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#include <QCheckBox>

#include <QMouseEvent>

class MyCheckBox : public QCheckBox

{

public:

    void mousePressEvent(QMouseEvent *event);

};

//! [0]

void MyCheckBox::mousePressEvent(QMouseEvent *event)

{

    if (event->button() == Qt::LeftButton) {

        // handle left mouse button here

    } else {

        // pass on other buttons to base class

        QCheckBox::mousePressEvent(event);

    }

}

//! [0]

class MyWidget : public QWidget

{

public:

    bool event(QEvent *event);

};

static const int MyCustomEventType = 1099;

class MyCustomEvent : public QEvent

{

public:

    MyCustomEvent() : QEvent((QEvent::Type)MyCustomEventType) {}

};

//! [1]

bool MyWidget::event(QEvent *event)

{

    if (event->type() == QEvent::KeyPress) {

	QKeyEvent *ke = static_cast<QKeyEvent *>(event);

	if (ke->key() == Qt::Key_Tab) {

	    // special tab handling here

	    return true;

	}

    } else if (event->type() == MyCustomEventType) {

	MyCustomEvent *myEvent = static_cast<MyCustomEvent *>(event);

	// custom event handling here

	return true;

    }

    return QWidget::event(event);

}

//! [1]

int main()

{

}