Inherited slot

  

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#ifndef WINDOW_H
#define WINDOW_H

#include <QPushButton>

//! [Button class with reimplemented slot]
class Button : public QPushButton
{
    Q_OBJECT

public:
    Button(QWidget *parent = 0);

public slots:
    void animateClick();
};
//! [Button class with reimplemented slot]

#endif






#include <QDebug>
#include "button.h"

Button::Button(QWidget *parent)
    : QPushButton(parent)
{
}

void Button::animateClick()
{
    qDebug() << "Extra code goes here...";
    QPushButton::animateClick();
}





#include <QApplication>
#include <QDebug>
#include <QHBoxLayout>
#include <QLineEdit>
#include <QMetaMethod>
#include <QWidget>
#include "button.h"

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QWidget window;
    QHBoxLayout *layout = new QHBoxLayout(&window);
    QLineEdit *lineEdit = new QLineEdit;
    Button *button = new Button;

    QObject::connect(lineEdit, SIGNAL(returnPressed()), button, SLOT(animateClick()));

    layout->addWidget(lineEdit);
    layout->addWidget(button);
    window.show();

    for (int i = 0; i < button->metaObject()->methodCount(); ++i)
        qDebug() << i << button->metaObject()->method(i).signature();
    return app.exec();
}
Related examples in the same category

1.	A Slot Responds to a Signal
2.	Qt signal test
3.	Qt signals and slots
4.	Quit Qt application
5.	Widget style
6.	QSignal mapper
7.	event filters
8.	Multi-event handlers
9.	Mark method with Q_INVOKABLE
Inherited slot : Signal « Qt « C++

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