[Solved, but comments appreciated]QFileDialog greying out non-selected entries

[willi]

When I set up a QFileDialog - either with the easy static functions or with the constructors - to filter only a specific file extension. By default, the (non-native) QFileDialog greys out the not filtered entries.
Is there a way to make the dialog to hide these entries completely?
@
QStringList filters;
filters << "Module Dll's (_qtmdl.dll)"
<< "Dll's (.dll)"
<< "All Files (*)";

QFileDialog dialog(0,"Select a module DLL file.");

dialog.setFileMode(QFileDialog::AnyFile);
dialog.setViewMode(QFileDialog::Detail);
dialog.setOptions(QFileDialog::HideNameFilterDetails |
QFileDialog::DontUseNativeDialog );
dialog.setNameFilters(filters);
QStringList fileNames;
if(dialog.exec())
fileNames = dialog.selectedFiles();
@

If I understand it correctly, subclassing the proxy would allow me to influence the filter (like the solution "here.":http://stackoverflow.com/questions/2101100/qfiledialog-filtering-folders - But is there a way that I can completely hide the filtered entries?

[willi]

After a bit of research I found a solution. It is made by accessing the underlying QFileSystemModel via subclassing the QSortFilterProxyModel:
@
// this is the first part subclassing
// the QSortFilterProxyModel
//
class FileFilterProxyModel : public QSortFilterProxyModel
{
protected:
virtual bool filterAcceptsRow(int source_row, const QModelIndex& source_parent) const
{
QFileSystemModel* fileModel = qobject_cast<QFileSystemModel*>(sourceModel());
fileModel->setNameFilterDisables(false);
return QSortFilterProxyModel::filterAcceptsRow(source_row, source_parent);
}
};@

@
// this is further down in the code, setting up
// and executing the QFileDialog

QStringList filters;
filters << "Animal Dll's (_animal.dll)"
<< "Dll's (.dll)"
<< "All Files (*)";

QFileDialog dialog(0,"Select a Animal DLL file.");
dialog.setFileMode( QFileDialog::AnyFile);
dialog.setViewMode(QFileDialog::Detail);
dialog.setOptions(QFileDialog::HideNameFilterDetails | QFileDialog::DontUseNativeDialog );
dialog.setNameFilters(filters);

FileFilterProxyModel* proxyModel = new FileFilterProxyModel();
dialog.setProxyModel(proxyModel);

QStringList fileNames;
if(dialog.exec())
fileNames = dialog.selectedFiles();
@

There are a few open questions, maybe somebody else has a clue:

• I'm not sure whether the default sorting of the FileDialog still works. Is there a function that influences sorting?
• Although it works, I find it pretty awkward to subclass and object-cast just to change a setting in the filter. Is there a more elegant way to do this? Probably instead of implementing filterAcceptsRow(), implementing the constructor?