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# mainwindow.h Example File
opengl/grabber/mainwindow.h

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        #ifndef MAINWINDOW_H
        #define MAINWINDOW_H

        #include <QMainWindow>

        class QAction;
        class QLabel;
        class QMenu;
        class QScrollArea;
        class QSlider;
        class GLWidget;

        class MainWindow : public QMainWindow
        {
            Q_OBJECT

        public:
            MainWindow();

        private slots:
            void renderIntoPixmap();
            void grabFrameBuffer();
            void clearPixmap();
            void about();

        private:
            void createActions();
            void createMenus();
            QSlider *createSlider(const char *changedSignal, const char *setterSlot);
            void setPixmap(const QPixmap &pixmap);
            QSize getSize();

            QWidget *centralWidget;
            QScrollArea *glWidgetArea;
            QScrollArea *pixmapLabelArea;
            GLWidget *glWidget;
            QLabel *pixmapLabel;
            QSlider *xSlider;
            QSlider *ySlider;
            QSlider *zSlider;

            QMenu *fileMenu;
            QMenu *helpMenu;
            QAction *grabFrameBufferAct;
            QAction *renderIntoPixmapAct;
            QAction *clearPixmapAct;
            QAction *exitAct;
            QAction *aboutAct;
            QAction *aboutQtAct;
        };

        #endif