modification for not see the application crash when close the QDialog window call by pushButton from this open_project...

gistfile1.txt

// i commented the line use QSqlQueryModel and byu this way, no more crash of the application... but impossible to use QSqlQueryModel and open an other one Qdialog wondow from here (and who use QSqlQuery) without crash if use this QSqlQUeryModel... why ?

open_project::open_project(QWidget *parent) :
    QDialog(parent),
    ui_open_project(new Ui::open_project)
{
    ui_open_project->setupUi(this);
    locations_name = new QStandardItemModel;
    user->initdb();
    locations_refresh();
   // model = new QSqlQueryModel();
   // model->setQuery("SELECT id, name, comment, refproject, datecreate "
   //                 "FROM \"Projects\" "
   //                 "WHERE dateclose IS NULL "
   //                 "ORDER BY datecreate ;");
    model = new QStandardItemModel;
    QSqlQuery query(user->currentDB());
    query.prepare("SELECT id, name, comment, refproject, datecreate "
                                   "FROM \"Projects\" "
                                   "WHERE dateclose IS NULL "
                                   "ORDER BY datecreate ;");
    query.exec();
    QList<QStandardItem*> my_row;
    QString sformat = QString("dd/MM/yyyy %1 hh:mm:ss").arg(tr("à"));
    while(query.next()) {
        my_row.clear();
        QStandardItem *c_id           = new QStandardItem(query.value(0).toString());
        QStandardItem *c_name         = new QStandardItem(query.value(1).toString());
        QStandardItem *c_comment      = new QStandardItem(query.value(2).toString());
        QStandardItem *c_ref_project  = new QStandardItem(query.value(3).toString());
        QStandardItem *c_date         = new QStandardItem(query.value(4).toDateTime().toString(sformat));
        my_row << c_name << c_comment << c_ref_project << c_date << c_id;
        model->appendRow(my_row);
    }
    ui_open_project->projects_list->setModel(model);
   // ui_open_project->projects_list->setModelColumn(1);
    ui_open_project->projects_list->show();
    ui_open_project->checkBox_location->setChecked(false);
    ui_open_project->treeView_locations->setEnabled(false);
    ui_open_project->pushButton_location->setEnabled(false);
    ui_open_project->checkBox_structure->setChecked(false);
    ui_open_project->treeView_structures->setEnabled(false);
    ui_open_project->pushButton_structure->setEnabled(false);
    ui_open_project->treeView_locations->setModel(locations_name);
    ui_open_project->treeView_locations->setHeaderHidden(true);
}

open_project::~open_project()
{
    delete ui_open_project;
}



void open_project::on_projects_list_clicked(const QModelIndex &index)
{
   // QString sformat = QString("dd/MM/yyyy %1 hh:mm:ss").arg(tr("à"));
   // name        = model->record(index.row()).value("name").toString();
   // comment     = model->record(index.row()).value("comment").toString();
   // ref_project = model->record(index.row()).value("refproject").toString();
   // date_create = model->record(index.row()).value("datecreate").toDateTime();
   // id          = model->record(index.row()).value("id").toInt();

    name        = model->data(index).toString();
    comment     = model->data(model->index(index.row(), 1, index.parent())).toString();
    ref_project = model->data(model->index(index.row(), 2, index.parent())).toString();
    date_create = model->data(model->index(index.row(), 3, index.parent())).toString();
    id          = model->data(model->index(index.row(), 4, index.parent())).toInt();
    QMessageBox::warning(this, "DEBUG", QString("%1").arg(id));
    ui_open_project->label_name->setText(name);
    ui_open_project->comment->setText(comment);
    ui_open_project->ref_client->setText(ref_project);
  //  ui_open_project->date_create->setText(date_create.toString(sformat));
    ui_open_project->date_create->setText(date_create);
    if (id != 0)
        locations_refresh();
    ui_open_project->treeView_locations->setColumnHidden(1,true);
}