Connect signals with arguments

Using C++11 Lambdas As Qt Slots - qt connect signal to slot with parameter Qt's signals and slots mechanism ensures that if you connect a signal to a slot, the slot will be called with the signal's parameters at the right time qt connect signal to slot Qt automatically breaks a signalslot connection if either the sender or the receiver are destroyed (or if context object is destroyed, when

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