The return value is a pseudo handle to the current process.A pseudo handle is a special constant that is interpreted as the current process handle. The calling process can use this handle to specify its own process whenever a process handle is required. Pseudo handles are not inherited by child processes. BOOL OpenProcessToken( __in HANDLE ProcessHandle, //要修改访问权限的进程句柄 __in DWORD DesiredAccess, //指定你要进行的操作类型 __out PHANDLE TokenHandle //返回的访问令牌指针 )；