通过PortTalk和改良的函数集、在Windows 2000 和 Windows XP 下进行IO口的直接访问。主调函数为OpenCurrentProcessIOAllAccess(PID: THandle)或者OpenCurProcessIOAllAccess(CurWnd: THandle)，PID为进程ID，CurWnd为窗口句柄。-through PortTalk and improved function set. In Windows 2000 and Windows XP under the direct IO I visit. Melody function OpenCurrentProcessIOAllAccess (PID : THandle) or OpenCurProcessIOAllAccess (CurW nd : THandle), the PID of the process ID, CurWnd handle for the window.