putting QTableWidgetItem (s) in a boolean array

[hichemnho]

Thank you for your response,
val receives finally the value filled in the QTablWidget but there are an error that occured while the instruction of debugg is executed :QTableWidget: cannot insert an item that is already owned by another QTableWidget

//le header
#ifndef FENPRINCIPALE_H
#define FENPRINCIPALE_H
#include <QtGui>
#include <vector>
class FenPrincipale : public QWidget
{
    Q_OBJECT
public:
    FenPrincipale();
    bool  M[2][2];
 
private slots:
    void FillIn();
private:
    QTableWidget  *tabM;
    //QTableWidgetItem *it;
    QPushButton * generer;
    QVBoxLayout * vbox;
};
#endif
 
//FenPrincipale.cpp
#include "qDebug.h"
#include "FenPrincipale.h"
FenPrincipale::FenPrincipale()
{
 
   // QTableWidget *tabM =new QTableWidget(this);
    tabM =new QTableWidget(this);
    tabM->setRowCount(2);
    tabM->setColumnCount(2);
    generer = new QPushButton("&Générer !",this);
   // generer->move(50,50);
    QVBoxLayout* vbox = new QVBoxLayout();
    vbox->addWidget(generer);
       vbox->addWidget(tabM);
       this->setLayout(vbox);
 
for (int r = 0; r < 2; r++) {
        for (int c = 0; c < 2; c++) {
 
            QTableWidgetItem *it = new QTableWidgetItem;
            tabM->setItem(r, c, it);
            it->setData(Qt::EditRole, 0);
            //qDebug() <<it;
        }
    }
 
    connect(generer, SIGNAL(clicked()), this, SLOT(FillIn()));
}
void FenPrincipale::FillIn()
{
    for (int r = 0; r < 2; r++) {
        for (int c = 0; c < 2; c++) {
            QTableWidgetItem *it =new QTableWidgetItem;
 
     it = tabM->item(r,c);
 
            Q_ASSERT(it);
 
            it=(tabM->item(r,c));
            tabM->setItem(r, c, it);
            qDebug() <<it;
            int val = (it->data(Qt::EditRole)).toInt();
            M[r][c] = (val == 1)? true: false;
 
            qDebug() <<M[r][c];
        }
    }
}
 
 
 
//main.cpp
 
 
#include <QApplication>
#include "FenPrincipale.h"
int main(int argc, char* argv[])
{
QApplication app(argc, argv);
 
FenPrincipale fenetre;
fenetre.show();
return app.exec();
}

//le header
#ifndef FENPRINCIPALE_H
#define FENPRINCIPALE_H
#include <QtGui>
#include <vector>
class FenPrincipale : public QWidget
{
    Q_OBJECT
public:
    FenPrincipale();
    bool  M[2][2];
 
private slots:
    void FillIn();
private:
    QTableWidget  *tabM;
    //QTableWidgetItem *it;
    QPushButton * generer;
    QVBoxLayout * vbox;
};
#endif
 
//FenPrincipale.cpp
#include "qDebug.h"
#include "FenPrincipale.h"
FenPrincipale::FenPrincipale()
{
 
   // QTableWidget *tabM =new QTableWidget(this);
    tabM =new QTableWidget(this);
    tabM->setRowCount(2);
    tabM->setColumnCount(2);
    generer = new QPushButton("&Générer !",this);
   // generer->move(50,50);
    QVBoxLayout* vbox = new QVBoxLayout();
    vbox->addWidget(generer);
       vbox->addWidget(tabM);
       this->setLayout(vbox);
 
for (int r = 0; r < 2; r++) {
        for (int c = 0; c < 2; c++) {
 
            QTableWidgetItem *it = new QTableWidgetItem;
            tabM->setItem(r, c, it);
            it->setData(Qt::EditRole, 0);
            //qDebug() <<it;
        }
    }
 
    connect(generer, SIGNAL(clicked()), this, SLOT(FillIn()));
}
void FenPrincipale::FillIn()
{
    for (int r = 0; r < 2; r++) {
        for (int c = 0; c < 2; c++) {
            QTableWidgetItem *it =new QTableWidgetItem;
 
     it = tabM->item(r,c);
 
            Q_ASSERT(it);
 
            it=(tabM->item(r,c));
            tabM->setItem(r, c, it);
            qDebug() <<it;
            int val = (it->data(Qt::EditRole)).toInt();
            M[r][c] = (val == 1)? true: false;
 
            qDebug() <<M[r][c];
        }
    }
}
 
 
 
//main.cpp
 
 
#include <QApplication>
#include "FenPrincipale.h"
int main(int argc, char* argv[])
{
QApplication app(argc, argv);
 
FenPrincipale fenetre;
fenetre.show();
return app.exec();
}

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Could you please help me find out the where the problem is beacause even if I create an QTableWidgetItem for every (r,c) the problem remains.
Thank you in advance for your help.

