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I'm a bit new to the C++ Qt combo. I have a more solid background in C# and WPF. I want to create a treeview with filtering. The filtering would remove top level items which don't contain children that match the filter string. Below demonstrates how the results would work when a filter is used.

Sports
|____ Soccer
|____ Basketball
|____ Football
|____ Tennis

Teams
|____ Cowboys
|____ Packers
|____ Lions
|____ Tennessee

Players
|____ Ronald
|____ Warner
|____ Robinson

If i then searched with a filter string of 'Ten' It would result in this...

Sports
|____ Tennis

Teams
|____ Tennessee

My question may seem simple, but how can i go about doing this? Creating a simple sample like this using QtCreator. I've added my QTreeView but I'm not entirely clear on how to populate it with dummy data and then filter it.

MySorter(QObject *parent); protected: virtual bool filterAcceptsRow(int source_row, const QModelIndex & source_parent) const override;

// MySorter.cpp
#include "MySorter.h"
MySorter::MySorter(QObject *parent) : QSortFilterProxyModel(parent){}
bool MySorter::filterAcceptsRow(int source_row, const QModelIndex & source_parent) const
     // check the current item
     bool result = QSortFilterProxyModel::filterAcceptsRow(source,source_parent);
    QModelIndex currntIndex = sourceModel()->index(source_row, 0, source_parent);
    if (sourceModel()->hasChildren(currntIndex)) {
// if it has sub items
        for (int i = 0; i < sourceModel()->rowCount(currntIndex) && !result; ++i) {
// keep the parent if a children is shown
            result = result || filterAcceptsRow(i, currntIndex);
    return result;
	
"La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"

~Napoleon Bonaparte
On a crusade to banish setIndexWidget() from the holy land of Qt
			
This example helped me a lot, I implemented it in python. Hereby the corresponding code:
class FilterProxyModel(QtCore.QSortFilterProxyModel):
    def __index__(self):
        super(FilterProxyModel, self).__index__(self)
    def filterAcceptsRow(self, p_int, QModelIndex):
        res = super(FilterProxyModel, self).filterAcceptsRow(p_int, QModelIndex )
        idx = self.sourceModel().index(p_int,0,QModelIndex)
        if self.sourceModel().hasChildren(idx):
            num_items = self.sourceModel().rowCount(idx)
            for i in xrange(num_items):
                res = res or self.filterAcceptsRow(i, idx)
        return res
I hope it helps someone els