title: QThread sleeping on main thread
body: <p>I need to run QThread::usleep() on the main thread (for various reasons).<br>
  However, usleep is static protected.</p>
  
  <p>I'd like to use QThread's usleep function without a wrapper (I'm currently using unistd.h 's usleep), to fully embrace Qt, but not add additional complexity to the code.</p>
  
  <p>Is this possible? If so, what's the simplest (from point of view of a person reading the code) way to do so?</p>