tautvydaszilys / unity-uwp-il2cpp-with-csharp-project-example Goto Github PK

I my project I changed method declaration from:
AddActivatedEventArgs(IInspectable* activatedEventArgs)
to:
AddNavigatedEventArgs(const wchar_t* uri);
and had problems with building VS solution, I was getting error:

Error LNK2019 unresolved external symbol "__declspec(dllimport) void __cdecl AddNavigatedEventArgs(wchar_t const *)" (_imp?AddNavigatedEventArgs@@YAXPEB_W@Z) referenced in function "public: void __cdecl <lambda_04e3cba9169c0bbc1d026482afcbec48>::operator()(void)const " (??R<lambda_04e3cba9169c0bbc1d026482afcbec48>@@QEBAXXZ)

To make it work I had to change declaration in App.xaml.cpp from:
__declspec(dllimport) void __stdcall AddNavigatedEventArgs(const wchar_t* uri)
to:
__declspec(dllimport) extern "C" void __stdcall AddNavigatedEventArgs(const wchar_t* uri);

Without "extern "C"", compiler was changing the method name and linker wasn't able to find it.

Hi TautvydasZilys,

I try to follow your idea to do the same thing in a Unity UWP D3D IL2CPP app I developed. However, after I insert the code (C++ version) you suggested here I got the error:

Severity Code Description Project File Line Suppression State
Error LNK2001 unresolved external symbol "__declspec(dllimport) void __stdcall AddActivatedEventArgs(struct IInspectable *)" (_imp?AddActivatedEventArgs@@YGXPAUIInspectable@@@z) eDrawings E:\eDrawingsDev\HoloLens\Native_Unity\eDrawings\HoloLensBuild\eDrawings\App.obj 1

So I insert the VS code part in App.cpp because it's a D3D IL2CPP app.

Anything I am missing here to make it work? Thanks!

I wasn't able to make this work with Unity 2018.3. Any chance you could provide a version of this sample that targets 2018.3? I suspect I may have blundered in the way the project is configured, but it's not obvious.