Gives directions for transporting information to the active child window 提供有关如何将信息传输到活动子窗口的说明。
2.
This will enable the window menu to maintain a list of open mdi child windows with a check mark next to the active child window 这将使“窗口”菜单能够维护打开的mdi子窗口的列表(活动子窗口旁有一个复选标记) 。