[ritonlajoie]

My understanding is that dual debugging works when your main process is oythin and you can the debug some C python module. Is ther a way to debug a C process loading python27.dll which then runs some pythin code using the oython-C api?

[int_19h]

Mixed-mode debugging works in both of these scenarios (remember that python.exe is really just a "C process loading python27.dll"). You don't need a Python project at all, you can just attach to a running process (whether it is python.exe or your own host) and start debugging. You can even do that if the host process hasn't actually loaded python##.dll yet, though of course Python breakpoints etc will only light up once that happens.

Here's a screenshot of a debug session with a custom host process written in C# running Python code that in turn uses a C++ extension module: http://i.imgur.com/IDPsWUu.png