public function __construct()
{
parent::__construct();
$quit = new QPushButton(tr("&Quit"));
$quit->setFont(new QFont("Times", 18, QFont::Bold));
QObject::connect($quit, SIGNAL('clicked()'), QApplication::instance(), SLOT('quit()'));
$angle = new LCDRange();
$angle->setRange(5, 70);
$force = new LCDRange();
$force->setRange(10, 50);
$cannonField = new CannonField();
QObject::connect($angle, SIGNAL('valueChanged(int)'), $cannonField, SLOT('setAngle(int)'));
QObject::connect($cannonField, SIGNAL('angleChanged(int)'), $angle, SLOT('setValue(int)'));
QObject::connect($force, SIGNAL('valueChanged(int)'), $cannonField, SLOT('setForce(int)'));
QObject::connect($cannonField, SIGNAL('forceChanged(int)'), $force, SLOT('setValue(int)'));
$shoot = new QPushButton(tr("&Shoot"));
$shoot->setFont(new QFont("Times", 18, QFont::Bold));
QObject::connect($shoot, SIGNAL('clicked()'), $cannonField, SLOT('shoot()'));
$topLayout = new QHBoxLayout();
$topLayout->addWidget($shoot);
$topLayout->addStretch(1);
$leftLayout = new QVBoxLayout();
$leftLayout->addWidget($angle);
$leftLayout->addWidget($force);
$gridLayout = new QGridLayout();
$gridLayout->addWidget($quit, 0, 0);
$gridLayout->addLayout($topLayout, 0, 1);
$gridLayout->addLayout($leftLayout, 1, 0);
$gridLayout->addWidget($cannonField, 1, 1, 2, 1);
$gridLayout->setColumnStretch(1, 10);
$this->setLayout($gridLayout);
$angle->setValue(60);
$force->setValue(25);
$angle->setFocus();
}
public function __construct()
{
parent::__construct();
$quit = new QPushButton(tr("Quit"));
$quit->setFont(new QFont("Times", 18, QFont::Bold));
// QObject::connect($quit, SIGNAL('clicked()'), qApp(), SLOT('quit()'));
QObject::connect($quit, SIGNAL('clicked()'), QApplication::instance(), SLOT('quit()'));
$angle = new LCDRange();
$angle->setRange(5, 70);
$cannonField = new CannonField();
QObject::connect($angle, SIGNAL('valueChanged(int)'), $cannonField, SLOT('setAngle(int)'));
QObject::connect($cannonField, SIGNAL('angleChanged(int)'), $angle, SLOT('setValue(int)'));
$gridLayout = new QGridLayout();
$gridLayout->addWidget($quit, 0, 0);
$gridLayout->addWidget($angle, 1, 0);
$gridLayout->addWidget($cannonField, 1, 1, 2, 1);
$gridLayout->setColumnStretch(1, 10);
$this->setLayout($gridLayout);
$angle->setValue(60);
$angle->setFocus();
}