mainwindow.h Example File
^{itemviews/puzzle/mainwindow.h}

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    ** This file is part of the documentation of the Qt Toolkit.
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    #ifndef MAINWINDOW_H
    #define MAINWINDOW_H

    #include <QPixmap>
    #include <QMainWindow>

    class PuzzleWidget;
    class QListView;

    class MainWindow : public QMainWindow
    {
        Q_OBJECT

    public:
        MainWindow(QWidget *parent = 0);

    public slots:
        void openImage(const QString &path = QString());
        void setupPuzzle();

    private slots:
        void setCompleted();

    private:
        void setupMenus();
        void setupWidgets();

        QPixmap puzzleImage;
        QListView *piecesList;
        PuzzleWidget *puzzleWidget;
    };

    #endif