[hichemnho]

The problem is solved by erazing some useless lines .
Here is the code:

//header
#ifndef FENPRINCIPALE_H
#define FENPRINCIPALE_H
 
#include <QtGui>
 
class FenPrincipale : public QWidget
{
    Q_OBJECT
 
public:
    FenPrincipale();
    bool  M[2][2];
 
private slots:
    void FillIn();
 
private:
    QTableWidget *tabM;
    QPushButton *generer;
};
 
#endif
 
 
//FenPrincipale.cpp
#include <QDebug>
#include "FenPrincipale.h"
 
FenPrincipale::FenPrincipale()
{
    tabM =new QTableWidget(2, 2, this);
    generer = new QPushButton("&Générer !",this);
    QVBoxLayout *vbox = new QVBoxLayout;
    vbox->addWidget(generer);
    vbox->addWidget(tabM);
    setLayout(vbox);
 
    for (int r = 0; r < tabM->rowCount(); r++) {
        for (int c = 0; c < tabM->columnCount(); c++) {
            QTableWidgetItem *it = new QTableWidgetItem;
            tabM->setItem(r, c, it);
            it->setData(Qt::EditRole, 0);
        }
    }
 
    connect(generer, SIGNAL(clicked()), this, SLOT(FillIn()));
}
 
void FenPrincipale::FillIn()
{
    for (int r = 0; r < tabM->rowCount(); r++) {
        for (int c = 0; c < tabM->columnCount(); c++) {
            QTableWidgetItem *it = tabM->item(r,c);
            Q_ASSERT(it);
            qDebug() << it;
            int val = (it->data(Qt::EditRole)).toInt();
            M[r][c] = (val == 1) ? true : false;
            qDebug() << M[r][c];
        }
    }
}
 
 
//main.cpp
#include <QApplication>
#include "FenPrincipale.h"
 
int main(int argc, char* argv[])
{
    QApplication app(argc, argv);
 
    FenPrincipale fenetre;
    fenetre.show();
    return app.exec();
}

//header
#ifndef FENPRINCIPALE_H
#define FENPRINCIPALE_H
 
#include <QtGui>
 
class FenPrincipale : public QWidget
{
    Q_OBJECT
 
public:
    FenPrincipale();
    bool  M[2][2];
 
private slots:
    void FillIn();
 
private:
    QTableWidget *tabM;
    QPushButton *generer;
};
 
#endif
 
 
//FenPrincipale.cpp
#include <QDebug>
#include "FenPrincipale.h"
 
FenPrincipale::FenPrincipale()
{
    tabM =new QTableWidget(2, 2, this);
    generer = new QPushButton("&Générer !",this);
    QVBoxLayout *vbox = new QVBoxLayout;
    vbox->addWidget(generer);
    vbox->addWidget(tabM);
    setLayout(vbox);
 
    for (int r = 0; r < tabM->rowCount(); r++) {
        for (int c = 0; c < tabM->columnCount(); c++) {
            QTableWidgetItem *it = new QTableWidgetItem;
            tabM->setItem(r, c, it);
            it->setData(Qt::EditRole, 0);
        }
    }
 
    connect(generer, SIGNAL(clicked()), this, SLOT(FillIn()));
}
 
void FenPrincipale::FillIn()
{
    for (int r = 0; r < tabM->rowCount(); r++) {
        for (int c = 0; c < tabM->columnCount(); c++) {
            QTableWidgetItem *it = tabM->item(r,c);
            Q_ASSERT(it);
            qDebug() << it;
            int val = (it->data(Qt::EditRole)).toInt();
            M[r][c] = (val == 1) ? true : false;
            qDebug() << M[r][c];
        }
    }
}
 
