#include <QApplication>
#include <QGridLayout>
#include <QLabel>
#include <QPushButton>
#include <QVBoxLayout>
#include <QLineEdit>
#include <QTextEdit>
#include <QWidget>
#include <QCheckBox>
#include <QRadioButton>

QWidget* crearControl(int i, int j)
{
	static int tipo = rand() % 5;
	switch ( tipo )
	{
		case 0: return new QLabel( QString("Label (%1, %2)").arg(i + 1).arg(j + 1));
		case 1: return new QLineEdit( QString("LineEdit (%1, %2)").arg(i + 1).arg(j + 1));
		case 2: return new QTextEdit( QString("TextEdit (%1, %2)").arg(i + 1).arg(j + 1));
		case 3: return new QCheckBox( QString("Checkbox (%1, %2)").arg(i + 1).arg(j + 1));
		case 4: return new QRadioButton( QString("RadioButton (%1, %2)").arg(i + 1).arg(j + 1));
	}
	return 0;
}

int main(int argc, char* argv[])
{
	srand( time(0) );
	QApplication app(argc, argv);
	QWidget mainWindow;

	QVBoxLayout* mainLayout = new QVBoxLayout(&mainWindow);

	QGridLayout* gridLayout = new QGridLayout();
	mainLayout->addLayout( gridLayout );

	for ( int i = 0; i < 5; ++i )
		for ( int j = 0; j < 4; ++j )
			gridLayout->addWidget( crearControl(i,j), i, j );

	QPushButton* botonSalir = new QPushButton("Salir");
	mainLayout->addWidget( botonSalir );

	QObject::connect( botonSalir, SIGNAL(clicked()), &mainWindow, SLOT(close()) );

	mainWindow.show();
	return app.exec();
}