C++ GUI Programming with Qt 4

Chapter 18. Multithreading

• Creating Threads

• Synchronizing Threads

• Communicating with the Main Thread

• Using Qt’s Classes in Secondary Threads

Conventional GUI applications have one thread of execution and perform one operation at a time. If the user invokes a time-consuming operation from the user interface, the interface typically freezes while the operation is in progress. Chapter 7 (Event Processing) presents some solutions to this problem. Multi-threading is another solution.

In a multithreaded application, the GUI runs in its own thread and the processing takes place in one or more other threads. This results in applications that have responsive ...