一些Director跨系统编游戏的同志可能已经发现，Mac系统中，屏幕上方有一条很讨厌的条子，

应为是属于系统的所以不能用window.moveToFront()覆盖掉，现在这个Xtra包含两个指令，hideControlStrip()和ShowControlStrip()，前者可以做到把那讨厌的东西隐藏掉，后者功能预制相反，用法：

--lingo syntax

XOF=new Xtra("XOF")

XOF.hideControlStrip()

XOF.showControlStrip()

//java syntax

var XOF=new

XOF.hideControlStrip()

XOF.showControlStrip()-a number of comrades of compiled cross-system games by Director may have found ,in Mac systems, the top of the screen has a white strip, it belongs to the system so it can not use window.moveToFront() to override it, and now this Xtra contains two instructions, hideControlStrip() and ShowControlStrip(), the former can be done to hide this white strip away, which features pre-contrast, usage:

--lingo syntax

XOF=new Xtra("XOF")

XOF.hideControlStrip()

XOF.showControlStrip()

//java syntax

var XOF=new

XOF.hideControlStrip()

XOF.showControlStrip()