C++通过WMI-CIMV2获取系统相应类的信息操作代码（通过WMI获取磁盘信息、获取系统时间）

以你之姓@ 2022-05-08 16:04 822阅读 0赞

1.添加对应的头文件和加载lib库

#include<WbemCli.h>
    #include<intsafe.h>
    #define SAFE_RELEASE(p) { if(p) { (p)->Release(); (p)=NULL; } }
    #pragma comment(lib, "wbemuuid.lib")

2.初始化连接至ROOT\\CIMV2

BOOL IsEnabledWmi=FALSE;
    	IWbemLocator*			pIWbemLocator = NULL;
    	IWbemServices*			pIWbemServices = NULL;
    	IEnumWbemClassObject*	pEnumCOMDevs = NULL;
    	IEnumWbemClassObject*	pEnumCOMDevs2 = NULL;
    	IWbemClassObject*		pCOMDev = NULL;
    	OSVERSIONINFOEX m_Os;
    	HRESULT hRes = S_OK;
    	ZeroMemory(&m_Os, sizeof(OSVERSIONINFOEX));
    	CoInitializeSecurity(NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_DEFAULT,
    		RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, NULL);
    	if (FAILED(CoCreateInstance(CLSID_WbemLocator, NULL, CLSCTX_INPROC_SERVER,
    		IID_IWbemLocator, (LPVOID *)&pIWbemLocator)))
    	{
    		//	CoUninitialize();
    		return;
    	}
    	else
    	{
    		long securityFlag = 0;
    		if (m_Os.dwMajorVersion >= 6 // Vista or later
    									 //	|| (m_Os.dwMajorVersion == 5 && m_Os.dwMinorVersion >= 1) // XP or later
    			)
    		{
    			securityFlag = WBEM_FLAG_CONNECT_USE_MAX_WAIT;
    		}
    
    		if (FAILED(pIWbemLocator->ConnectServer(_bstr_t(L"\\\\.\\root\\cimv2"),
    			NULL, NULL, 0L,
    			securityFlag,
    			NULL, NULL, &pIWbemServices)))
    		{
    			//	CoUninitialize();
    			return;
    		}
    		else
    		{
    			hRes = CoSetProxyBlanket(pIWbemServices, 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))
    			{
    				//	CoUninitialize();
    				CString cstr;
    				cstr.Format(_T("NG:WMI Init - %08X"), hRes);
    			}
    			else
    			{
    				IsEnabledWmi = TRUE;
    			}
    		}
    		SAFE_RELEASE(pIWbemLocator);
    	}
    	ULONG   uReturned = 1;
    	int workaround = 0;

3.如果IsEnabledWmi为TRUE表示连接成功可以开始进行获取相应类的系统信息了，

类名可参考：《[https://mp.csdn.net/postedit/83053935][https_mp.csdn.net_postedit_83053935]》

4. 获取示例 ：

4.1：获取电脑插入的磁盘相应信息对应代码为（类为：Win32\_DiskDrive）：

hRes = pIWbemServices->ExecQuery(_bstr_t(L"WQL"),
    		_bstr_t(L"SELECT * FROM Win32_DiskDrive"), WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &pEnumCOMDevs);
    	if (FAILED(hRes))
    	{
    		return;
    	}
    	if (!pEnumCOMDevs)
    	{
    		return;
    	}
    	while (SUCCEEDED(pEnumCOMDevs->Next(10000, 1, &pCOMDev, &uReturned)))
    	{
    		if (uReturned != 1)
    		{
    			break;
    		}
    		CString mapping1, mapping2;
    		CString model, deviceId, diskSize, mediaType, interfaceTypeWmi, pnpDeviceId, firmware;
    		INT physicalDriveId = -1, scsiPort = -1, scsiTargetId = -1, scsiBus = -1;
    		BOOL flagTarget = FALSE;
    		BOOL flagBlackList = FALSE;
    		BOOL flagInterfaceTypeUASP = FALSE;
    		DWORD siliconImageType = 0;
    
    		try
    		{
    			VARIANT pVal;
    			VariantInit(&pVal);
    			if (pCOMDev->Get(L"Size", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				diskSize = pVal.bstrVal;
    				VariantClear(&pVal);
    			}
    
    			if (pCOMDev->Get(L"DeviceID", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				deviceId = pVal.bstrVal;
    				deviceId.Replace(_T("\\"), _T("\\\\"));
    				if (_ttoi(deviceId.Right(2)) >= 10)
    				{
    					physicalDriveId = _ttoi(deviceId.Right(2));
    				}
    				else
    				{
    					physicalDriveId = _ttoi(deviceId.Right(1));
    				}
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"Model", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				model = pVal.bstrVal;
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"FirmwareRevision", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				firmware = pVal.bstrVal;
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"SCSIPort", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				scsiPort = pVal.intVal;
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"SCSITargetId", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				scsiTargetId = pVal.intVal;
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"SCSIBus", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				scsiBus = pVal.intVal;
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"MediaType", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				mediaType = pVal.bstrVal;
    				mediaType.MakeLower();
    				VariantClear(&pVal);
    
