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50
51#include <QtWidgets>
52
53void mainWindowExample()
54{
55 QMdiArea *mdiArea = new QMdiArea;
56//! [0]
57 QMainWindow *mainWindow = new QMainWindow;
58 mainWindow->setCentralWidget(mdiArea);
59//! [0]
60
61 mdiArea->addSubWindow(widget: new QPushButton("Push Me Now!"));
62
63 mainWindow->show();
64}
65
66void addingSubWindowsExample()
67{
68 QWidget *internalWidget1 = new QWidget;
69 QWidget *internalWidget2 = new QWidget;
70
71//! [1]
72 QMdiArea mdiArea;
73 QMdiSubWindow *subWindow1 = new QMdiSubWindow;
74 subWindow1->setWidget(internalWidget1);
75 subWindow1->setAttribute(Qt::WA_DeleteOnClose);
76 mdiArea.addSubWindow(widget: subWindow1);
77
78 QMdiSubWindow *subWindow2 =
79 mdiArea.addSubWindow(widget: internalWidget2);
80
81//! [1]
82 subWindow1->show();
83 subWindow2->show();
84
85 mdiArea.show();
86}
87

source code of qtbase/src/widgets/doc/snippets/mdiarea/mdiareasnippets.cpp