Comment 1 for bug 569880

IMAPIProgress should be implemented similar to IMAPIAdviseSink in Styx.

There will be a real C++ object in libcmapi (CMapiProgress), which forwards the calls to the bridge in C# (ProgressBridge), which again forwards the calls to the IMapiProgress object. I just need to dive a bit deeper into this to hack it, but it doesn't look too complicated.

Will happen soon, if time allows :)