Can a C++ Header file with classes be converted to a Delphi unit?
c++, delphi, header-files
Solution
In the sense of allowing you to use the DLL from Delphi code? Yeah, good luck with that. You know how you can't use Delphi classes in a DLL unless the client code is written in the same version of Delphi and even then it's usually a bad idea due to shared memory management gotchas? C++ poses exactly the same problem, only exponentially worse because there's no standardized ABI and there's all sorts of C++-language screwed-uppedness making problems for you.
The only real way to make it work reliably is with an interface that uses a standard ABI. If you have the source, try making a C interface that wraps the C++ interface. If not, ask the person who wrote the DLL to provide a C interface, and ask whoever made the decision to use this DLL why you're using a 3rd party library with no source available. :P
Problem
I have a C++ *.h file with three classes in it. The header file is for accessing a DLL. I have almost no C++ knowledge. However, I seem to recall from somewhere that you can't convert a *.h file to a Delphi unit that has classes in it. Is this true? If it isn't true, and classes in header files aren't a problem, what is the general approach to converting the classes to Delphi?