用双向链表实现绘图软件中的几个常用功能

The use of double linked list to operate familiar functions in drawing software

采用了双向链表数据结构 ,在绘图软件中实现了重画(Redraw)功能 ,在此基础上实现了 U ndo与 Redo功能、图形的缩放与平移以及图形的保存与调用 ,给出了

Double linked list data structure was adopted to operate 'redraw' function in drawing software.Based on it,we realized'undo'、'redo'、'zoom'、'pan'、'save' and 'open' function of drawing.In this paper,we also presented program code in C language.