Classes that are restricted to the GUI thread

[Asperamanca]

The article about "GUI thread and worker thread":http://developer.qt.nokia.com/doc/qt-4.8/thread-basics.html#gui-thread-and-worker-thread
simply states:
"All widgets and several related classes, for example QPixmap, don't work in secondary threads."

Where can I find a definite list of classes that are restricted to the GUI thread?

[dangelog]

I don't think there's one, but see http://developer.qt.nokia.com/doc/qt-4.8/threads-modules.html