CreateFile Failed problem

[wklove2003]

bool Serial::connect()
{
  if (mConnected)
  {
    printf("You are already connected, please disconnect first\n");
    return false;
  }
  
  COMMTIMEOUTS cto;
  DCB dcb;
  char parity, stop_bits;
  int speed;
	 	 
  if (mFd != INVALID_HANDLE_VALUE && !CloseHandle(mFd)){
    printf("Can't close comm port");
    return false;
  }
 
  mFd = CreateFileA(mDevice,
		    GENERIC_READ|GENERIC_WRITE,
		    0,
		    NULL,
		    OPEN_EXISTING,
		    0,
		    NULL);
	 
  if(mFd == INVALID_HANDLE_VALUE)
  {
    printf("CreateFile on %s failed with error code: %d \n"
      , mDevice
      , GetLastError( ) );
	  char port[64];
    strcpy(port, "\\\\.\\");
    strcat(port, mDevice);
    mFd = CreateFileA(port,
		      GENERIC_READ|GENERIC_WRITE,
		      0,
		      NULL,
		      OPEN_EXISTING,
		      0,
		      NULL);
		 
    if(mFd == INVALID_HANDLE_VALUE){
	    printf("CreateFile on %s failed with error code: %d \n"
        , port
        , GetLastError( ) );
	printf("CreateFile Failed \n");
      return false;
    } 
  }

"CreateFile Failed
CreateFile on C:\Documents an=failed with error code: 2
CreateFile on \\.\C:\Documents an=failed with error code: 2"

Why did it not show the full path?