[Csgl-users] DLL help

[Don-Duong Q. <dj...@ya...>]

This is indirectly related to CsGL.  I'll be using it to build an editor for my engine later.  I'm hoping someone can help me shed some light on a problem I'm having.  I've built my engine using C++ and exported it as dll libraries in VC++ 6.  I've gotten some C4251 warnings about not exporting standard libary, base classes, but they don't seem to be a problem.

I have a C++ class called gb::io::BinaryStream that I wrapped up in a managed C++ called gb::cs::io::BinaryStream.  gb::io::BinaryStream derives from std::basic_fstream< char > for file manipulation.  During my C# test app's construction, I have a variable of type gb::cs::io::BinaryStream that gets instantiated.

However when I call gb::cs::io::BinaryStream.Open function (which delegates to gb::io::BinaryStream.Open) I get:

An unhandled exception of type 'System.NullReferenceException' occurred in gbio_cs.dll

Additional information: Object reference not set to an instance of an object.

However, if I call gb::io::Close() no exception occurs.  I also can't step into the dll for debugging, but if I link with static versions of my libraries everything works fine. 

Has anyone experienced this?

Thanks,

Don



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