Passing overloaded pointer to member function signal as an argument to QObject::connect [duplicate]

Answer 1

You can cast inline:

QObject::connect(comboBox, static_cast<void (QComboBox::*)(int)>(&QComboBox::highlighted), [&]()-> void {
                             insertWidgetToMapAndSend(listView);
                         });

But starting with Qt 5.7, use qOverload:

QObject::connect(comboBox, qOverload<int>(&QComboBox::highlighted), [&]()-> void {
                             insertWidgetToMapAndSend(listView);
                         });

or QOverload in pre C++14:

QObject::connect(comboBox, QOverload<int>::of(&QComboBox::highlighted), [&]()-> void {
                             insertWidgetToMapAndSend(listView);
                         });