WhyCan Forum(哇酷开发者社区)

class GLWidget : public QOpenGLWidget, protected QOpenGLFunctions_ES2

{
    Q_OBJECT

public:
    explicit GLWidget(QWidget *parent = nullptr);
    ~GLWidget();

protected:
    void initializeGL() override;
    void resizeGL(int w, int h) override;
    void paintGL() override;

private:
    bool m_initialized;
    GLuint VBO, VAO;
};

    glGenVertexArrays(1, &VAO);

    glBindVertexArray(VAO);