//static
void QextSerialEnumerator::setupAPIScan(QList<QextPortInfo> & infoList)
{
HDEVINFO devInfo = INVALID_HANDLE_VALUE;
DWORD dwGuids = 0;
SetupDiClassGuidsFromName(TEXT("Ports"), NULL, 0, &dwGuids);
if (dwGuids == 0)
{
qCritical("SetupDiClassGuidsFromName failed. Error code: %ld", GetLastError());
return;
}
GUID *pGuids = new GUID[dwGuids];
if (!SetupDiClassGuidsFromName(TEXT("Ports"), pGuids, dwGuids, &dwGuids))
{
qCritical("SetupDiClassGuidsFromName second call failed. Error code: %ld", GetLastError());
return;
}
devInfo = SetupDiGetClassDevs(pGuids, NULL, NULL, DIGCF_PRESENT);
if(devInfo == INVALID_HANDLE_VALUE)
{
qCritical("SetupDiGetClassDevs failed. Error code: %ld", GetLastError());
return;
}
//enumerate the devices
bool ok = true;
SP_DEVICE_INTERFACE_DATA ifcData;
ifcData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
SP_DEVICE_INTERFACE_DETAIL_DATA * detData = NULL;
SP_DEVINFO_DATA devData = {sizeof(SP_DEVINFO_DATA)};
for (DWORD i = 0; ok; i++)
{
ok = SetupDiEnumDeviceInfo(devInfo, i, &devData);
if (ok)
{
// Got a device. Get the details.
QextPortInfo info;
info.friendName = getDeviceProperty(devInfo, & devData, SPDRP_FRIENDLYNAME);
info.physName = getDeviceProperty(devInfo, & devData, SPDRP_PHYSICAL_DEVICE_OBJECT_NAME);
info.enumName = getDeviceProperty(devInfo, & devData, SPDRP_ENUMERATOR_NAME);
//anyway, to get the port name we must still open registry directly :( ???
//Eh...
HKEY devKey = SetupDiOpenDevRegKey(devInfo, & devData, DICS_FLAG_GLOBAL, 0,
DIREG_DEV, KEY_READ);
info.portName = getRegKeyValue(devKey, TEXT("PortName"));
RegCloseKey(devKey);
if(info.portName.startsWith("COM"))
{
infoList.append(info);
}
}
else
{
if (GetLastError() != ERROR_NO_MORE_ITEMS)
{
delete [] detData;
qCritical("SetupDiEnumDeviceInfo failed. Error code: %ld", GetLastError());
return;
}
}
}
delete [] detData;
delete[] pGuids;
}
BOOL CEnumerateSerial::EnumeratePorts()
{
int SPDRPlist[] = {
SPDRP_HARDWAREID, SPDRP_DEVICEDESC, SPDRP_FRIENDLYNAME, SPDRP_MFG,
SPDRP_LOCATION_INFORMATION, SPDRP_PHYSICAL_DEVICE_OBJECT_NAME,
-1};
// Clear anything from previous enumerate...
ResetPortList();
// First need to convert the name "Ports" to a GUID using SetupDiClassGuidsFromName...
DWORD dwGuids = 0;
SetupDiClassGuidsFromName(_T("Ports"), NULL, 0, &dwGuids);
if (dwGuids == 0) return FALSE;
// Allocate the needed memory...
CHeapPtr<GUID> GuidArray;
GUID *pGuids = (GUID*)GuidArray.Allocate(sizeof(GUID) * dwGuids);
if (pGuids==NULL) {
SetLastError(ERROR_OUTOFMEMORY);
return FALSE;
}
// Call the function again...
if (!SetupDiClassGuidsFromName(_T("Ports"), pGuids, dwGuids, &dwGuids))
return FALSE;
// Now create a "device information set" which is required to enumerate all the ports...
HDEVINFO hDevInfoSet = SetupDiGetClassDevs(pGuids, NULL, NULL, DIGCF_PRESENT);
if (hDevInfoSet == INVALID_HANDLE_VALUE)
return FALSE;
// Finally do the enumeration...
int nIndex = 0;
SP_DEVINFO_DATA devInfo;
CHeapPtr<TCHAR> tempstr(1000);
CSerialPortInfo *portinfo = NULL;
// Enumerate the current device...
devInfo.cbSize = sizeof(SP_DEVINFO_DATA);
while (SetupDiEnumDeviceInfo(hDevInfoSet, nIndex, &devInfo))
{
portinfo = NULL;
// Get the registry key which stores the ports settings...
HKEY hDeviceKey = SetupDiOpenDevRegKey(hDevInfoSet, &devInfo, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_QUERY_VALUE);
if (hDeviceKey) {
tempstr.FillZero();
DWORD dwSize = tempstr.SizeOf();
DWORD dwType = 0;
// Read name of port. If formatted as "COMxx" then allocate a port slot...
if ((RegQueryValueEx(hDeviceKey, _T("PortName"), NULL, &dwType, reinterpret_cast<LPBYTE>((TCHAR*)tempstr), &dwSize) == ERROR_SUCCESS) && (dwType == REG_SZ))
if (_tcslen(tempstr) > 3)
if ((_tcsnicmp(tempstr, _T("COM"), 3) == 0) && IsNumber(&(tempstr[3])))
portinfo = AddPort(_ttoi(&(tempstr[3])));
// Close the key now that we are finished with it...
RegCloseKey(hDeviceKey);
}
// If a serial port, then try getting additional useful descriptive info...
if (portinfo) {
for (int i=0; SPDRPlist[i]>=0; i++) {
tempstr.FillZero();
DWORD dwSize = tempstr.SizeOf();
DWORD dwType = 0;
if (SetupDiGetDeviceRegistryProperty(hDevInfoSet, &devInfo, SPDRPlist[i], &dwType, reinterpret_cast<PBYTE>((TCHAR*)tempstr), dwSize, &dwSize) && ((dwType == REG_SZ) || (dwType == REG_MULTI_SZ)))
switch (SPDRPlist[i]) {
case SPDRP_MFG : portinfo->SetManufacturer(tempstr); break;
case SPDRP_HARDWAREID : portinfo->SetHardwareID(tempstr); break;
case SPDRP_DEVICEDESC : portinfo->SetDeviceDesc(tempstr); break;
case SPDRP_FRIENDLYNAME : portinfo->SetFriendlyName(tempstr); break;
case SPDRP_LOCATION_INFORMATION : portinfo->SetLocationInfo(tempstr); break;
case SPDRP_PHYSICAL_DEVICE_OBJECT_NAME : portinfo->SetPhysLocation(tempstr); break;
}
}
// Get COM port properties...
HANDLE hPort = ::CreateFile(portinfo->GetPortDeviceName(), GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);
if (hPort != INVALID_HANDLE_VALUE) {
COMMPROP cp;
GetCommProperties(hPort, &cp);
portinfo->SetCommProp(cp);
TRACE ("Port %d: CommProp: maxbaud=%08x settablebaud=%08x\n",portinfo->GetPortNum(),cp.dwMaxBaud,cp.dwSettableBaud);
CloseHandle(hPort);
}
}
++nIndex;
}
// Free up the "device information set" now that we are finished with it
SetupDiDestroyDeviceInfoList(hDevInfoSet);
// Return the success indicator
return TRUE;
}
