Re: Boost Python Cross Module dependencies

From: rwgk_at_[hidden]
Date: 2001-07-10 03:46:18

--- In boost_at_y..., Bernhard Glück <gluber_at_g...> wrote:
> I have a little problem with the boost::python lib.

This problem might be bigger than little.

> class_builder<Object> * ScriptEngine()->GetObjectBase();
> 
> module_builder * ScriptEngine()->GetModule()
> 
> So in a plugin the code could write this:
> 
> class_builder<MyPluginClassDerivedfromObject>
> mp(*ScriptEgine()->GetModule(),"mypluginclass");
> mp.declare_base(*ScriptEngine()->GetObjectBase);

Very interesting concept. So ScriptEngine is your C++ object?
How does GetModule() know what pointer to return?

> I came across the section in the manual about "Cross Module 
dependencies"
> and tried to export_convertors_noncopyable(object_class); etc and 
the
> corresponding import_convertors in the plugin modules. I think that 
should
> be the solution for my problem.. But now i always get one unresolved
> external which I cannot fix... Maybe it rings a bell to anyone of 
you :

declare_base() is not covered by the cross-module support.
You are not the first one to ask, so we should probably mention
this in the documentation.
I figure it is not impossible to extend the cross-module support
to do what you want, but we need a highly skilled volunteer to do
it...

But, before doing anyting else, please explain in more detail how
GetModule() knows what pointer to return! Your idea looks
intriguing.

Ralf