Russian Qt Forum

C++ (Qt)
 
//----------------------------------Delegate.cpp-------------------------------------------------------------------------
 
QWidget *Delegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    QLineEdit *lineEdit = new QLineEdit(parent);
    return lineEdit;
}
 
void Delegate::setEditorData(QWidget *editor, const QModelIndex &index) const
{
    QString string = index.model()->data(index,Qt::EditRole).toString();
    QLineEdit *le = static_cast<QLineEdit* >(editor);
    le->setText(string);
}
 
//-------------------mainwindow.cpp--------------------------
 
Delegate *mydelegate = new Delegate(this);
 
QTreeView*view = new QTreeView;
view->resize(400,600);
view->show();
 
ObjectBrowserModel*model = new ObjectBrowserModel(base);
view->setModel(model);
view->setItemDelegate(mydelegate);
 
 

C++ (Qt)
view->setEditTriggers( QAbstractItemView::DoubleClicked );

C++ (Qt)
Qt::ItemFlags ObjectBrowserModel::flags(const QModelIndex &index) const
{
    if(index.isValid())
    {
        return Qt::ItemIsEditable|Qt::ItemIsSelectable|Qt::ItemIsEnabled;
    }
    else
        return 0;
}
 

C++ (Qt)
 
void Delegate::drawDecoration(QPainter *painter, const QStyleOptionViewItem &option, const QRect &rect, const QPixmap &pixmap) const
{
    QIcon icon;
    icon.setThemeName("D:\images\networkee.png");
 
    QItemDelegate::drawDecoration(painter,
                             option,
                             option.rect,
                             icon.pixmap(QSize(22,22),QIcon::Normal,QIcon::On)
                             );
}
 

C++ (Qt)
model->setData( index, icon, Qt::DecorationRole );

C++ (Qt)
model->setData( index, icon, Qt::DecorationRole );

C++ (Qt)
bool ObjectBrowserModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
    QObject *obj;
    if(index.isValid())
    {
        obj = reinterpret_cast<QObject* >(index.internalPointer());
    }
    else
    {
        obj = base;
    }
 
    if(role == Qt::EditRole)
    {
        if(index.column() == 0 && QVariant(obj->metaObject()->className()).toString() == "Station")
        {
            Station*s =  dynamic_cast<Station*>(obj);
            s->str = value.toString();  
 
        }
        else  if(index.column() == 1 && QVariant(obj->metaObject()->className()).toString() == "Device")
        {
            Device*d =  dynamic_cast<Device*>(obj);
            d->str = value.toString();
        }
        return true;
    }
    else if(role == Qt::DecorationRole)
    {
 
        if(index.column() == 0 && QVariant(obj->metaObject()->className()).toString() == "Station")
        {
            QAbstractItemModel::setData(index,QIcon("D:/images/networkee.png"),Qt::DecorationRole);            
        }
        return true;
    }
    return false;
}
 

C++ (Qt)
QVariant ObjectBrowserModel::data( const QModelIndex& index, int role ) const
{
	if( role == Qt::DecorationRole &&
		index.column() == 0 && obj->metaObject()->className() == "Station" )
	{
		static QIcon icon( ":/images/networkee.png" ); // icon better place in the resources
		return QVariant::fromValue< QIcon >( icon );
	}
	return QAbstractItemModel::data( index, role );
}