c++builder 中怎样列出可用的串口号啊（spcomm控件）,该如何处理

c++builder 中怎样列出可用的串口号啊（spcomm控件）
能找出当前计算机可用的串口号，并显示再memo中··

[解决办法]
从注册表枚举就可以了：

C/C++ code

#include <registry.hpp>void __fastcall CrnGetCommPortList(TStrings *lstComm){    lstComm->Clear();    TRegistry *reg = new TRegistry;    TStringList *lst = new TStringList;    try    {        reg->RootKey = HKEY_LOCAL_MACHINE;        reg->OpenKey("HARDWARE\\DEVICEMAP\\SERIALCOMM", true);        reg->GetValueNames(lst);        for (int i = 0; i < lst->Count; i++)            lstComm->Add(reg->ReadString(lst->Strings[i]));    }    __finally    {        delete reg;        delete lst;    }}void __fastcall TForm1::Button1Click(TObject *Sender){    CrnGetCommPortList(Memo1->Lines);}