4
MSDN 웹 사이트에서 일부 WMI C++ 응용 프로그램 예제를 발견했습니다. 내가 복사하고 잘 작동 Win32 콘솔 응용 프로그램으로 응용 프로그램을 실행할 때QCroreApplication QApplication with WMI
나는 코드 형태를 아래의 링크
http://msdn.microsoft.com/en-us/library/aa390423%28v=VS.85%29.aspx
을 시도했습니다.
제가 Qt의 애플리케이션에 유타 동일한 코드
제가 의 QApplication anApplication 사용할 때 (는 argc, ARGV); 내 코드에서 작동하지 않습니다
하지만 QCroreApplication을 사용하는 경우 응용 프로그램 (argc, argv); 그것은 작동 중입니다
"나는 QApplication으로 QCroreApplication을 변경할 때 아래와 같은 오류가 발생합니다. 아래의 소스 코드가 작동하지 않고"COM 라이브러리를 초기화하지 못했습니다. "와 같은 오류가 발생합니다. 오류 코드 = 0x80010106 "
어떤 제안 또는 그 그래서 받고있는 오류가 COM 이미 초기화되기 때문입니다.의 QApplication은 생성자에서 OleInitialize를 호출하지만, QCoreApplication하지 않는
#define _WIN32_DCOM
#include <iostream>
using namespace std;
#include <comdef.h>
#include <Wbemidl.h>
# pragma comment(lib, "wbemuuid.lib")
// Qt Includes
#include <QtCore>
#include <QtGui>
//----------------------------------------------------------------------------
// Main Function
int main(int a_argc, char *a_argv[])
//************************************
{
// initialize the application
QApplication anapplication(a_argc, a_argv);
HRESULT hres;
// Step 1: --------------------------------------------------
// Initialize COM. ------------------------------------------
hres = CoInitializeEx(0, COINIT_MULTITHREADED);
if (FAILED(hres))
{
cout << "Failed to initialize COM library. Error code = 0x"
<< hex << hres << endl;
return 1; // Program has failed.
}
// Step 2: --------------------------------------------------
// Set general COM security levels --------------------------
// Note: If you are using Windows 2000, you need to specify -
// the default authentication credentials for a user by using
// a SOLE_AUTHENTICATION_LIST structure in the pAuthList ----
// parameter of CoInitializeSecurity ------------------------
hres = CoInitializeSecurity(
NULL,
-1, // COM authentication
NULL, // Authentication services
NULL, // Reserved
RPC_C_AUTHN_LEVEL_DEFAULT, // Default authentication
RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation
NULL, // Authentication info
EOAC_NONE, // Additional capabilities
NULL // Reserved
);
if (FAILED(hres))
{
cout << "Failed to initialize security. Error code = 0x"
<< hex << hres << endl;
CoUninitialize();
return 1; // Program has failed.
}
// Step 3: ---------------------------------------------------
// Obtain the initial locator to WMI -------------------------
IWbemLocator *pLoc = NULL;
hres = CoCreateInstance(
CLSID_WbemLocator,
0,
CLSCTX_INPROC_SERVER,
IID_IWbemLocator, (LPVOID *) &pLoc);
if (FAILED(hres))
{
cout << "Failed to create IWbemLocator object."
<< " Err code = 0x"
<< hex << hres << endl;
CoUninitialize();
return 1; // Program has failed.
}
// Step 4: -----------------------------------------------------
// Connect to WMI through the IWbemLocator::ConnectServer method
IWbemServices *pSvc = NULL;
// Connect to the root\cimv2 namespace with
// the current user and obtain pointer pSvc
// to make IWbemServices calls.
hres = pLoc->ConnectServer(
_bstr_t(L"ROOT\\CIMV2"), // Object path of WMI namespace
NULL, // User name. NULL = current user
NULL, // User password. NULL = current
0, // Locale. NULL indicates current
NULL, // Security flags.
0, // Authority (e.g. Kerberos)
0, // Context object
&pSvc // pointer to IWbemServices proxy
);
if (FAILED(hres))
{
cout << "Could not connect. Error code = 0x"
<< hex << hres << endl;
pLoc->Release();
CoUninitialize();
return 1; // Program has failed.
}
cout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;
// Step 5: --------------------------------------------------
// Set security levels on the proxy -------------------------
hres = CoSetProxyBlanket(
pSvc, // Indicates the proxy to set
RPC_C_AUTHN_WINNT, // RPC_C_AUTHN_xxx
RPC_C_AUTHZ_NONE, // RPC_C_AUTHZ_xxx
NULL, // Server principal name
RPC_C_AUTHN_LEVEL_CALL, // RPC_C_AUTHN_LEVEL_xxx
RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
NULL, // client identity
EOAC_NONE // proxy capabilities
);
if (FAILED(hres))
{
cout << "Could not set proxy blanket. Error code = 0x"
<< hex << hres << endl;
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 1; // Program has failed.
}
// Step 6: --------------------------------------------------
// Use the IWbemServices pointer to make requests of WMI ----
// For example, get the name of the operating system
IEnumWbemClassObject* pEnumerator = NULL;
hres = pSvc->ExecQuery(
bstr_t("WQL"),
bstr_t("SELECT * FROM Win32_USBControllerDevice"),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumerator);
//ExecQuery(L"WQL", L"SELECT * FROM Win32_LogicalDisk", WBEM_FLAG_FORWARD_ONLY, NULL, &iter);
if (FAILED(hres))
{
cout << "Query for operating system name failed."
<< " Error code = 0x"
<< hex << hres << endl;
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 1; // Program has failed.
}
// Step 7: -------------------------------------------------
// Get the data from the query in step 6 -------------------
IWbemClassObject *pclsObj;
ULONG uReturn = 0;
while (pEnumerator)
{
HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,
&pclsObj, &uReturn);
if(FAILED(hr)||0 == uReturn)
{
break;
}
VARIANT vtProp;
// Get the value of the Name property
/*hr = pclsObj->Get(L"VolumeName", 0, &vtProp, 0, 0);
wcout << " VolumeName : " << vtProp.bstrVal << endl;
VariantClear(&vtProp);*/
if (FAILED(pclsObj->Get(L"Antecedent", 0, &vtProp, 0, 0)))
{
cout<<"The specified property is not found."<<endl;
}
else
{
wcout <<vtProp.bstrVal << endl;
}
pclsObj->Release();
}
// Cleanup
// ========
pSvc->Release();
pLoc->Release();
pEnumerator->Release();
// pclsObj->Release();
CoUninitialize();
// return 0; // Program successfully completed.
//execute the application
int anInt = anapplication.exec();
return anInt;
}
//-----------------------------------------------------------------------------