C++ Builder 通过 WMI 获取系统信息
Victor Chen, (C++
爱好者)
WMI: Windows Management Instrumentation (Windows 管理工具)
通过 WMI 可以获取主板、BIOS、磁盘、显卡、网络等几乎所有的系统信息。
利用这个工具可以管理本地或客户端系统中几乎所有的信息。
很多网络管理工具都是基于WMI开发的。在 Windows NT/2000/XP/2003 都有这个工具,
在 Windows 98 里面可以选择安装这个工具。
BCB 的 WMI 库文件 wbemuuid.lib 由本站提供, 包含在本页下面的程序源码下载里面
① 初始化 COM 接口:
访问 WMI, 必须先初始化 COM 接口, 在程序的一开始调用 CoInitialize(NULL);
初始化, 在结束时调用 CoUninitialize(); 释放资源。
这两个函数在 #include <comdef.h> 里面定义。
② 获取访问 WMI 权限:
CoInitializeSecurity(NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_PKT,
RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, 0);
如果这个函数返回 S_OK 获取权限成功, 否则为失败。
③ 通过 IWbemLocator 和 IWbemServices 这两个 COM 接口访问 WMI, 获取系统信息:
这个函数的参数: lpList 返回信息, wsClass 为要查找的系统信息类, 这些 COM
接口在 #include <wbemidl.h> 里定义。
void GetWmiInfo(TStrings *lpList, WideString wsClass) { IWbemLocator *pWbemLocator = NULL; if(CoCreateInstance(CLSID_WbemAdministrativeLocator, NULL, CLSCTX_INPROC_SERVER|CLSCTX_LOCAL_SERVER, IID_IUnknown, (void**)&pWbemLocator) == S_OK) { IWbemServices *pWbemServices = NULL; WideString wsNamespace = (L"root\\cimv2"); if(pWbemLocator->ConnectServer(wsNamespace, NULL, NULL, NULL, 0, NULL, NULL, &pWbemServices) == S_OK) { IEnumWbemClassObject *pEnumClassObject = NULL; WideString wsWQL=L"WQL", wsQuery=WideString(L"Select * from ")+wsClass; if(pWbemServices->ExecQuery(wsWQL, wsQuery, WBEM_FLAG_RETURN_IMMEDIATELY,NULL, &pEnumClassObject) == S_OK) { IWbemClassObject *pClassObject = NULL; ULONG uCount = 1, uReturned; if(pEnumClassObject->Reset() == S_OK) { int iEnumIdx = 0; while(pEnumClassObject->Next(WBEM_INFINITE, uCount, &pClassObject, &uReturned) == S_OK) { lpList->Add("---------------- ["+IntToStr(iEnumIdx)+"] -----------------");
SAFEARRAY *pvNames = NULL; if(pClassObject->GetNames(NULL, WBEM_FLAG_ALWAYS | WBEM_MASK_CONDITION_ORIGIN, NULL, &pvNames) == S_OK) { long vbl, vbu; SafeArrayGetLBound(pvNames, 1, &vbl); SafeArrayGetUBound(pvNames, 1, &vbu); for(long idx=vbl; idx<=vbu; idx++) { long aidx = idx; wchar_t *wsName = 0; VARIANT vValue; VariantInit(&vValue); SafeArrayGetElement(pvNames, &aidx, &wsName);
BSTR bs = SysAllocString(wsName); HRESULT hRes = pClassObject->Get(bs, 0, &vValue, NULL, 0); SysFreeString(bs);
if(hRes == S_OK) { AnsiString s; Variant v = *(Variant*)&vValue; if(v.IsArray()) { for(int i=v.ArrayLowBound(); i<=v.ArrayHighBound(); i++) { Variant a = v.GetElement(i); if(!s.IsEmpty()) s+=", "; s+=VarToStr(a); } } else { s = VarToStr(v); } lpList->Add(AnsiString(wsName)+"="+s); }
VariantClear(&vValue); SysFreeString(wsName); } } if(pvNames)SafeArrayDestroy(pvNames); iEnumIdx++; } } if(pClassObject)pClassObject->Release(); } if(pEnumClassObject)pEnumClassObject->Release(); } if(pWbemServices)pWbemServices->Release(); } if(pWbemLocator)pWbemLocator->Release(); }
//---------------------------------------------------------------------------
// 通过 WIN32_bios 获取 BIOS 信息:
void __fastcall TForm1::Button1Click(TObject *Sender)
{
Memo1->Lines->Add("==================
[WIN32_bios] =================");
GetWmiInfo(Memo1->Lines, "WIN32_bios");
Memo1->Lines->Add("");
}
WMI 可以访问的信息类型有: Win32_1394Controller Win32_BaseBoard
Win32_Battery Win32_BIOS
Win32_Bus
Win32_CacheMemory
Win32_CDROMDrive
Win32_CurrentProbe
Win32_DesktopMonitor
Win32_DeviceMemoryAddress
Win32_DiskDrive
Win32_DisplayConfiguration
Win32_DisplayControllerConfiguration
Win32_DMAChannel
Win32_Fan
Win32_FloppyController
Win32_FloppyDrive
Win32_HeatPipe
Win32_IDEController
Win32_InfraredDevice
Win32_IRQResource
Win32_Keyboard
Win32_MemoryArray
Win32_MemoryDevice
Win32_MotherboardDevice
Win32_NetworkAdapter
Win32_NetworkAdapterConfiguration
Win32_OnBoardDevice
Win32_ParallelPort
Win32_PCMCIAController
Win32_PhysicalMemory
Win32_PhysicalMemoryArray
Win32_PnPEntity
Win32_PointingDevice
Win32_PortableBattery
Win32_PortConnector
Win32_PortResource
Win32_POTSModem
Win32_PowerManagementEvent
Win32_Printer
Win32_PrinterConfiguration
Win32_PrintJob
Win32_Processor
Win32_Refrigeration
Win32_SerialPort
Win32_SerialPortConfiguration
Win32_SMBIOSMemory
Win32_SoundDevice
Win32_SystemEnclosure
Win32_SystemMemoryResource
Win32_SystemSlot
Win32_TapeDrive
Win32_TemperatureProbe
Win32_UninterruptiblePowerSupply
Win32_USBController
Win32_VideoConfiguration
Win32_VideoController
Win32_VoltageProbe
以上类型(字符串值)通过前面写的函数 GetWmiInfo 可以得到相应的信息, 例如 GetWmiInfo(Memo1->Lines,
"WIN32_bios");
BCB
通过 WMI 获取系统信息 - 下载程序源代码 (包含本站提供的
WMI for BCB 库文件) 222,311 字节 (下载
12237
次)
|