CODEWITHSUNDEEP
c#.netvisual-c++
Troy
Troy

Reputation: 11

Visual C++ .NET using C# library. Need help?

I have a library a friend wrote in C# and I need to use it in C++.NET. I'm new to VC++.NET and I don't know how to declare my class so it can be used by all functions in my file.. Here's my code..

using namespace System;
using namespace ONEAPI;
namespace Bot{

    void InitializeBot();
    ONEAPI::Connection connection(true);
    int main(array<System::String ^> ^args)
    {
        Console::BackgroundColor = ConsoleColor::Black;
        InitializeBot();
        return 0;
    }
    void InitializeBot(){
        connection.StartConnection("127.0.0.1", 1274, "username",
            "B73955EE7A30E959819BAE2392F6F4441DF98C66A4026EF55287A81D1F815504",
            "R0Bo");
    }
}

I get this error:

Error 1 error C3145: 'connection' : global or static variable may not have managed type 'ONEAPI::Connection' Visual Studio 2010\Projects\1hubBot\1hubBot\1hubBot.cpp 10 1 1hubBot

Upvotes: 0

Views: 641

Answers (2)

ChrisV
ChrisV

Reputation: 3423

You can't have managed types at global- or file-scope. Wrap the Connection object in an unmanaged (regular C++-style) class and create a global instance of that instead.

EDIT: After looking up the appropriate compiler mumbo-jumbo, here's what I came up with:

#include <vcclr.h>
using namespace System;
using namespace ONEAPI;

namespace Bot {
    class ConnectionWrapper {
    public:
        static gcroot<ONEAPI::Connection^> connection;
    };

    gcroot<ONEAPI::Connection^> ConnectionWrapper::connection = gcnew Connection(true);

    void InitializeBot() {
        ConnectionWrapper::connection->StartConnection(...);
    }
}

Upvotes: -1

Reed Copsey
Reed Copsey

Reputation: 564363

You can't use a managed type ("Connection") within a static or global - it has to exist inside of a ref class or as a local. This is a requirement of C++/CLI.

You'll need to put your code into a managed class, and use it there. I recommend going through a C++/CLI Tutorial, as it will explain this fairly quickly.

Upvotes: 2

Related Questions