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//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "UWmiSample.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm45 *Form45;
//---------------------------------------------------------------------------
__fastcall TForm45::TForm45(TComponent* Owner)
: TForm(Owner),
pLoc(0),
pSvc(0),
pEnumerator(0)
{
// hres = CoInitialize(NULL);
// Initialize COM. hres = CoInitializeEx(0, COINIT_MULTITHREADED);
}
//---------------------------------------------------------------------------
void __fastcall TForm45::Button1Click(TObject *Sender)
{
hres= CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
if(FAILED(hres))
{
MessageDlg("Failed to initialize COM. Error code = 0x"+IntToHex((int)hres,8), mtError, TMsgDlgButtons() << mbOK, 0);
CoUninitialize();
return;
}
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))
{
MessageDlg("Failed to initialize security. Error code = 0x"+IntToHex((int)hres,8), mtError, TMsgDlgButtons() << mbOK, 0);
CoUninitialize();
return;
}
hres = CoCreateInstance(CLSID_WbemLocator, 0,
CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID *) &pLoc);
if (FAILED(hres))
{
MessageDlg("WMI Access Error 0x"+IntToHex((int)hres,8), mtError, TMsgDlgButtons() << mbOK, 0);
CoUninitialize();
return;
}
hres = pLoc->ConnectServer(
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))
{
MessageDlg("WMI Server Access Error 0x"+IntToHex((int)hres,8), mtError, TMsgDlgButtons() << mbOK, 0);
pLoc->Release();
CoUninitialize();
return;
}
hres = CoSetProxyBlanket(
pSvc, // the proxy to set
RPC_C_AUTHN_WINNT, // authentication service
RPC_C_AUTHZ_NONE, // authorization service
NULL, // Server principal name
RPC_C_AUTHN_LEVEL_CALL, // authentication level
RPC_C_IMP_LEVEL_IMPERSONATE, // impersonation level
NULL, // client identity
EOAC_NONE // proxy capabilities
);
if (FAILED(hres))
{
MessageDlg("WMI Server Access Error 0x"+IntToHex((int)hres,8), mtError, TMsgDlgButtons() << mbOK, 0);
pLoc->Release();
CoUninitialize();
return;
}
hres = pSvc->ExecQuery(
L"WQL",
L"SELECT * FROM Win32_Process",
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumerator);
if (FAILED(hres))
{
MessageDlg("Query failed. Error code = 0x"+IntToHex((int)hres,8), mtError, TMsgDlgButtons() << mbOK, 0);
pSvc->Release();
pLoc->Release();
CoUninitialize();
return ; // 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(0 == uReturn)
{
break;
}
VARIANT vtProp;
// Get the value of the Name property
hr = pclsObj->Get(L"Name", 0, &vtProp, 0, 0);
Memo1->Lines->Add("Process Name: "+UnicodeString(vtProp.bstrVal));
VariantClear(&vtProp);
}
pSvc->Release();
pLoc->Release();
CoUninitialize();
}
//--------------------------------------------------------------------------- |
Probleme de transtypage lors de l'utilisation de WMI
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