Passing an argument to a slot

Question

I want to override mouseReleaseEvent with a bunch of QActions and QMenus...

connect(action1, SIGNAL(triggered()), this, SLOT(onStepIncreased()));

connect(ac         


        

Answer 1

Maybe you can subclass QAction with an m_increase member variable.
Connect the triggered() signal to a slot on your new QAction subclass and emit a new signal (e.g. triggered(int number)) with the correct parameter.
e.g.

class MyAction:public QAction  
{  
public:  
    MyAction(int increase, ...)  
        :QAction(...), m_increase(increase)
    {  
        connect(this, SIGNAL(triggered()), this, SLOT(onTriggered()));  
    }  
protected Q_SLOTS:  
    void onTriggered()  
    {  
        emit triggered(m_increase);  
    }  

Q_SIGNALS:
    void triggered(int increase);   

private:  
    int m_increase;  
};