Попробуйте функции SetupDi_, посмотрите здесь , например.
HDEVINFO WinDeviceHelper::getDevInfoForClass(QString devClassName,DWORD& dwCount)
{
//DWORD dwGuids = 0;
SetupDiClassGuidsFromNameW( qPrintableW(devClassName), 0, 0, &dwCount );
//emit sSearchStarted(dwGuids);
if(dwCount)
{
GUID* pGuids = new GUID[dwCount];
BOOL success = SetupDiClassGuidsFromNameW( qPrintableW(devClassName), pGuids, dwCount, &dwCount );
HDEVINFO hDevInfoSet = SetupDiGetClassDevsW( pGuids, NULL, NULL, DIGCF_PRESENT);
delete [] pGuids;
return hDevInfoSet;
}
else
{
return NULL;
}
}
bool WinDeviceHelper::getDeviceRegistryString(HDEVINFO hDevInfoSet,SP_DEVINFO_DATA &devInfo,DWORD propertyType,QString& propValue)
{
DWORD dwType = 0;
DWORD requiredSize=0;
propValue="";
BOOL result=SetupDiGetDeviceRegistryPropertyW( hDevInfoSet, &devInfo, propertyType, &dwType, NULL, NULL, &requiredSize);
if ((result==ERROR_INVALID_DATA) || ((dwType!=REG_MULTI_SZ)&&(dwType!=REG_SZ)) || (requiredSize==0) )
{
return false;
//throw std::exception(__FILE__":"__LINE__" "__FUNCDNAME__": Error reading registry info");
}
size_t strSize=requiredSize/sizeof(wchar_t)+1;
wchar_t* requestedData = new wchar_t[strSize];// буфер
result=SetupDiGetDeviceRegistryPropertyW( hDevInfoSet, &devInfo, propertyType, &dwType,reinterpret_cast<PBYTE>(requestedData), requiredSize, &requiredSize);
if(result==TRUE )
{
propValue=QString::fromWCharArray(requestedData,wcslen(requestedData));
}
else
{
Logger::logError(QString("WinDeviceHelper::getDeviceRegistryString: SetupDiGetDeviceRegistryPropertyW failed with error %1").arg(GetLastError()));
}
delete[]requestedData;
return (result==TRUE );
}
bool WinDeviceHelper::getVendorAndDeviceIds(HDEVINFO hDevInfoSet,SP_DEVINFO_DATA &devInfo,QString& vendorId, QString& deviceId)
{
QString dataStr;
if(getDeviceRegistryString(hDevInfoSet,devInfo,SPDRP_HARDWAREID,dataStr))
{
dataStr=dataStr.toUpper();
QRegExp vidpid("(VID_)[0-9A-F]{4}(&PID_)[0-9A-F]{4}");
int pos=dataStr.indexOf(vidpid);
if(pos>=0)
{
vendorId=dataStr.mid(pos+4,4);
pos+=8;
pos+=5;
deviceId=dataStr.mid(pos,4);
return true;
}
}
return false;
}
часть использования
DWORD dwGuids = 0;
HDEVINFO hDevInfoSet = getDevInfoForClass(drvClass,dwGuids);
//Logger::logTrace(QString("WinDeviceHelper::searchForPort() found %1 port drivers for type %2").arg(dwGuids).arg(drvClass));
if(dwGuids)
{
BOOL bMoreItems = TRUE;
int nIndex = 0;
SP_DEVINFO_DATA devInfo;
devInfo.cbSize = sizeof( SP_DEVINFO_DATA );
while( SetupDiEnumDeviceInfo( hDevInfoSet, nIndex, &devInfo ) && ( nIndex != -1 ) )
{
//Logger::logTrace(QString("WinDeviceHelper::searchForPort() enumerating ports. current index: %1").arg(nIndex));
QString iVid,iPid;
QString fName;
if( getVendorAndDeviceIds(hDevInfoSet,devInfo,iVid,iPid)
enter code here
}
}