QFileSystemModel and QSortFilterProxyModel don't work well together?

[ecanela]

this code only filter the file who name is EXACTLY ".cpp", line 12 and 13

sfpm->setFilterRegExp(QRegExp(".cpp", Qt::CaseInsensitive,QRegExp::FixedString));

sfpm->setFilterRegExp(QRegExp(".cpp", Qt::CaseInsensitive,QRegExp::FixedString));

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this code filter all the file who suffix are "cpp",

sfpm->setFilterRegExp(QRegExp("*.cpp", Qt::CaseInsensitive,QRegExp::WildcardUnix));

sfpm->setFilterRegExp(QRegExp("*.cpp", Qt::CaseInsensitive,QRegExp::WildcardUnix));

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that can rewrite like ...

sfpm->setFilterCaseSensitivity(Qt::CaseInsensitive);
sfpm->setFilterWildcard ("*.cpp");

sfpm->setFilterCaseSensitivity(Qt::CaseInsensitive);
sfpm->setFilterWildcard ("*.cpp");

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[solotim]

Thanks, All. But I think spirit is basic right. It has nothing to do with if the RegExp is correct. The real problem is hierarchical data model. I need to subclass QSortFilterProxyModel to do something concerning "source_parent":

class MySortFilterProxyModel : public QSortFilterProxyModel
{
protected:
    virtual bool MySortFilterProxyModel::filterAcceptsRow(
            int source_row, const QModelIndex &source_parent) const{
        QFileSystemModel *sm = qobject_cast<QFileSystemModel*>(sourceModel());
        if (source_parent == sm->index(sm->rootPath())) {    
            return QSortFilterProxyModel::filterAcceptsRow(source_row, source_parent);
        } 
        return true;            
    }
};

class MySortFilterProxyModel : public QSortFilterProxyModel
{
protected:
    virtual bool MySortFilterProxyModel::filterAcceptsRow(
            int source_row, const QModelIndex &source_parent) const{
        QFileSystemModel *sm = qobject_cast<QFileSystemModel*>(sourceModel());
        if (source_parent == sm->index(sm->rootPath())) {    
            return QSortFilterProxyModel::filterAcceptsRow(source_row, source_parent);
        } 
        return true;            
    }
};

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This works fine for me.