main.cpp Example File
tutorials/widgets/windowlayout/main.cpp

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 #include <QtGui>

 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
     QWidget window;
     QLabel *label = new QLabel(QApplication::translate("windowlayout", "Name:"));
     QLineEdit *lineEdit = new QLineEdit();

     QHBoxLayout *layout = new QHBoxLayout();
     layout->addWidget(label);
     layout->addWidget(lineEdit);
     window.setLayout(layout);
     window.setWindowTitle(
         QApplication::translate("windowlayout", "Window layout"));
     window.show();
     return app.exec();
 }