public void ReloadFilters() { log("reload filters.."); IEnumFilters ef; ClearFiltersSelection(); ClearConnections(); filter_positions.Clear(); foreach (Filter f in filters) { filter_positions.Add(f.Name, f.Coords); } filters.Clear(); log("reload_filters 1"); try { int hr = graphBuilder.EnumFilters(out ef); DsError.ThrowExceptionForHR(hr); IBaseFilter[] fs = new IBaseFilter[1]; IntPtr fetched = Marshal.AllocHGlobal(4); while ((hr = ef.Next(1, fs, fetched)) == 0) { log("reload_filters 2"); FilterInfo fi; fs[0].QueryFilterInfo(out fi); log("reload_filters: " + fi.achName); Filter ff = FindFilterByName(fi.achName); if (ff == null) //not found { ff = new Filter(fs[0]); AddFilterHere(ff, false, null); history.AddFilterIfNew(ff.filterProps, ff.Name, ff.srcFileName, ff.dstFileName, ff); } else { ff.ReloadPins(); } log("reload_filters 3"); foreach (Pin pin in ff.Pins) { log("reload_filters 4: " + pin.Name); IPin ip = pin.IPin, connected_ipin; hr = ip.ConnectedTo(out connected_ipin); if (hr != 0) { continue; } PinInfo cpi; connected_ipin.QueryPinInfo(out cpi); FilterInfo cfi; cpi.filter.QueryFilterInfo(out cfi); Filter connected_filter = FindFilterByName(cfi.achName); if (connected_filter != null) { Pin cp = connected_filter.FindPinByName(connected_filter.Name + "." + cpi.name); if (cp != null) { string con_uniqname = (pin.Direction == PinDirection.Input) ? cp.UniqName + "-" + pin.UniqName : pin.UniqName + "-" + cp.UniqName; PinConnection con = FindConnectionByName(con_uniqname); if (con == null) { if (pin.Direction == PinDirection.Input) { Connect(cp, pin); } else { Connect(pin, cp); } } } } DsUtils.FreePinInfo(cpi); } } Marshal.FreeHGlobal(fetched); if (hr < 0) { DsError.ThrowExceptionForHR(hr); } } catch (COMException e) { ShowCOMException(e, "Error while enumerating filters in the graph"); return; } /*catch (Exception e) * { * MessageBox.Show(e.Message, "Error while enumerating filters in the graph"); * return; * }*/ log("reload_filters: almost done"); history.CommitAdded(); log("reload_filters: done"); }