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50
51#ifndef MAINWINDOW_H
52#define MAINWINDOW_H
53
54#include <QMainWindow>
55
56class MdiChild;
57QT_BEGIN_NAMESPACE
58class QAction;
59class QMenu;
60class QMdiArea;
61class QMdiSubWindow;
62QT_END_NAMESPACE
63
64class MainWindow : public QMainWindow
65{
66 Q_OBJECT
67
68public:
69 MainWindow();
70
71 bool openFile(const QString &fileName);
72
73protected:
74 void closeEvent(QCloseEvent *event) override;
75
76private slots:
77 void newFile();
78 void open();
79 void save();
80 void saveAs();
81 void updateRecentFileActions();
82 void openRecentFile();
83#ifndef QT_NO_CLIPBOARD
84 void cut();
85 void copy();
86 void paste();
87#endif
88 void about();
89 void updateMenus();
90 void updateWindowMenu();
91 MdiChild *createMdiChild();
92 void switchLayoutDirection();
93
94private:
95 enum { MaxRecentFiles = 5 };
96
97 void createActions();
98 void createStatusBar();
99 void readSettings();
100 void writeSettings();
101 bool loadFile(const QString &fileName);
102 static bool hasRecentFiles();
103 void prependToRecentFiles(const QString &fileName);
104 void setRecentFilesVisible(bool visible);
105 MdiChild *activeMdiChild() const;
106 QMdiSubWindow *findMdiChild(const QString &fileName) const;
107
108 QMdiArea *mdiArea;
109
110 QMenu *windowMenu;
111 QAction *newAct;
112 QAction *saveAct;
113 QAction *saveAsAct;
114 QAction *recentFileActs[MaxRecentFiles];
115 QAction *recentFileSeparator;
116 QAction *recentFileSubMenuAct;
117#ifndef QT_NO_CLIPBOARD
118 QAction *cutAct;
119 QAction *copyAct;
120 QAction *pasteAct;
121#endif
122 QAction *closeAct;
123 QAction *closeAllAct;
124 QAction *tileAct;
125 QAction *cascadeAct;
126 QAction *nextAct;
127 QAction *previousAct;
128 QAction *windowMenuSeparatorAct;
129};
130
131#endif
132

source code of qtbase/examples/widgets/mainwindows/mdi/mainwindow.h