how to access the Member Variable of MainWindow from another class?

[mammaiap]

Hi Friends,

i am facing the following problem...

how i can access the variable which is declared in the mainwindow class from some other class?


code snippet:

class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
public:
         QList<int> cno_airfoilgeom;
        QList<int> sno_airfoilgeom;
 
};
 
class AirfoilGeomTab : public QWidget
{
    Q_OBJECT
 
public:
    AirfoilGeomTab(QWidget *parent = 0);
 
};
 
i wanted to use the "cno_airfoilgeom" variable in the "AirfoilGeomTab"  constructor...
 
AirfoilGeomTab::AirfoilGeomTab(QWidget *parent)
    : QWidget(parent)  
{
 
// i wanted to use the "cno_airfoilgeom" variable here
 
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
public:
         QList<int> cno_airfoilgeom;
        QList<int> sno_airfoilgeom;

};

class AirfoilGeomTab : public QWidget
{
    Q_OBJECT

public:
    AirfoilGeomTab(QWidget *parent = 0);

};

i wanted to use the "cno_airfoilgeom" variable in the "AirfoilGeomTab"  constructor...

AirfoilGeomTab::AirfoilGeomTab(QWidget *parent)
    : QWidget(parent)  
{

// i wanted to use the "cno_airfoilgeom" variable here

}

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can anyone please help me...?

Thanks in Advance,
mammaiap

[MarekR22]

This is basics of C++ and object oriented programing! Provide MainWindow method which will expose this field in safe way.

[Wong]

what relation between AirfoilGeomTab and MainWindow, parent is MainWindow in AirfoilGeomTab's constructor?
And i think you'd better write set get function

[mammaiap]

Hi Marek,

thanks for your immediate reply...

but can you please explain little bit more....with some code example?

Thanks in Advance

---

Added after 10 minutes:

Hi wong,

here i am attaching the source files

basically what i wanted is...

i am reading the input file and get some values....and store it in the container...

here(QList<int> cno_airfoilgeom) in mainwindow...

i wanted to use this value in some other class contructor...(class AirfoilGeomTab)..


i create a TabWidget which consist the "AirfoilGeomTab"...

thanks,