问题
I want to know how do I exactly call a function from ProjectA::ClassA::FuncA() that is a Win32 .lib with /clr from a ProjectB::ClassB::FuncB() that does not have clr support and is a pure Win32 project. Both these projects are under same solution.
First, this is what I have tried: 1. Created the ProjectA with the .lib 2. Added the .lib path to ProjectB properties (in Linker:Input:Add.Dependencies) 3. I added the .h for the .lib created by ProjectA in ProjectB 4. Created the object for ProjectA::ClassA in ProjectB::ClassB and tried to call the FuncA().
I get the following error:
Error 1 error LNK2019: unresolved external symbol "public: static void __cdecl ClassA::FuncA(void)" (?FuncA@ClassA@@SAXXZ) referenced in function "public: static void __cdecl ClassB::FuncB(void)" (?FuncB@ClassB@@SAXXZ) Helper.obj
I am using third-party .lib s in ProjectB successfully. I follow the same process but it fails; the only difference being ProjectA() is with CLR support.
Am I missing something? Please enlighten me ;-)
Thanks!
回答1:
Native code can call managed code but that needs to be done in a source code file that's compiled with /clr. You need a little adapter class that's native (no "ref") in ProjectB. If these are instance methods then you'll need gcroot<> in the adapter to store a reference to the managed class.
来源：https://stackoverflow.com/questions/3994073/calling-a-function-from-a-win32-lib-project-with-clr-from-a-project-that-is-a