(command "undo" "begin") crashes A2005 sometimes...

I have written many complicated lisp routines for A2002 and they run fine.
The same routines sometimes crash in A2005.

I have narrowed it to the undo begin and end statements.
Is there anything I should be doing to deal with the incredible sensitivity to this in A2005?

I can give more info depending on what people say. I am first looking for any obvious things I need to be careful
about.
thanks
James Maeding
jmaeding at hunsaker dot com
Civil Engineer/Programmer

 

James,

Don't know... but remember the salad mix of autolisp with activex, stuff?... might be something to have a look.

The other is to try to use pure activex to replace the command calls for undo.... or at minimum replace it with vl-cmdf...

LE

 

James,

Have you seen this fatal error? INTERNAL ERROR: UNDOCMD 3. If so I might have an
idea.

Another question: does the crash occur while the program is running? Or only if you
try to undo immediately after the program ends.

Joe Burke

 

None, aside from the fact that what the vla-* functions
above are doing, is executing the UNDO Begin/End sub-
commands via the internal equivalent of the (command)
function, to acheive their goal.

 

Hi Joe,
I have not seen that error, I just get FATAL ERROR blah blah....
The crashes occur while the routines are running, from what I can tell.

I will definately try the vl versions of undo begin and end, that would be too easy though, I'll cross my fingers.

"Joe Burke" <>
|>James,
|>
|>Have you seen this fatal error? INTERNAL ERROR: UNDOCMD 3. If so I might have an
|>idea.
|>
|>Another question: does the crash occur while the program is running? Or only if you
|>try to undo immediately after the program ends.
|>
|>Joe Burke
|>
|>>I have written many complicated lisp routines for A2002 and they run fine.
|>> The same routines sometimes crash in A2005.
|>>
|>> I have narrowed it to the undo begin and end statements.
|>> Is there anything I should be doing to deal with the incredible sensitivity to this
|>> in A2005?
|>>
|>> I can give more info depending on what people say. I am first looking for any
|>> obvious things I need to be careful
|>> about.
|>> thanks
|>> James Maeding
|>> jmaeding at hunsaker dot com
|>> Civil Engineer/Programmer
|>

James Maeding
jmaeding at hunsaker dot com
Civil Engineer/Programmer

 

I seem to have solved the crashes, I noticed I had one (command "undo" "begin") without an end command.
A2002 did not hang on this but A2005 does.
I am seeing errors in my other routines now too where they end before issuing the undo end statement.

I guess this is one way to phase out lisp, start making things sensitive to what used to be ok. Whether its on purpose
or not, I guess its one way to do it.
thx

James Maeding <jmaeding at hunsaker dot com>
|>I have written many complicated lisp routines for A2002 and they run fine.
|>The same routines sometimes crash in A2005.
|>
|>I have narrowed it to the undo begin and end statements.
|>Is there anything I should be doing to deal with the incredible sensitivity to this in A2005?
|>
|>I can give more info depending on what people say. I am first looking for any obvious things I need to be careful
|>about.
|>thanks
|>James Maeding
|>jmaeding at hunsaker dot com
|>Civil Engineer/Programmer

James Maeding
jmaeding at hunsaker dot com
Civil Engineer/Programmer

 

Simply postulating; perhaps the sensitivity is related to the added
multiple-redo functionality?

--
James Allen, EIT
Malicoat-Winslow Engineers, P.C.
Columbia, MO

"begin") without an end command.

issuing the undo end statement.

to what used to be ok. Whether its on purpose

for any obvious things I need to be careful

 

James Maeding,

That's exactly what I intended to suggest. The following will crash, so don't try it
with open working files.

Using 2004 here.

(defun c:crash ( / doc )
(setq doc (vla-get-ActiveDocument (vlax-get-acad-object)))
(while T
(vla-StartUndoMark doc)
(command "line" pause pause "")
(vla-EndUndoMark doc)
)
)

Draw four lines. Cancel to end. Undo a few times. CRASH with the error I mentioned,
or something similar.

Obviously an error handler which contains (vla-EndUndoMark doc) will avoid the
problem.

Joe Burke

 

James,

I think you're right. What I posted above does not crash 2002 after multiple undos.

Joe Burke

 

The error I get is Fatal error: UNDOCMD 2.

There's obviously major problems there.