System variables

[Anonymous]

I have an issue with the system variables in Autocad/Civil 3d version 2013.  On several occasions now since upgrading to 2013, I find that system variables that I never had reason to change, are changing on their own.  What is the reason for this?

[jmayo-EE]

Many times a command may override system variables. If C3D crashes or if the command does not complete these system variables may not be set back and will appear to change on their own.

What variables are being reset on you?

Have you looked into placing these commands into an acad.lsp or acaddoc.lsp file so they always do get reset as you need?

There is a lot if info on this NG about the files I intentioned with examples that can be copied and pasted for your use. Help will get you running as well.

[tcorey]

Good advice from John about putting your sysvars in acad.lsp so that you get exactly your settings every time.

And he asked an important question: What variables are changing? Many AutoCAD variables are saved per drawing so changing while in one drawing won't change them in another.

In case you're unfamiliar with LISP, here are a few examples of how to set system variables:

(setvar "OSMODE" 35)

(setvar "PICKFIRST" 1)

(setvar "GRIDMAJOR" 5)

I use all caps for sysvar names, but you don't have to any more. If my memory is correct (not likely!) you were required to use all caps in old (like R10) versions, so I just got in the habit. The quotations are required.

Tim

[Anonymous]

The one variable that was changed for sure this time was the "pickfirst" system variable. Unsure what others have changed.
This pickfirst variable seemed to affect the way the "undo" and "delete" commands work, as well as double clicking text to edit them.


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