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CAD tip CAD tip # 3968:

Question CAD 
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Q - question

Less known options of the (ssget) LISP function

A - answer The AutoLISP "Select objects" function 'ssget' offers several useful modifiers which are undocumented and unknown for many users. Besides usual formats like (ssget) or (ssget "_X") etc. you can use in your programs or macros e.g.:
  • (ssget "_:S") - selecting a single selection (for single object use "_:S+.")
  • (ssget "_:E") - selecting all objects crossing the selection box (can be also combined to e.g. (ssget "_:E:S")
  • (ssget "_:N") - selecting objects including nested/child objects - e.g. with block references, polymeshes, etc.
  • (ssget "_:D") - duplicate objects counted separately (2x selected object = 2 selections)
  • (ssget "_:L") - stops users from selecting objects on locked layers
  • (ssget "_:P") - rejects selection of viewports
  • (ssget "_:R") - allow selection in long transactions
  • (ssget "_:U") - enable subentity selection with Ctrl
  • (ssget "_:V") - force subentity selection
  • (ssget "+?) - add selected mode - L=Last, A=All, P=Previous - e.g. (ssget "_:S+L+P")
  • (ssget "-?) - remove selected mode - L=Last, A=All, G=Group, P=Previous - e.g. (ssget "-M-A")
  • (ssget "_+.") - allows window selection even in the single selection mode - e.g. (ssget "_+.:E:S") (may not work in some localized versions of AutoCAD)
ACADADTMapACADM
100% *  CAD 
6.8.2004    26015x  
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See also:
Tip 11179:Select objects in negative elevation or in a given 3D octant.
Tip 10269:How to restore erased hatch boundaries? (multiple)
Tip 10015:How to select and modify objects in all layouts of the DWG?
Tip 9350:How to move the draw order of all images or hatches to back?
Tip 9063:Flip 3D faces (front/back) in AutoCAD.


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