how to call unmanaged dll from managed c++

Question

I am calling an unmanaged DLL from managed C++. The DLL has more than one native dependency. I am trying to compile this through Visual Studio.

I have done the following:

1. Added the directory that contains the DLLs and the .lib to Properties -> VC++ Directories -> Library directories

2. Added the unmanaged .lib to Properties -> Input -> Additional Dependencies

However, I get linking errors for the functions that I refer to. I haven't added any DLL or lib to the project except for the header file of the library.

UPDATE: So it is able to find the .lib because if I give a bogus .lib in additional dependencies I get compilation error of the .lib not found. The error that I have is "unresolved token .... " .

Answer 1

I suggest you have a good read of this . Calling DLLs from C# is straightforward, because .NET supports it and managed C++ is just another .NET implementation, and should also be straightforward.