I designed a QMainWindow with QtCreator\'s designer. It consists of the default central widget (a QWidget) which contains a QVBo
If you want to do it with code instead of using QtCreator, you could set the layout in a QWidget and then set the QWidget as the central widget of the main window like this:
#include
#include
#include
#include "mainwindow.h"
MainWindow::MainWindow() {
// Set layout
QHBoxLayout *layout = new QHBoxLayout;
layout->addWidget(myWidget1);
layout->addWidget(myWidget2);
// Set layout in QWidget
QWidget *window = new QWidget();
window->setLayout(layout);
// Set QWidget as the central layout of the main window
setCentralWidget(window);
}