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50
51#ifndef MAINWINDOW_H
52#define MAINWINDOW_H
53
54#include <QMainWindow>
55#include "ui_mainwindow.h"
56
57class Document;
58
59class MainWindow : public QMainWindow, public Ui::MainWindow
60{
61 Q_OBJECT
62
63public:
64 MainWindow(QWidget *parent = nullptr);
65
66 void addDocument(Document *doc);
67 void removeDocument(Document *doc);
68 void setCurrentDocument(Document *doc);
69 Document *currentDocument() const;
70
71public slots:
72 void openDocument();
73 void saveDocument();
74 void closeDocument();
75 void newDocument();
76
77 void addShape();
78 void removeShape();
79 void setShapeColor();
80
81 void addSnowman();
82 void addRobot();
83
84 void about();
85 void aboutQt();
86
87private slots:
88 void updateActions();
89
90private:
91 QUndoGroup *m_undoGroup;
92
93 QString fixedWindowTitle(const Document *doc) const;
94};
95
96#endif // MAINWINDOW_H
97

source code of qtbase/examples/widgets/tools/undo/mainwindow.h