# Listeners classes

class `pymeasure.display.listeners.``Monitor`(queue)

  Bases: `PyQt4.QtCore.QThread`

  Monitor listens for status and progress messages from a Worker through a queue to ensure no messages are losts

class `pymeasure.display.listeners.``QListener`(port, topic='', timeout=0.01)

  Bases: `pymeasure.display.thread.StoppableQThread`

  Base class for QThreads that need to listen for messages on a ZMQ TCP port and can be stopped by a thread- and process-safe method call