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(0, COINIT_MULTITHREADED); if (FAILED(hres)) { return -1; } hres = CoInitializeSecurity(NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_DEFAULT, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, NULL); if (FAILED(hres)) { CoUninitialize(); return -1; } IWbemLocator *pLoc = NULL; hres = CoCreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID *)&pLoc); if (FAILED(hres)) { CoUninitialize(); return -1; } IWbemServices *pSvc = NULL; hres = pLoc->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), NULL, NULL, 0, NULL, 0, 0, &pSvc); if (FAILED(hres)) { pLoc->Release(); CoUninitialize(); return -1; } 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 -1; } 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 -1; } IWbemClassObject *pclsObj = NULL; ULONG uReturn = 0; while (pEnumerator) { HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, &pclsObj, &uReturn); if (0 == uReturn) { break; } VARIANT vtProp; hr = pclsObj->Get(L"Version", 0, &vtProp, 0, 0); WcharToChar(vtProp.bstrVal, pSystemVersion, 64); VariantClear(&vtProp); pclsObj->Release(); } pSvc->Release(); pLoc->Release(); pEnumerator->Release(); CoUninitialize(); return 0; } int _tmain(int argc, _TCHAR* argv[]) { char pVersion[20]; int retcode = 0; const char* s = "10.0."; char *p; retcode = GetSystemVersion(pVersion); if(retcode == 0) { p = strstr(pVersion,s); if(p!=NULL) { cout << "Current Windows is 2016 Server! " << endl; getchar(); return 2; } else { cout << "Current Windows is not 2016 Server! " << endl; getchar(); return 0; } } return 0; }