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C++ (Qt)
ComboBoxDelegate::ComboBoxDelegate(QObject *parent):
    QItemDelegate(parent)
{
}
 
ComboBoxDelegate::~ComboBoxDelegate()
{
}
 
QWidget *ComboBoxDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    if(index.column() == 0 || index.column() == 1){
        QComboBox *cb = new QComboBox(parent);
        return cb;
    }
}
 
void ComboBoxDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
{
     if(index.column() == 0 || index.column() == 1){
         QComboBox *cb = static_cast<QComboBox* >(editor);
 
         //послать запрос для забора возможных данных, чтобы делать выбора
         //чтобы ее заполнить типа как внизу
         //cb->addItem("jhjkh");
         //cb->addItem("kljkj");
 
         QSqlQuery query;
         qDebug()<<query.exec("SELECT * FROM TEZ_DEVICESTYPES");
         qDebug()<<query.record();
     }
 
}
 
void ComboBoxDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
{
     if(index.column() == 0 || index.column() == 1){
         QComboBox *cb = static_cast<QComboBox* >(editor);
         QString str = cb->currentText();
         model->setData(index,str,Qt::EditRole);
    }
}
 

true 
QSqlRecord( 2 ) 
 " 0:" QSqlField("TDEVICE_CODE", int, length: 2, precision: 0, required: yes, generated: yes, typeID: 500) "" 
 " 1:" QSqlField("TEZ_CODE", int, length: 2, precision: 0, required: yes, generated: yes, typeID: 500) ""