如何獲得數據IWbemClassObject **

Question

你好如何從這個數組中獲取數據？或者如何獲取我可以提取的所有名稱？

hres = pSvc->ExecNotificationQueryAsync(_bstr_t("WQL"), _bstr_t("SELECT * " 
      "FROM __InstanceCreationEvent WITHIN 1 WHERE TargetInstance ISA 'Win32_Process'"), 
     WBEM_FLAG_SEND_STATUS, NULL, pStubSink); 
for (int i = 0; i < lObjectCount; i++) 
{ 
    VARIANT varName; 
    hres = apObjArray[i]->Get(_bstr_t(L"__CLASS"), 
     0, &varName, 0, 0); 

    if (FAILED(hres)) 
    { 
     cout << "Failed to get the data from the query" 
      << " Error code = 0x" 
      << hex << hres << endl; 
     return WBEM_E_FAILED;  // Program has failed. 
    } 

    printf("Name: %ls\n", V_BSTR(&varName)); 
} 

Answer 1

您的代碼不工作，因爲ExecNotificationQueryAsync方法的結果必須使用IWbemObjectSink對象進行處理。試試這個MSDN示例Receiving Event Notifications Through WMI也可以使用像WMI Delphi Code Creator這樣的工具生成C++代碼來訪問WMI。