Qt Layout on QMainWindow

Question

I designed a QMainWindow with QtCreator's designer. It consists of the default central widget (a QWidget) which contains a QVBoxLayout with all the other widgets in it. Now everything I want, is that the QVBoxLayout automatically occupies the whole central widgets rectangle space.

How can I do this? I didn't find any usable property neither in the central widgets properties nor the QVBoxLayout's ones.

Answer 1

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 <QtGui> #include <QWidget> #include <QHBoxLayout> #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);  } 

Answer 2

You don't have to create a QVBoxLayout manually. Just select your central QWidget and press a make-layout button.