signal qt from a non-qt thread, QueuedConnection

Question

I am signaling my Qt GUI thread from a boost::thread, and I am using a Qt::QueuedConnection,

 connect(src, SIGNAL(signal-signature), dest, SLOT(slot-signature),          


        

Answer 1

I would assume both threads need to be QThread with a QEventLoop to have that work.

Answer 2

Check whether the slot name and signal name are correct. Usually, if there is a problem (incorrect name), this is signaled in the console (an error message). Also, you could check the result of the connect function call. It should return false in case of connection unsuccessful.