Update QwtPlot after create the plot object...

I've got my own plot class CDataPlot

Code:

---

class CDataPlot : public QwtPlot
{
    Q_OBJECT
 
public:
        CDataPlot(QWidget* parent = 0);
	virtual ~CDataPlot();
void					SetPlotConfiguration(const QString& title = "", const QString& curvetitle="", 
												const QString& xtitle = "", const QString& ytitle = "", 
												double xlen = 0.0, double ylen = 0.0);
};

---

In the constructor

Code:

---

CDataPlot::CDataPlot(QWidget* parent):QwtPlot(parent)
{
	setupQWTUi();
this->SetPlotConfiguration("This can !");    
 // I can update the title of the plot here. For sure, this is just the constructor of the plot !!!!
}

---

Then, I've got another class CObjectDetectionPlots

Code:

---

// Object detection figures
class CObjectDetectionPlots : public QMainWindow
{
	Q_OBJECT
 
public:
	CObjectDetectionPlots(QWidget *parent = 0, Qt::WFlags flags = 0);
	~CObjectDetectionPlots();
 
CDataPlot* m_pDataPlot;
};

---

In the constructor

Code:

---

CObjectDetectionPlots::CObjectDetectionPlots(QWidget *parent, Qt::WFlags flags)
	: QMainWindow(parent, flags)
{
	// private  ui
	m_pDataPlot			= new CDataPlot(this);
m_pDataPlot->SetPlotConfiguration("Can the title be updated?");     // no updating at all !!!
m_pDataPlot->replot();  // even if replot(), no use!!!!
ui.setupUi(this);
}

---

I just want to update the title of CDataPlot* m_pDataPlot; after having created the plot. Can I?
If so, how to do it?


As you can see, if I updated the title from within plot's constructor, I can get it done.
However, if I try to update the plot's title from outside, no updating at all !!!!!!!!!
Even if I use replot(), no use at all!!!


Please can anybody help to explain and give me a solution how will QWT update the plot after a plot object has been created??


Best Regards
JIA

You just need to call QwtPlot::setTitle?