    				cmd=one;no=994;id=diskinfo#994
    				if (model.Find(_T("SanDisk Extreme")) == 0)
    				{
    					flagTarget = TRUE;
    				}
    				cmd=one;no=1198;id=diskinfo#1198
    				else if (model.Find(_T("Kingston DT Ultimate")) == 0)
    				{
    					flagTarget = TRUE;
    				}
    				//else if (FlagUsbMemory)
    				//{
    				//	flagTarget = TRUE;
    				//	detectUSBMemory = TRUE;
    				//}
    				else if (mediaType.Find(_T("removable")) >= 0 || mediaType.IsEmpty())
    				{
    					flagTarget = FALSE;
    				}
    				else
    				{
    					flagTarget = TRUE;
    				}
    			}
    			if (pCOMDev->Get(L"InterfaceType", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				interfaceTypeWmi = pVal.bstrVal;
    				VariantClear(&pVal);
    			}
    
    			// Added 3.3.1 (Controller Black List Support)
    			if (pCOMDev->Get(L"PNPDeviceID", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				pnpDeviceId = pVal.bstrVal;
    				pnpDeviceId.MakeUpper();
    				VariantClear(&pVal);
    
    				// Is UAS Controller (5.2.0-)
    
    
    				// Is Silicon Image Controller
    
    
    	
    
    			}
    
    			SAFE_RELEASE(pCOMDev);
    
    		
    		}
    		catch (...)
    		{
    		}
    	}

4.2获取系统时间（类为：Win32\_CurrentTime）：

hRes = pIWbemServices->ExecQuery(_bstr_t(L"WQL"),
    		_bstr_t(L"select * from Win32_CurrentTime"), WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &pEnumCOMDevs);
    	if (FAILED(hRes))
    	{
    		return;
    	}
    	if (!pEnumCOMDevs)
    	{
    		return;
    	}
    	while (SUCCEEDED(pEnumCOMDevs->Next(10000, 1, &pCOMDev, &uReturned)))
    	{
    		if (uReturned != 1)
    		{
    			break;
    		}
    		CString year,month,day, hour, minute,second, quarter, dayOfWeek,weekInMonth;
    		CString model, deviceId, diskSize, mediaType, interfaceTypeWmi, pnpDeviceId, firmware;
    		INT physicalDriveId = -1, scsiPort = -1, scsiTargetId = -1, scsiBus = -1;
    		BOOL flagTarget = FALSE;
    		BOOL flagBlackList = FALSE;
    		BOOL flagInterfaceTypeUASP = FALSE;
    		DWORD siliconImageType = 0;
    
    		try
    		{
    			VARIANT pVal;
    			VariantInit(&pVal);
    			if (pCOMDev->Get(L"Day", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				day.Format(L"%d", pVal.intVal) ;
    				VariantClear(&pVal);
    			}
    
    			if (pCOMDev->Get(L"DayOfWeek", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				
    				dayOfWeek.Format(L"%d", pVal.intVal);
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"Hour", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				hour.Format(L"%d", pVal.intVal);
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"Minute", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				minute.Format(L"%d", pVal.intVal);
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"Month", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				month.Format(L"%d", pVal.intVal);
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"Quarter", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				quarter.Format(L"%d", pVal.intVal);
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"Second", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				second.Format(L"%d", pVal.intVal);
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"Year", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				year.Format(L"%d", pVal.intVal);
    				VariantClear(&pVal);
    			}
    			if (pCOMDev->Get(L"WeekInMonth", 0L, &pVal, NULL, NULL) == WBEM_S_NO_ERROR && pVal.vt > VT_NULL)
    			{
    				weekInMonth.Format(L"%d", pVal.intVal);
    				VariantClear(&pVal);
    			}
    			SAFE_RELEASE(pCOMDev);
    			CString currentTime;
    			currentTime.Format(L"现在是%s年%s月%s日,时间：%s:%s:%s 星期 %s,%s月第%s周",year,month,day,hour,minute,second,dayOfWeek, month,weekInMonth);
    		    //L"现在是2018年10月15日,时间：11:22:51 星期 1,10月第3周"
    		}
    		catch (...)
    		{
    		}
    	}

[https_mp.csdn.net_postedit_83053935]: https://mp.csdn.net/postedit/83053935