STDMETHODIMP CMELCommand::put_PortName(BSTR newVal)
{
CAtlString strPortName(newVal);
if (m_strPortName != strPortName)
{
Disconnect();
m_strPortName = strPortName;
}
return S_OK;
}
void CEnumSerial::SearchPnpKeyW9x(HKEY hkPnp, BOOL bUsbDevice, CArray<SSerInfo,SSerInfo&> &asi)
{
// Enumerate the subkeys of the given PNP key, looking for values with
// the name "PORTNAME"
// First, open HKLM\Enum
HKEY hkSubPnp = NULL;
try
{
// Enumerate the subkeys of HKLM\Enum\*\PNP050[01]
TCHAR acSubPnp[256];
DWORD dwSubPnpIndex = 0;
DWORD dwSize = sizeof(acSubPnp)/sizeof(TCHAR);
while (RegEnumKeyEx(hkPnp, dwSubPnpIndex++, acSubPnp, &dwSize,
NULL, NULL, NULL, NULL) == ERROR_SUCCESS)
{
HKEY hkSubPnp = NULL;
if (RegOpenKeyEx(hkPnp, acSubPnp, 0, KEY_READ,
&hkSubPnp) != ERROR_SUCCESS)
throw CString(_T("Could not read from HKLM\\Enum\\...\\"))
+ acSubPnp;
// Look for the PORTNAME value
char acValue[128];
dwSize = sizeof(acValue);
if (RegQueryValueEx(hkSubPnp, _T("PORTNAME"), NULL, NULL, (BYTE*)acValue,
&dwSize) == ERROR_SUCCESS)
{
CString strPortName(acValue);
// Got the portname value. Look for a friendly name.
CString strFriendlyName;
dwSize = sizeof(acValue);
if (RegQueryValueEx(hkSubPnp, _T("FRIENDLYNAME"), NULL, NULL, (BYTE*)acValue,
&dwSize) == ERROR_SUCCESS)
strFriendlyName = acValue;
// Prepare an entry for the output array.
SSerInfo si;
si.strDevPath = CString(_T("\\\\.\\")) + strPortName;
si.strPortName = strPortName;
si.strFriendlyName = strFriendlyName;
si.bUsbDevice = bUsbDevice;
// Overwrite duplicates.
BOOL bDup = FALSE;
for (int ii=0; ii<asi.GetSize() && !bDup; ii++)
{
if (asi[ii].strPortName == strPortName)
{
bDup = TRUE;
asi[ii] = si;
}
}
if (!bDup)
{
// Add an entry to the array
asi.Add(si);
}
}
RegCloseKey(hkSubPnp);
hkSubPnp = NULL;
dwSize = sizeof(acSubPnp)/sizeof(TCHAR); // restore the buffer size
}
}
catch (CString strError)
{
if (hkSubPnp != NULL)
RegCloseKey(hkSubPnp);
throw strError;
}
}
