Hi everyone!

I'm a new member of forum and I'm a beginner with Qt. I searched in forum if somebody else had the same problem, but I found the solution only for the reverse problem.

My problem is the following:

I have a QMainWindow (Qsem2D) with some member data and with a button which when is clicked open a QDialog (SettingSolver) window that is a child of QMainWindow.

Qsem2D:

Qsem2D.h
Qt Code: 
  1. #include <QMainWindow>
  2.  
  3. class Qsem2d : public QMainWindow
  4. {
  5.     .....
  6. private:
  7.     bool *m_isForward;
  8.  
  9. signals:
  10.     void signalIsForward(bool i_isForward);
  11.  
  12. private slots:
  13.     void on_pushButton_clicked();
  14.  
  15.     void sendSignalToSettingSolver();
  16.  
  17.     .....
  18. }
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Qsem2D.cpp
Qt Code: 
  1. #include Qsem2D.h
  2. #include SolverSetting.h
  3.     ....
  4.  
  5. void Qsem2D::on_pushButton_clicked()
  6. {
  7.     sendSignalToSettingSolver();
  8.     SolverSetting *newWindow = new SolverSetting;
  9.     newWindow->show;
  10. }
  11.  
  12. void Qsem2D::sendSignalToSettingSolver()
  13. {
  14.     emit signalIsForward(*m_isForward);
  15. }
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SettingSolver:

SettingSolver.h
Qt Code: 
  1. #include "Qsem2D.h"
  2. #include <QDialog>
  3.  
  4. class SettingSolver : public QDialog
  5. {
  6. public:
  7.  
  8.     SettingSolver(Qsem2D *parent = 0);
  9.     ~SettingSolver();
  10.     .....
  11.  
  12. private:
  13.     bool *m_isForward;
  14.  
  15. private slots:
  16.  
  17.     void receiveSignalFromMainWindow(bool i_isForward);
  18. }
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SettingSolver.cpp
Qt Code: 
  1. #include "SettingSolver.h"
  2. #include <QDialog>
  3.  
  4. SettingSolver::SettingSolver(Qsem2D *parent):
  5.                       QDialog(parent),
  6.                       ui(new Ui::SettingSolver),
  7.                       m_isForward(new bool)
  8. {
  9.     .....
  10.     connect(parent,SIGNAL(signalIsForward),this,SLOT(receiveSignalFromMainWindow)
  11.     if(*m_isForward)
  12.     {
  13.        ....
  14.     }
  15.     .....
  16. }
  17.  
  18. void SolverSetting::receiveSignalFromMainWindow(bool i_isForward)
  19. {
  20.     *m_isForward = i_isForward;
  21. }
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The code could contain some errors because I don't have the original code handy but what I want understand is the concept.

My need is to pass the member data Qsem2D::m_isForward from MainWindow to member data SolverSetting::m_isForward (QDialog). For how the code is made now when I call the constructor for SolverSetting the member data SolverSetting::m_isForward is a pointer that points to memory allocation with no sense information instead I wish that it contains the value of Qsem2D::m_isForward.

What's wrong?

Thanks.

Regards.