C++通用WMI接口实现获取Windows操作系统内核版本号

作为一名Windows开发者，能熟练掌握WMI技术，在开发Windows应用程序的时候往往能够事半功倍。今天来给大家分享一个使用WMI来获取Windows操作系统内核版本号的例子。

首先我们打开WMI测试器，连接ROOT\CIMV2命名空间，输入WQL查询语句SELECT * FROM Win32_OperatingSystem，

然后在查询的结果里我们找到Version属性，发现内核版本号为10.0.16299，即为我们所需要的结果。

那么，这个结果如何在程序中被使用，如何用C++语言来实现呢？首先我们要包含comdef.h和Wbemidl.h头文件，然后调用wbemuuid.lib库帮助我们实现WMI的功能，代码及测试程序如下：

#include <iostream>
#include <Windows.h>
#include <stdlib.h>
#include <string>
#include <comdef.h>
#include <Wbemidl.h>

using namespace std;

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

int GetSystemVersion(char* pSystemVersion)
{
    HRESULT hres;
    hres = CoInitializeEx(, COINIT_MULTITHREADED);
    if (FAILED(hres))
    {
        return -;
    }

    hres = CoInitializeSecurity(NULL, -, NULL, NULL, RPC_C_AUTHN_LEVEL_DEFAULT, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, NULL);
    if (FAILED(hres))
    {
        CoUninitialize();
        return -;
    }

    IWbemLocator *pLoc = NULL;
    hres = CoCreateInstance(CLSID_WbemLocator, , CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID *)&pLoc);
    if (FAILED(hres))
    {
        CoUninitialize();
        return -;
    }

    IWbemServices *pSvc = NULL;
    hres = pLoc->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), NULL, NULL, , NULL, , , &pSvc);
    if (FAILED(hres))
    {
        pLoc->Release();
        CoUninitialize();
        return -;
    }

    hres = CoSetProxyBlanket(pSvc, RPC_C_AUTHN_WINNT, RPC_C_AUTHZ_NONE, NULL, RPC_C_AUTHN_LEVEL_CALL, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE);
    if (FAILED(hres))
    {
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        return -;
    }

    IEnumWbemClassObject* pEnumerator = NULL;
    hres = pSvc->ExecQuery(bstr_t("WQL"), bstr_t("SELECT * FROM Win32_OperatingSystem"), WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &pEnumerator);
    if (FAILED(hres))
    {
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        return -;
    }

    IWbemClassObject *pclsObj = NULL;
    ULONG uReturn = ;
    while (pEnumerator)
    {
        HRESULT hr = pEnumerator->Next(WBEM_INFINITE, , &pclsObj, &uReturn);
        if ( == uReturn)
        {
            break;
        }

        VARIANT vtProp;
        hr = pclsObj->Get(L"Version", , &vtProp, , );
        WcharToChar(vtProp.bstrVal, pSystemVersion, );
        VariantClear(&vtProp);
        pclsObj->Release();
    }
    pSvc->Release();
    pLoc->Release();
    pEnumerator->Release();
    CoUninitialize();

    return ;
}

int _tmain(int argc, _TCHAR* argv[])
{
    char pVersion[];
    int retcode = ;
    const char* s = "10.0.";
    char *p;
    retcode = GetSystemVersion(pVersion);
    if(retcode == )
    {
        p = strstr(pVersion,s);
        if(p!=NULL)
        {
            cout << "Current Windows is 2016 Server! " << endl;
            getchar();
            return ;
        }
        else
        {
            cout << "Current Windows is not 2016 Server! " << endl;
            getchar();
            return ;
        }
    }
    return ;
}