The origin of the mixed use is probably due to existing overloaded methods of error() The solution is here: https://stackoverflow.com/questions/16794695/connecting-overloaded-signals-and-slots-in-qt-5
The origin of the mixed use is probably due to existing overloaded methods of error() The solution is here: https://stackoverflow.com/questions/16794695/connecting-overloaded-signals-and-slots-in-qt-5