filtering the filtered QSortFilterProxyModel

[Stravinsky]

Hello.

In my application is quick search to filtering. After the first filtering wish to filter only the filtered data. Someone know how to fixed this problem?

I used signal/slot between QLineEdit and my own slot:

    connect(ui->lineEdit_Filtr_VIEW, SIGNAL(textChanged(QString)),
     this, SLOT(filterRegExpChanged()));

in my slot:

       QRegExp regExp(arg1, Qt::CaseInsensitive, QRegExp::Wildcard);
       proxy_own->setFilterRegExp(regExp);