🚀 go-pugleaf

John,

Are you using a serial comm component of some type? Does it have a method
for opening a COM port? I'm using an old C++ Builder shareware component
called ZComm (still available), and I use a brute-force method to make a
list of available COM ports, as outlined below. Note that the resulting list
will not contain COM ports that exist but are already in use.

Joe

for (int i=1; i<=256; i++)
{
    if (open_com(i) == true)
    {
        add i to list
        close_com(i)
    }
}

"John" <jnguyen@teledrift.com> wrote in message
news:4766f9fb$1@newsgroups.borland.com...
> How can I scan for all available serial com ports?
>
> Thanks,
> John
>
>

Sorry for the delay dude, i saw your post because i was searching for
the same thing. Thats one of the ways i learned:

TStringList* availableComPorts = new TStringList();
      TRegistry *Registry = new TRegistry(KEY_READ);
      AnsiString portNb ="";

      Registry->RootKey = HKEY_LOCAL_MACHINE;
      // The com ports are administered in the following directory.
      // false, because no entry is supposed to be created.
      Registry->OpenKey("HARDWARE\\DEVICEMAP\\SERIALCOMM", false);

      // Extract the COM port names and store them.
      Registry->GetValueNames(availableComPorts);
      // List the available COM ports in the corresponding combo box.
      for (int i(0); i < availableComPorts->Count; i++)
      {
          portNb = Registry->ReadString(availableComPorts-
>Strings[i]);
          ComboBox1->AddItem(portNb, NULL);
      }
      delete Registry;
      delete availableComPorts;