qml: problem with TableView refresh on model update

Hello everyone! I have simple QML app with TableView on screen. This view displays data from my custom model – derived from QAbstractTableModel: #include "pswlistmodel.h" #include <QDebug>   PswListModel::PswListModel(QObject *parent)     : QAbstractTableModel(parent)     , hidePsws(true) {     //test     for (int i=0; i<10; ++i)     {         PswElement* e = new PswElement();         e->login = "login " + QString::number(i);         e->name = "name " + QString::number(i);         e->password = "password " + QString::number(i);         this->elements.append(e);     } }   PswListModel::~PswListModel() {     qDeleteAll(this->elements);     this->elements.clear(); }   int PswListModel::rowCount(const QModelIndex& /*parent*/) const {     return this->elements.size(); }   int PswListModel::columnCount(const QModelIndex& /*parent*/) const {     return 3; }   QVariant PswListModel::data(const QModelIndex& index, int role) const {     if (this->elements.isEmpty())         return QVariant();       if (index.row() >= this->elements.size())         return QVariant();         PswElement *e = this->elements[index.row()];       if (role == Qt::DisplayRole)     {         //name         if (index.column() == 0)             return e->name;           //login         if (index.column() == 1)             return e->login;           //password         if (index.column() == 2)         {             if (!this->hidePsws)                 return e->password;             else                 return "***";         }     }     else if (role == PswNameRole)         return e->name;     else if (role == PswLoginRole)         return e->login;     else if (role == PswPswRole)     {         qDebug() << "get psw (" << index.row() << "), hide: " << this->hidePsws;         if (!this->hidePsws)             return e->password;         else             return "***";     }       return QVariant(); }   QVariant PswListModel::headerData(int section, Qt::Orientation orientation, int role) const {     if (orientation == Qt::Horizontal)     {         if (role == Qt::DisplayRole)         {             if (section == 0)                 return QString("Name");             else if (section == 1)                 return QString("Login");             else if (section == 2)                 return QString("Password");         }         else if (role == PswNameRole)             return "Name";         else if (role == PswLoginRole)             return "Login";         else if (role == PswPswRole)             return "Password";     }     else     if (orientation == Qt::Vertical)         return QString();       return QVariant::Invalid; }   QHash<int, QByteArray> PswListModel::roleNames() const {     QHash<int, QByteArray> roles;     roles[PswNameRole] = "name";     roles[PswLoginRole] = "login";     roles[PswPswRole] = "password";     return roles; }   void PswListModel::showPasswords(bool value) {     qDebug() << "showPasswords: " << value;     this->hidePsws = value;       QModelIndex idTop = QAbstractTableModel::index(0, 0);     QModelIndex idBottom = QAbstractTableModel::index(this->elements.size(), 4);       emit dataChanged(idTop, idBottom); } TableView in qml works fine, it displays all data from model. Now there is CheckBox in qml screen for toggling passwords. When state changes I am calling PswListModel::showPasswords from my custom model (from qDebug, I can see that value is changing). This should toggle the passwords visibility from “***” to real passwords. However, even if emitting dataChanged signal, TableView view in qlm is not refreshed. I am using Qt is 5.4.0, QtQuick 2.4 and QtQuick.Controls 1.3. Platform: Windows 7. Thanks in advance.