#include "mainwindow.h"

#include <QStackedLayout>
#include <QStackedWidget>
#include <QMdiArea>
#include <QMdiSubWindow>
#include <QAction>
#include <QToolBar>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    QVBoxLayout *root = new QVBoxLayout;
    layout = new QStackedWidget;
    QMdiArea *mdi1 = new QMdiArea;
    mdi1->addSubWindow(new QMdiSubWindow);

    layout->addWidget(mdi1);

    QToolBar *toolBar = new QToolBar;
    QAction *addWindow = new QAction("New Window", this);

    toolBar->addAction(addWindow);

    connect(addWindow, SIGNAL(triggered()), this, SLOT(addwindow()));

    root->addWidget(toolBar);
    root->addWidget(layout);

    QWidget *w = new QWidget;
    w->setLayout(root);

    setCentralWidget(w);
}

MainWindow::~MainWindow()
{

}

void MainWindow::addwindow()
{
    QMdiArea *a = (QMdiArea *) layout->currentWidget();
    a->addSubWindow(new QMdiSubWindow);
}