windows取得串口列表

#include <atlbase.h>

int SerialPort::GetList(char list[][SERIAL_NAME_MAXLEN]){CRegKey RegKey;   int nCount = 0;   if(RegKey.Open(HKEY_LOCAL_MACHINE, "HARDWARE\\DEVICEMAP\\SERIALCOMM") == ERROR_SUCCESS)   {   while(true)   {   char ValueName[_MAX_PATH];   unsigned char ValueData[_MAX_PATH];   DWORD nValueSize = _MAX_PATH;   DWORD nDataSize = _MAX_PATH;   DWORD nType;   if(::RegEnumValue(HKEY(RegKey), nCount, ValueName, &nValueSize, NULL, &nType, ValueData, &nDataSize) == ERROR_NO_MORE_ITEMS)   {   break;   }   strcpy(list[nCount], (char*)ValueData);nCount++;   }   }   return nCount;   }