Member Avatar for Stefano Mtangoo

Hi,
I know how to make C++ plugin based application with C++ plugins. I need to add ability to code plugins in Python. I want users to be able to write Plugins in any language (C++ or Python). What are fundamentals of writting app in C++ but support plugins in Python?

I have googled and cannot find something useful yet(may be I use wrong keywords)

Thanks!

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Member Avatar for mike_2000_17

Definitely, go for Boost.Python. It can effectively replace a "plugin system" by just making you C++ code into Python classes and functions. It is seemless, with only a few quirks here and there. Essentially, you can make your C++ class hierarchy be reflected into Python packages, have Python classes derive from them, and then use those derived-class instances from the C++ code. This is basically how it's done.

I prefer to just use Boost.Python as the plugin system, because 99% of what you need to do to create a plugin system is already done by Boost.Python as it exports the classes into Python classes, and the other 1% can easily be done as additional exports. Then, you use Python scripts as the high-level "glue code", with the additional benefit that you can seemlessly mix Python classes, Python classes derived from C++ base classes, and wrapped C++ classes. It is easier to do that work in the Python scripts (e.g., feed an object of a Python class derived from a C++ base class to a wrapped C++ class/function, and the wrapped C++ code won't even see the difference), because loading Python packages and code from C++ code is a lot harder (but possible too).

Member Avatar for Stefano Mtangoo

Well since am the owner of thread and have jumped to the same thing (was postponed) no hurt reviving dead thread :)

I checked Boost Python and its awesome. I want my users to Just put their py code on plugins/python and I want my app (in C++ to just load them). I have two Questions here:
1. Does BoostP act as interpreter for me that I don't need Python DLL?
2. How do I send Events to Py code (I use wxWidgets). I mean how do I make it receive and event being a Python code?

Thanks

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