Ich brauche hier ernsthafte Hilfe ... Ich versuche, meine Mitgliedsfunktionen zu exportieren, damit ich sie in C # aufrufen kann.

WMIWrapper.h

#ifndef _WMIWRAPPER_H_
#define _WMIWRAPPER_H_

#include <Windows.h>  
#include <sstream>  
#include <iostream>
#include <WbemCli.h>  

using std::endl;
using std::wstring;
using std::wstringstream;

#pragma comment(lib, "wbemuuid.lib")  

static class WMIWrapper 
{  
public:
    __declspec(dllexport) WMIWrapper();
    __declspec(dllexport) ~WMIWrapper();

    __declspec(dllexport) wstring CreateCOM();
    __declspec(dllexport) wstring CreateService();
__declspec(dllexport) wstring GetMonitors();

private:
    IWbemLocator* _locator;
    IWbemServices* _service;
    IEnumWbemClassObject* _monitors;
};

#endif

WMIWrapper.cpp

#include "WMIWrapper.h"


extern "C" {

    WMIWrapper::WMIWrapper()
    {
        _locator = NULL;
        _service = NULL;
    }

    WMIWrapper::~WMIWrapper()
    {
        if(_service != NULL)
            _service->Release();
        if(_locator != NULL)
            _locator->Release();
    }

    wstring WMIWrapper::CreateCOM()
    {
        wstringstream ERRStream (wstringstream::in | wstringstream::out);
        HRESULT hRes = CoInitializeEx(NULL, COINIT_MULTITHREADED);  
        if(FAILED(hRes))  
        {  
            ERRStream << "Unable to launch COM: 0x" << std::hex << hRes << endl;
            return L"";  
        }  

        hRes = CoInitializeSecurity(NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_CONNECT, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, 0);
        if(FAILED(hRes))
        {
            ERRStream << "Unable to set security level for COM: " << std::hex << hRes << endl;
            return L"";
        }

        if(FAILED(hRes = CoCreateInstance(CLSID_WbemLocator, NULL, CLSCTX_ALL, IID_PPV_ARGS(&_locator))))  
        {  
            ERRStream << "Unable to create a WbemLocator: " << std::hex << hRes << endl;  
            return L"";  
        }

        const std::wstring& myWString = ERRStream.str();
        const LPCWSTR p = myWString.c_str();
        return p;

    }

    wstring WMIWrapper::CreateService()
    {
        wstringstream ERRStream (wstringstream::in | wstringstream::out);
        HRESULT hRes;
        if(_locator == NULL || FAILED(hRes = _locator->ConnectServer(L"root\\CIMV2", NULL, NULL, NULL, WBEM_FLAG_CONNECT_USE_MAX_WAIT, NULL, NULL, &_service)))  
        {  
            ERRStream << "Unable to connect to \"CIMV2\": " << std::hex << hRes << endl;  
            return L"";  
        }  

        const std::wstring& myWString = ERRStream.str();
        const LPCWSTR p = myWString.c_str();
        return p;
    }

    wstring WMIWrapper::GetMonitors()
    {
        HRESULT hRes;
        wstringstream ssMonitorDescription;
        if(_locator == NULL 
            || _service == NULL
            || FAILED(hRes = _service->ExecQuery(L"WQL", L"SELECT * FROM Win32_DesktopMonitor", WBEM_FLAG_FORWARD_ONLY, NULL, &_monitors)))
        {
            //ERRStream << "Unable to retrieve desktop monitors: " << std::hex << hRes << endl;
            return L"";
        }

        IWbemClassObject* clsObj = NULL;
        int numElems;
        while((hRes = _monitors->Next(WBEM_INFINITE, 1, &clsObj, (ULONG*)&numElems)) != WBEM_S_FALSE)
        {
            if(FAILED(hRes))
                break;

            VARIANT vRet;
            VariantInit(&vRet);
            if(SUCCEEDED(clsObj->Get(L"Description", 0, &vRet, NULL, NULL)) && vRet.vt == VT_BSTR)
            {
                //std::wcout <<  L"Description: " << vRet.bstrVal << endl;
                ssMonitorDescription << "Description: " << vRet.bstrVal << endl;
                VariantClear(&vRet);
            }
        }

        clsObj->Release();

        return ssMonitorDescription.str();
    }
}

Interface.cpp

#include "WMIWrapper.h"

extern "C" 
{
    __declspec( dllexport ) wstring GetMonitor()
    {
        WMIWrapper* wmiWrapper = new WMIWrapper();
        wmiWrapper->CreateCOM();
        wmiWrapper->CreateServiceW();
        return wmiWrapper->GetMonitors();
    }
}

Unity Script

using UnityEngine;
using System.Runtime.InteropServices;
using System;


public class HardwareDiagnostics : MonoBehaviour {

    //[DllImport("WMIWrapper", EntryPoint="CreateCOM", CharSet = CharSet.Unicode)]
    //static extern String CreateCOM();
    //
    //[DllImport("WMIWrapper", EntryPoint="CreateService", CharSet = CharSet.Unicode)]
    //static extern String CreateService();
    //
    //[DllImport("WMIWrapper", EntryPoint="GetMonitors", CharSet = CharSet.Unicode)]
    //static extern String GetMonitors();
    [DllImport("WMIWrapper", EntryPoint = "GetMonitor", CharSet = CharSet.Unicode)]
    static extern string GetMonitor();

    // Use this for initialization
    void Start () {
        Debug.Log(GetMonitor());
        Debug.Log ("Cock");

    }

    // Update is called once per frame
    void Update () {

    }


}

Ich versuche also, diese Member-Funktionen aus dem Unity-Skript aufzurufen und erhalte dieEntryPointNotFoundExeption Error. Ich dachte, es liege vielleicht daran, dass Sie keine Member-Funktionen exportieren konnten. Deshalb habe ich versucht, "Interface.cpp" zu schreiben, um diese Funktionen auszuführen und das Ergebnis zurückzugeben, aber das gibt den gleichen Fehler zurück.

AKTUALISIEREN

Per Vorschlag habe ich meine C ++ Funktionen auf dieses Format umgestellt

void WMIWrapper::CreateCOM(wchar_t* err, int errLength)
    {
        .../Determine wstringstream ERRStream


        wcscpy_s(err, errLength, ERRStream.str().c_str());

    }

Und mein C # gefällt mir so:

public class HardwareDiagnostics : MonoBehaviour {

    [DllImport( "WMIWrapper", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
    private static extern void CreateCOM(StringBuilder str, int length);

    [DllImport( "WMIWrapper", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
    private static extern void CreateService(StringBuilder str, int length);

    [DllImport( "WMIWrapper", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
    private static extern void GetMonitors(StringBuilder str, int length);

    // Use this for initialization
    void Start () {
        StringBuilder buffer = new StringBuilder(255);

        CreateCOM(buffer, buffer.Capacity);
        Debug.Log(buffer.ToString());

        CreateService(buffer, buffer.Capacity);
        Debug.Log(buffer.ToString());

        GetMonitors(buffer, buffer.Capacity);
        Debug.Log(buffer.ToString());

    }

    // Update is called once per frame
    void Update () {

    }


}

Ich erhalte jedoch immer noch "EntryPointNotFoundExeption", wenn ich die erste Funktion, CreateCOM (), aufrufe.