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  1.  
  2. #import <appkit/appkit.h>
  3.  
  4. @interface TreeView:View
  5. {
  6.     id treeRoot;
  7.     id lineList;
  8. }
  9.  
  10. - buildTreeFromNode:aNode bottom:(double)ybot
  11.         top:(double)ytop atX:(double)xpos parent:(NXPoint *)pos;
  12. - attachTree:aTree;
  13. - drawSelf:(NXRect *)rects :(int)rectCount;      // standard rendering method
  14.  
  15. @end
  16.