WMI Registry Methods from StdRegProv

Hello,

I found several examples to use SetStringValue and SetDWORDValue in
Default\StdRegProv.
They all are in VB language and i'm using C++ in my applications.


For example I try to disable UAC on VISTA OS boxes remotly but I have
a ReturnValue = 0 each time I try to execute my Method. I think
parameters are right but It puts value "3" in the registry entry.


Could someone help me ?


hres = CoCreateInstance(CLSID_WbemLocator,
0,
CLSCTX_INPROC_SERVER,
IID_IWbemLocator, (LPVOID *) &ppiWmiLoc);


IWbemServices *pSvc = NULL;
CComBSTR bstrserv(L"\\\\VISTABOX\\root\\default");
CComBSTR bstrUsername(m_csUserName), bstrPassword(m_csPassword);


hres = ppiWmiLoc->ConnectServer(bstrserv, NULL, NULL,0, NULL, 0, 0,
&pSvc);
if(SUCCEEDED(hres))
{
hres = CoSetProxyBlanket(pSvc, RPC_C_AUTHN_WINNT,
RPC_C_AUTHZ_NONE,
NULL, RPC_C_AUTHN_LEVEL_CALL,


RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE);


if(SUCCEEDED(hres))
{
BSTR MethodName = SysAllocString(L"SetStringValue");
BSTR ClassName = SysAllocString(L"StdRegProv");


IWbemClassObject* pClass = NULL;
hres = pSvc->GetObject(ClassName, 0, NULL, &pClass,
NULL);


if(SUCCEEDED(hres))
{
IWbemClassObject* pInParamsDefinition = NULL;
hres = pClass->GetMethod(MethodName, 0,
&pInParamsDefinition, NULL);


if(SUCCEEDED(hres))
{
IWbemClassObject* pClassInstance =
NULL;
hres = pInParamsDefinition-
>SpawnInstance(0,


&pClassInstance);


if(SUCCEEDED(hres))
{
VARIANT varCommand;
varCommand.vt = VT_BSTR;
varCommand.bstrVal =
L"SOFTWARE
\Microsoft\Windows\CurrentVersion\Policies\System\ \";


hres =
pClassInstance-



>Put(L"sSubKeyName", 0,


&varCommand, 0);

varCommand.vt = VT_BSTR;
varCommand.bstrVal =
L"legalnoticecaption";


hres = pClassInstance-
>Put(L"sValueName", 0,

&varCommand, 0);


VARIANT lvar;
VariantInit(&lvar);
lvar.vt = VT_BSTR;
lvar.bstrVal = L"Notice";


// Store the value for the in
parameters
hres = pClassInstance-
>Put(L"sValue", 0,
&lvar,
0);


// Execute Method
IWbemClassObject* pOutParams =
NULL;
hres = pSvc-
>ExecMethod(ClassName,


MethodName, 0, NULL, pClassInstance,


&pOutParams, NULL);


if (FAILED(hres))
{
MessageBox("Command


Failed","SetStringValue",MB_OK);
}
else
{
CComBSTR
bstrClassObj;
hres = pOutParams-
>GetObjectText(0,


&(bstrClassObj.m_str));


USES_CONVERSION;


std::string
mess(OLE2T(bstrClassObj));



MessageBox(mess.c_str(),"Error


message",MB_OK);
}
}
else
AfficheErreur(hres);
}
else
AfficheErreur(hres);
}
else
AfficheErreur(hres);
}