qt5base-lts/examples/opengl/textures/window.h

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#ifndef WINDOW_H
#define WINDOW_H

#include <QWidget>

class GLWidget;

class Window : public QWidget
{
    Q_OBJECT

public:
    Window();

private slots:
    void setCurrentGlWidget();
    void rotateOneStep();

private:
    enum { NumRows = 2, NumColumns = 3 };

    GLWidget *glWidgets[NumRows][NumColumns];
    GLWidget *currentGlWidget;
};

#endif