Qt 5.6 | Qt Widgets | MDI Example | mainwindow.h Example File

Qt 5.6.2 Reference Documentation

# mainwindow.h Example File

mainwindows/mdi/mainwindow.h

      /****************************************************************************
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      ** Copyright (C) 2015 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** You may use this file under the terms of the BSD license as follows:
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      #ifndef MAINWINDOW_H
      #define MAINWINDOW_H

      #include <QMainWindow>

      class MdiChild;
      class QAction;
      class QMenu;
      class QMdiArea;
      class QMdiSubWindow;

      class MainWindow : public QMainWindow
      {
          Q_OBJECT

      public:
          MainWindow();

          bool openFile(const QString &fileName);

      protected:
          void closeEvent(QCloseEvent *event) Q_DECL_OVERRIDE;

      private slots:
          void newFile();
          void open();
          void save();
          void saveAs();
          void updateRecentFileActions();
          void openRecentFile();
      #ifndef QT_NO_CLIPBOARD
          void cut();
          void copy();
          void paste();
      #endif
          void about();
          void updateMenus();
          void updateWindowMenu();
          MdiChild *createMdiChild();
          void switchLayoutDirection();

      private:
          enum { MaxRecentFiles = 5 };

          void createActions();
          void createStatusBar();
          void readSettings();
          void writeSettings();
          bool loadFile(const QString &fileName);
          static bool hasRecentFiles();
          void prependToRecentFiles(const QString &fileName);
          void setRecentFilesVisible(bool visible);
          MdiChild *activeMdiChild() const;
          QMdiSubWindow *findMdiChild(const QString &fileName) const;

          QMdiArea *mdiArea;

          QMenu *windowMenu;
          QAction *newAct;
          QAction *saveAct;
          QAction *saveAsAct;
          QAction *recentFileActs[MaxRecentFiles];
          QAction *recentFileSeparator;
          QAction *recentFileSubMenuAct;
      #ifndef QT_NO_CLIPBOARD
          QAction *cutAct;
          QAction *copyAct;
          QAction *pasteAct;
      #endif
          QAction *closeAct;
          QAction *closeAllAct;
          QAction *tileAct;
          QAction *cascadeAct;
          QAction *nextAct;
          QAction *previousAct;
          QAction *windowMenuSeparatorAct;
      };

      #endif