Quote Originally Posted by numbat View Post
You're having the same problem as this post.
Sorry, I didn't notice that post.

Only the run function runs in the new thread. The worker object belongs to the thread it was created in, that is the GUI thread. Slots are executed in the thread that their object belongs to.
Ok, now I understand.

You can do either of two things. The first is to move ownership of the worker object to the newly created thread with a call to moveToThread(this). The other is to create your object in the run method so it belongs to the new thread as shown in the other post.
Thank you very much, I am going to experiment with your solutions.