Not able to Draw using QOpenGLWidget

summit

I have upgraded my project from QGLWidget to QOpenglWidget.

The project worked fine using QGL widget but now i am not able to see the rendered output.

class GLWidget : public  QOpenGLWidget
{
	Q_OBJECT;
public:
	explicit GLWidget(QWidget *parent = 0);
//	~GLWidget();
	void initializeGL() override;
	void paintGL() override;
	void resizeGL(int w, int h) override;
	QTimer timer;
	QElapsedTimer elapsedtimer;
	

private:
	int width;
	int height;

};

///////////////////////////////////////////////////////////////////////////////////
GLWidget::GLWidget(QWidget *parent) : QOpenGLWidget(parent)
{
	
}

//////////////////////////////////////////////////////////////////////////////////////////
void GLWidget::initializeGL() 
{
	GLenum GlewInitResult;
	glewExperimental = GL_TRUE;
	GlewInitResult = glewInit();
	if (GLEW_OK != GlewInitResult)   // Check if glew is initialized properly
	{
		QMessageBox msgBox;
		msgBox.setText("Not able to Initialize Glew");
		msgBox.exec();
	}

}
/////////////////////////////////////////////////////////////////////////////////////////////
void GLWidget::paintGL() 
{
  // Painting commands here which are opengl commands using GLEW.
     glBindFramebuffer(GL_FRAMEBUFFER, 0);	// Render in default framebuffer
     glClear(GL_COLOR_BUFFER_BIT);
     RenderCube();	

   
}
///////////////////////////////////////////////////////////////////////////////////////////

IN the Main function

QApplication application(argc, argv);

QSurfaceFormat format;
format.setDepthBufferSize(24);
format.setStencilBufferSize(8);
format.setVersion(3, 2);
format.setProfile(QSurfaceFormat::CoreProfile);
QSurfaceFormat::setDefaultFormat(format);

return application.exec();

SGaist

Hi,

Please provide a complete minimal compilable example that shows your issue.