Using QSortFilterProxyModel

[jpn]

I have two table views that should visualize the same data. One is a filtered version of the other so it will not show all columns. I call them collapsedView and expandedView. Both are QTableView.

You don't need a proxy model to hide columns if that's all difference between them. You can use QTableView::setColumnHidden().

QTableView* collapsedView = new QTableView();
QTableView* expandedView = new QTableView();
 
SourceModel* sourceModel = new SourceModel();
FilterModel* filterModel = new FilterModel();
filterModel->setSourceModel(sourceModel);
 
collapsedView->setModel(filterModel);
expandedView->setModel(filterModel);
 
collapsedView->setColumnHidden(2, true); // hide for example second column

QTableView* collapsedView = new QTableView();
QTableView* expandedView = new QTableView();

SourceModel* sourceModel = new SourceModel();
FilterModel* filterModel = new FilterModel();
filterModel->setSourceModel(sourceModel);

collapsedView->setModel(filterModel);
expandedView->setModel(filterModel);

collapsedView->setColumnHidden(2, true); // hide for example second column

To copy to clipboard, switch view to plain text mode 

This way sorting should work correctly out of the box in both views.