🚀 go-pugleaf

Nope, you may need to do some further digging
to enumerate modems in the registry, then probably
subtract this from all available ports.

I have some quick and dirty code to enumerate
existing COM ports, weather open or not.
However, it is not perfect, and you will need to
clean it up yourself. :)

Good luck....

//-----------------------------------------------------------------------------

bool COM1,COM2,COM3,COM4,COM5,COM6,COM7,COM8;

bool COMExists(char *ComStr)
{
    HKEY hKey;
    DWORD keyType   = 0;
    DWORD retValue  = 0;
    DWORD keyLength = 0;
    char *t = new char [MAX_PATH];
    char *CV = new char [256];
    strcpy(CV, "Hardware\\DeviceMap\\SerialComm"); // safe
    retValue = RegOpenKeyEx(HKEY_LOCAL_MACHINE, CV, NULL, KEY_READ, &hKey);
    if (retValue != ERROR_SUCCESS)
    {
      delete []CV;
      delete []t;
      return false;
    }
    RegQueryValueEx(hKey, ComStr, NULL, &keyType, NULL, &keyLength);
    retValue = RegQueryValueEx(hKey, ComStr, NULL, &keyType, (UCHAR *)t, 
&keyLength);
    RegCloseKey(hKey);

    if (retValue != ERROR_SUCCESS)
    {
       delete []CV;
       delete []t;
       return false;
    }
    if (strcmp(t, "COM1")==0) COM1 = true;
    if (strcmp(t, "COM2")==0) COM2 = true;
    if (strcmp(t, "COM3")==0) COM3 = true;
    if (strcmp(t, "COM4")==0) COM4 = true;
    if (strcmp(t, "COM5")==0) COM5 = true;
    if (strcmp(t, "COM6")==0) COM6 = true;
    if (strcmp(t, "COM7")==0) COM7 = true;
    if (strcmp(t, "COM8")==0) COM8 = true;
    delete []CV;
    delete []t;
    return true;
}

//-----------------------------------------------------------------------------

AnsiString EnumSerialPorts()
{
    AnsiString COMcsv = "";
   OSVERSIONINFO osv;
   osv.dwOSVersionInfoSize = sizeof(osv);
   GetVersionEx(&osv);
   if (osv.dwPlatformId == VER_PLATFORM_WIN32_NT)
    {
      COMExists("\\Device\\Serial0");
      COMExists("\\Device\\Serial1");
      COMExists("\\Device\\Serial2");
      COMExists("\\Device\\Serial3");
      COMExists("\\Device\\Serial4");
      COMExists("\\Device\\Serial5");
      COMExists("\\Device\\Serial6");
      COMExists("\\Device\\Serial7");
    }
    else
    {
      COMExists("COM1");
      COMExists("COM2");
      COMExists("COM3");
      COMExists("COM4");
      COMExists("COM5");
      COMExists("COM6");
      COMExists("COM7");
      COMExists("COM8");
    }
    if (COM1 == true) COMcsv = "COM1";
    if (COM2 == true) COMcsv += "\,COM2";
    if (COM3 == true) COMcsv += "\,COM3";
    if (COM4 == true) COMcsv += "\,COM4";
    if (COM5 == true) COMcsv += "\,COM5";
    if (COM6 == true) COMcsv += "\,COM6";
    if (COM7 == true) COMcsv += "\,COM7";
    if (COM8 == true) COMcsv += "\,COM8";

    return  COMcsv;
}

//-----------------------------------------------------------------------------





northern_RATT wrote:
> Hi Folks;
> 
> I need to populate a menu w/ 
> available COM ports. I know how to 
> do this with CreatFile(dwAccess=0).
> Fine & Dandy, But if this port is 
> attached to a modem, IR port, 
> Bluetooth device then I want to 
> skip it. I'm only interested in 
> RS232, 9 pin D connector, COM 
> ports. So my question is: If I get 
> a valid handle back form CreateFile 
> is there a good way to determine 
> what is on the other end?
> 
> Thanks
> Drew 
> 
>