Widgets in QGridLayout placed at top left

[anarion]

Hi, It's my first time trying Qt and followed the tutorials on widgets first, then the address book tutorial. My problem is with arranging widgets in a QGridLayout, I use proper row/column numbers but when I run the program, all of them are palced at top left.

/Here's the code\
adressbook.hpp:

#include <QWidget>
#include <QLineEdit>
#include <QTextEdit>
 
class address_book: public QWidget {
	Q_OBJECT
	QLineEdit name;
	QTextEdit address;
 
public:
	address_book(QWidget *parent=0);
};

#include <QWidget>
#include <QLineEdit>
#include <QTextEdit>

class address_book: public QWidget {
	Q_OBJECT
	QLineEdit name;
	QTextEdit address;

public:
	address_book(QWidget *parent=0);
};

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addressbook.cpp:

#include "addressbook.hpp"
#include <QLabel>
#include <QGridLayout>
 
address_book::address_book(QWidget *parent): QWidget(parent), name(), address() {
	QLabel lname(tr("Name:"));
	QLabel laddress(tr("Address:"));
 
	QGridLayout layout(this);
	layout.setSpacing(10);
 
	layout.addWidget(&lname, 0, 0);
	layout.addWidget(&name, 0, 1);
 
	layout.addWidget(&laddress, 1, 0);
	layout.addWidget(&address, 1, 1);
 
	setWindowTitle(tr("Address Book"));
}

#include "addressbook.hpp"
#include <QLabel>
#include <QGridLayout>

address_book::address_book(QWidget *parent): QWidget(parent), name(), address() {
	QLabel lname(tr("Name:"));
	QLabel laddress(tr("Address:"));

	QGridLayout layout(this);
	layout.setSpacing(10);

	layout.addWidget(&lname, 0, 0);
	layout.addWidget(&name, 0, 1);

	layout.addWidget(&laddress, 1, 0);
	layout.addWidget(&address, 1, 1);

	setWindowTitle(tr("Address Book"));
}

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Here's the screenshot:
app.jpg

What might be causing this behaviour?