nq_ctx

Message submission to copy the message data to. nq_ctx must be an enqueue context created by mtaEnqueueStart().

dq_ctx

Queued message to copy the message data from. Must be a a dequeue context created by mtaDequeueStart().

rewind

Supply a value of 1 to move the read point in the queued message file to the start of the message before commencing the copy operation. Supply a value of zero to leave the message read point unchanged before copying.