#include <QtGui>

int main (int argc, char* argv[])
{
	QApplication app (argc, argv);

	QDialog mainWindow;
	QVBoxLayout* layout = new QVBoxLayout(&mainWindow);
	QComboBox* cb1 = new QComboBox(&mainWindow);
	QLineEdit* edit1 = new QLineEdit("hello", &mainWindow);
	QLineEdit* edit2 = new QLineEdit("there", &mainWindow);
	layout->addWidget(cb1);
	layout->addWidget(edit1);
	layout->addWidget(edit2);
	edit1->clear();
	edit2->clear();

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