Qt Open Gl Programming in Netbeans IDE

[chintu]

I am trying out an opengl application in ubuntu 10.04 using NetBeans IDE.
The code is compiling perfectly but when running it, the application is giving a "segmentation fault". By debugging, I found that that the error is occurring in the constructor.
I have already enabled the OpenGl in the Netbeans IDE. A "hello world" program, which just shows the Hello world in a label is executing properly.
I give below some snippets of the code :

Main.cpp

read_file.getTestCase(test_case, test_data, ((randomize_pts == 'y') || (randomize_pts == 'Y') ? true : false));
    QApplication app(argc, argv);
 
    if(!QGLFormat::hasOpenGL()){
        std::cerr<<"The system has no opengl suppport"<<std::endl;
        return 1;
    }
 
    DrawTriangulation *drawtriangulation = new DrawTriangulation(test_data);
    drawtriangulation->show();

read_file.getTestCase(test_case, test_data, ((randomize_pts == 'y') || (randomize_pts == 'Y') ? true : false));
    QApplication app(argc, argv);

    if(!QGLFormat::hasOpenGL()){
        std::cerr<<"The system has no opengl suppport"<<std::endl;
        return 1;
    }
    
    DrawTriangulation *drawtriangulation = new DrawTriangulation(test_data);
    drawtriangulation->show();

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class DrawTriangulation : public QGLWidget {
    Q_OBJECT
 
private:
 
    vector <Point_2D> *mTestData;
    vector <Point_2D>::iterator mTestDataItr; 
    vector <Line *> *mLines; 
 
protected:
    void PrintLines(bool Mode);
    void initializeGL();
    void resizeGL(int w, int h);
    void paintGL();
 
public:
 
    DrawTriangulation(vector <Point_2D> *TestData, QWidget *parent=NULL);
 
};

class DrawTriangulation : public QGLWidget {
    Q_OBJECT

private:

    vector <Point_2D> *mTestData;
    vector <Point_2D>::iterator mTestDataItr; 
    vector <Line *> *mLines; 

protected:
    void PrintLines(bool Mode);
    void initializeGL();
    void resizeGL(int w, int h);
    void paintGL();

public:

    DrawTriangulation(vector <Point_2D> *TestData, QWidget *parent=NULL);

};

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The "Point_2D" is a tested class which is working.

The constructor is as :

DrawTriangulation::DrawTriangulation(vector <Point_2D> *TestData, QWidget *parent) : QGLWidget(parent) {
 
    mTestData = new vector <Point_2D >;
    mLines = new vector<Line *>;
 
     cout<<"hello world ... in const";
 
    mTestData->assign(TestData->begin(), TestData->end());
    setFormat(QGLFormat(QGL::DoubleBuffer | QGL::DepthBuffer));
};

DrawTriangulation::DrawTriangulation(vector <Point_2D> *TestData, QWidget *parent) : QGLWidget(parent) {

    mTestData = new vector <Point_2D >;
    mLines = new vector<Line *>;

     cout<<"hello world ... in const";

    mTestData->assign(TestData->begin(), TestData->end());
    setFormat(QGLFormat(QGL::DoubleBuffer | QGL::DepthBuffer));
};

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The debugging error is giving in the last line of "qglobal.h". The code stops running and points to ...

template<typename Enum>
class QFlags
{
    typedef void **Zero;
    int i;
public:
    typedef Enum enum_type;
    inline QFlags(const QFlags &f) : i(f.i) {}
    inline QFlags(Enum f) : i(f) {}
    inline QFlags(Zero = 0) : i(0) {}

template<typename Enum>
class QFlags
{
    typedef void **Zero;
    int i;
public:
    typedef Enum enum_type;
    inline QFlags(const QFlags &f) : i(f.i) {}
    inline QFlags(Enum f) : i(f) {}
    inline QFlags(Zero = 0) : i(0) {}

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Please help ....

[wysota]

Please post the full backtrace.