I hope this is the right place to post (I was redirected from the msdn.com forums here).

I seem to have a problem with this filter. When I add it manually with GraphEdit the tabs "Scanning Tuner", "DVBT Tune Request" and so on appear. However when I add the filter from my application I only have Antenna Out tab.

In my application I get fail for

netprovider.QueryInterface(CLSID_DVBTuningSpace, tvtuner);
tvtuner.get_TuningSpace(tspace);

I am guessing that this is the case because I am also missing the tabs that I spoke above when I right click the netprovider (Microsoft Network Provider) filter in remote graph with Graphedit.

Bottom line: how can I correctly add the Microsoft Network Provider filter to my graph - just like Graphedit does?

PS: tried it with two separate DVB-T tv-cards under Windows 7 and another different DVT-T tv-card under Windows XP (where I used Microsoft DVB-T Network Provider).

Thank you.