Plug & Paint Example

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#ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QDir> #include <QMainWindow> #include <QStringList> class QAction; class QActionGroup; class QMenu; class QScrollArea; class PaintArea; class MainWindow : public QMainWindow { Q_OBJECT public: MainWindow(); private slots: void open(); bool saveAs(); void brushColor(); void brushWidth(); void changeBrush(); void insertShape(); void applyFilter(); void about(); void aboutPlugins(); private: typedef void (MainWindow::*Member)(); void createActions(); void createMenus(); void loadPlugins(); void populateMenus(QObject *plugin); void addToMenu(QObject *plugin, const QStringList &texts, QMenu *menu, Member member, QActionGroup *actionGroup = nullptr); PaintArea *paintArea = nullptr; QScrollArea *scrollArea = nullptr; QDir pluginsDir; QStringList pluginFileNames; QMenu *fileMenu = nullptr; QMenu *brushMenu = nullptr; QMenu *shapesMenu = nullptr; QMenu *filterMenu = nullptr; QMenu *helpMenu = nullptr; QActionGroup *brushActionGroup = nullptr; QAction *openAct = nullptr; QAction *saveAsAct = nullptr; QAction *exitAct = nullptr; QAction *brushWidthAct = nullptr; QAction *brushColorAct = nullptr; QAction *aboutAct = nullptr; QAction *aboutQtAct = nullptr; QAction *aboutPluginsAct = nullptr; }; #endif