QSortFilterProxyModel - get root path

[phamtv]

How can I get the root path of a QSortFilterProxyModel that uses QFileSystemModel as its source model?

I tried the following in an QSortFilterProxyModel-based class but it does not seem to work:
@
((QFileSystemModel)sourceModel()).rootPath()
@

[andre]

Iterate up to the root node, and get the path there through the appropriate role?

[phamtv]

I tried but I cannot seem to get the string rootpath correctly. Thus I connected a slot to the rootPathChanged signal for the QFileStringModel and set a QString rootPath variable I delcared.

@
void MainWindow::fsModel_rootPathChanged(QString str)
{
m_checkProxy->rootPath = str;
}
@

NOTE: still don't know why I was unable to get it using the rootPath

Thanks for your response...