Can't select with fence

[steven-g]

I have been struggling for hours to get a selection working in lisp only to find that the problem is in the actual dwg file, but I can't see why!

Attached are two dwg's "False" is a collection of lines and "True" is the same collection of lines copied into a new drawing using 0,0 as a base point

but this simple line of code will only work in the "True" drawing can anyone see why that should be? It's driving me mad.

(command "select" "f" "708.925,-599.75" "708.925,-599.95" "")

Even running the select command from the command line with the option "fence" and "end" is failing

False.dwg

True.dwg

[marko_ribar]

Just stab in the dark... Check PICKFIRST sys var... IMHO it should be 1... And also check for QAFLAGS undocumented sys var - env var... Experiment with QAFLAGS... After experimenting return it back to 0 - this is necessity if you want CAD to operate normally...

Edited December 17, 2018 by marko_ribar

[Grrr]

Quote

Caution: Only objects visible in the drawing area at the time of selection will be selected by this method. Consider temporarily zooming to the selection window before performing the selection, and then zoom previous to restore the original screen position.

 

Quote from ssget funciton reference (LM)

 

[steven-g]

Pickfirst=1

QAFLAGS=2

same in both drawings

both drawings "zoom" "extents"

but one fails?

[ronjonp]

Strange enough. but when the current vport is set to anything but '2D wireframe' view it fails? Same behavior with SSGET too:

(sssetfirst nil (ssget "_F" '((708.925 -599.75)(708.925 -599.95))))

 

[steven-g]

Thank you ronjonp it's easy when you know how, it does seem odd behavior that you can't select in this way dependant on display mode, but that certainly solves the problem.

[ronjonp]

41 minutes ago, steven-g said:

Thank you ronjonp it's easy when you know how, it does seem odd behavior that you can't select in this way dependant on display mode, but that certainly solves the problem.

It's very odd behavior .. I'd even call it a bug!