 
//main.cpp
#include <QApplication>
#include "FenPrincipale.h"
 
int main(int argc, char* argv[])
{
    QApplication app(argc, argv);
 
    FenPrincipale fenetre;
    fenetre.show();
    return app.exec();
}

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Thank you all for your help , I really apreciate it .
Thank you again .

hello,
The problem is solved erazing some useless lines.
Here is the code:

//header
#ifndef FENPRINCIPALE_H
#define FENPRINCIPALE_H
 
#include <QtGui>
 
class FenPrincipale : public QWidget
{
    Q_OBJECT
 
public:
    FenPrincipale();
    bool  M[2][2];
 
private slots:
    void FillIn();
 
private:
    QTableWidget *tabM;
    QPushButton *generer;
};
 
#endif
 
 
 
 
 
 
//FenPrincipale.cpp
#include <QDebug>
#include "FenPrincipale.h"
 
FenPrincipale::FenPrincipale()
{
    tabM =new QTableWidget(2, 2, this);
    generer = new QPushButton("&Générer !",this);
    QVBoxLayout *vbox = new QVBoxLayout;
    vbox->addWidget(generer);
    vbox->addWidget(tabM);
    setLayout(vbox);
 
    for (int r = 0; r < tabM->rowCount(); r++) {
        for (int c = 0; c < tabM->columnCount(); c++) {
            QTableWidgetItem *it = new QTableWidgetItem;
            tabM->setItem(r, c, it);
            it->setData(Qt::EditRole, 0);
        }
    }
 
    connect(generer, SIGNAL(clicked()), this, SLOT(FillIn()));
}
 
void FenPrincipale::FillIn()
{
    for (int r = 0; r < tabM->rowCount(); r++) {
        for (int c = 0; c < tabM->columnCount(); c++) {
            QTableWidgetItem *it = tabM->item(r,c);
            Q_ASSERT(it);
            qDebug() << it;
            int val = (it->data(Qt::EditRole)).toInt();
            M[r][c] = (val == 1) ? true : false;
            qDebug() << M[r][c];
        }
    }
}
 
 
//main.cpp
#include <QApplication>
#include "FenPrincipale.h"
 
int main(int argc, char* argv[])
{
    QApplication app(argc, argv);
 
    FenPrincipale fenetre;
    fenetre.show();
    return app.exec();
}

//header
#ifndef FENPRINCIPALE_H
#define FENPRINCIPALE_H
 
#include <QtGui>
 
class FenPrincipale : public QWidget
{
    Q_OBJECT
 
public:
    FenPrincipale();
    bool  M[2][2];
 
private slots:
    void FillIn();
 
private:
    QTableWidget *tabM;
    QPushButton *generer;
};
 
#endif
 
 




//FenPrincipale.cpp
#include <QDebug>
#include "FenPrincipale.h"
 
FenPrincipale::FenPrincipale()
{
    tabM =new QTableWidget(2, 2, this);
    generer = new QPushButton("&Générer !",this);
    QVBoxLayout *vbox = new QVBoxLayout;
    vbox->addWidget(generer);
    vbox->addWidget(tabM);
    setLayout(vbox);
 
    for (int r = 0; r < tabM->rowCount(); r++) {
        for (int c = 0; c < tabM->columnCount(); c++) {
            QTableWidgetItem *it = new QTableWidgetItem;
            tabM->setItem(r, c, it);
            it->setData(Qt::EditRole, 0);
        }
    }
 
    connect(generer, SIGNAL(clicked()), this, SLOT(FillIn()));
}
 
void FenPrincipale::FillIn()
{
    for (int r = 0; r < tabM->rowCount(); r++) {
        for (int c = 0; c < tabM->columnCount(); c++) {
            QTableWidgetItem *it = tabM->item(r,c);
            Q_ASSERT(it);
            qDebug() << it;
            int val = (it->data(Qt::EditRole)).toInt();
            M[r][c] = (val == 1) ? true : false;
            qDebug() << M[r][c];
        }
    }
}
 
 
//main.cpp
#include <QApplication>
#include "FenPrincipale.h"
 
int main(int argc, char* argv[])
{
    QApplication app(argc, argv);
 
    FenPrincipale fenetre;
    fenetre.show();
    return app.exec();
}

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Thank you all for your help.
I really apreciate it .
Thanks.