用C ++ dll 64位编译我的32位项目

Question

I have some legacy C# application ( 32 bit ) that work with some C++ 3rd party dll ( not com .. just simple unmanaged C++ )

One of those 3rd party dll just release new dll version - and this version is not 32 bit any more - its 64 bit.

I can't compile my code to 64 bit.

How can i continue work with this new version of 64 bit dll ?

Answer 1

Maybe the simplest way would be to write a COM wrapper for the third party dll. I'd probably write that in c# because I'm lazy af but it could be C++ if you liked. Then you could call that wrapper, but it would have to be out of proc because you can't call across bitness in proc, but you knew that.

Answer 2

You cannot load a 64 bit DLL into a 32 bit process. Or indeed vice versa FWIW. It follows that you'll need two processes and IPC.

An out of process COM server would probably be the simplest way to proceed.