Connect signal to slot with derived parameter

In debug mode we also annotate the string with the file location for a warning message if the signal connection did not work This was added in

There are several advantages to using QObject::connect() with function pointers First, it allows the compiler to check that the signal's arguments are

qt connect signal to slot Signals are connected to slots using the connect() method of a bound signal connect (slot

qt connect signal slot Create a new QSignalMapper object · Connect the triggered slots of the actions to the mapper's map slot · Let the mapper know via setMapping