C++/Qt - QThread vs QRunnable

Question

What are the differences between QThreads and QRunnable ?

When should I use QThread and when QRunnable ?

Answer 1

The QRunnable class and the QtConcurrent::run() function are well suited to situations where we want to perform some background processing in one or more secondary threads without needing the full power and flexibility provided by QThread.

from "Advanced Qt Programming: Creating Great Software with C++ and Qt 4" by Mark Summerfield