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ID		Creation date	28 December 2008
Platform	S60 3rd Edition, S60 5th Edition	Tested on devices	Emulator
Category	Qt for Symbian	Subcategory	Form layout

Keywords (APIs, classes, methods, functions): QVBoxLayout,QHBoxLayout

Code

#include <QApplication>
#include <QPushButton>
#include <QVBoxLayout>
 
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
 
    // win is the top level widget
    QWidget win;
    QVBoxLayout* layout = new QVBoxLayout(&win);
 
    // This button show the top level widget in a normal size
    QPushButton* normalSizeButton = new QPushButton("Normal size");
    QObject::connect(normalSizeButton, SIGNAL(clicked()), &win, SLOT(showNormal()));
    layout->addWidget(normalSizeButton);
 
    // This button maximize the widget size
    QPushButton* maximzeButton = new QPushButton("Maximize");
    QObject::connect(maximzeButton, SIGNAL(clicked()), &win, SLOT(showMaximized()));
    layout->addWidget(maximzeButton);
 
    // This button exit the application
    QPushButton* exitButton = new QPushButton("Exit");
    QObject::connect(exitButton, SIGNAL(clicked()), &app, SLOT(quit()));
    layout->addWidget(exitButton);
 
    win.show(); // show the top level widget
    return app.exec(); // start the event loop
}

Output after clicking on Normal Size

Output after clicking on maximize