C++ (Qt)
#ifndef WORKSMODEL_H
#define WORKSMODEL_H
#include <QAbstractTableModel>
#include <QList>
#include "work.h"
 
class Worksmodel : public QAbstractTableModel
{
public:
    Worksmodel(QList<Work> *worklist, QObject *parent = 0);
    int rowCount(const QModelIndex &parent) const;
    int columnCount(const QModelIndex &parent) const;
    QVariant data(const QModelIndex &index, int role) const;
    QVariant headerData(int section, Qt::Orientation orientation,int role) const;
    QList<Work> *worklist;
};
#endif

C++ (Qt)
 #include "worksmodel.h"
#include <QList>
 
Worksmodel::Worksmodel(QList<Work> *worklist, QObject *parent) : QAbstractTableModel(parent)
{
    this->worklist = worklist;
}
 
int Worksmodel::rowCount(const QModelIndex & ) const
{
    return worklist->count();
}
 
int Worksmodel::columnCount(const QModelIndex & ) const
{
    return(5);
}
 
QVariant Worksmodel::data(const QModelIndex &index, int role) const
{
    if (!index.isValid())
        return QVariant();
 
    if (role == Qt::TextAlignmentRole) {
        return int(Qt::AlignLeft | Qt::AlignVCenter);
    } else if (role == Qt::DisplayRole) {
        switch (index.column())
        {
            case 0: {return worklist->at(index.row()).id; }
            case 1: {return worklist->at(index.row()).name; }
            case 2: {return worklist->at(index.row()).mh; }
            case 3: {return worklist->at(index.row()).md; }
            case 4: {
                    QString after;
                    if(!worklist->at(index.row()).after.isEmpty())
                    {
                        after = QString::number(worklist->at(index.row()).after[0]);
                        for(int i = 1; i < worklist->at(index.row()).after.count(); ++i)
                        {
                            after += ", "+QString::number(worklist->at(index.row()).after[i]);
                        }
                        return after;
                    }
                    return "0";
                }
        }
    }
    return QVariant();
}
 
QVariant Worksmodel::headerData(int section, Qt::Orientation  orientation ,int role) const
{
    if (role != Qt::DisplayRole)
        return QVariant();
    QStringList headers;
    headers << "#"
            << "Work's name"
            << "Man-hour"
            << "Man-day"
            << "Do after:";
    if (orientation == Qt::Horizontal && role == Qt::DisplayRole)
    {
        return headers[section];
    }
    return QVariant();
}
 

C++ (Qt)
class Work{ public:
     int id;
    QString name;
    double mh;
    double md;
    QList<int> after;
};