next QAMessage, or null if no message is available.

The address parameter specifies a local queue name. The address can be in the form 'store-id\queue-name' or 'queue-name'. If no message is available, this method waits for the specified timeout and then returns. Use this method to receive messages synchronously.

For more information about receiving messages asynchronously (using a message event handler), see Receiving messages asynchronously.