Qt signal with an enum as a parameter

Question

I\'m trying to pass an enum as a value to a slot in my program, but I\'m having some problems. In my header file I\'ve created the enum:

Q_ENUMS(button_type);
e         


        

Answer 1

Signal and Slot need to have the same parameters. What you want is a QSignalMapper.

edit: Here is an example from an application of mine. It creates 10 menu actions that each are connected to the same slot gotoHistoryPage but each called with a different int value.

m_forwardMenu = new QMenu();
for(int i = 1; i<=10; i++)
{
    QAction* action = m_forwardMenu->addAction(QString("%1").arg(i));
    m_forwardActions.push_back(action);
    m_signalMapper->setMapping(action, i);
    connect(action, SIGNAL(triggered()), m_signalMapper, SLOT(map()));
}
ui.forwardButton->setMenu(m_forwardMenu);
connect(m_signalMapper, SIGNAL(mapped(int)), this, SLOT(gotoHistoryPage(int)));