Find object type went ObjectErased event catch delete object

I would like to find witch object user delete in drawing. I use event
ObjectErased but it give only ObjectID and went i use ObjectIdToObject it do
nothing, I think is beacause the object is erased. In help of autocad tell
me " Use the "Object" variable to determine the type of object removed " but
I don't know wath is this. Can HELP me???

 

It's pretty obvious that the person who wrote that
in the documentation didn't either.

You can't access erased objects, which means that
there is no way to do it, without using ObjectARX.

My AcadX library has an Undelete() method, but if
the object was erased, and you unerase it, and
then erase it again, it will fire the notification
again, and you will loop endlessly.

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I don't want undelete object, I just want if the object is block. If block
name is specific name, I modify something in drawing. I just want to retrive
info of object is delete

 

Maybe you should try creating BeginCommand event and do some pickfirst
selection set objects checking if the command being started is "ERASE" (user
picked objects for deletion). Other way round, if user issues ERASE picking
objects subsequently, there's no viable solution to it than what Tony
suggested (or maybe there is, but rather complicated one).

Regards,
Maksim Sestic

 

Ugly, but perhaps you could iterate all blocks in the drawing before-hand (maybe on load or maybe when in the Begin event) and store the information somewhere, then after the Delete you iterate again and see what's missing!

(I said it wasn't pretty.)

Regards

Wayne Ivory
IT Analyst Programmer
Wespine Industries Pty Ltd

 

Wayne,

The other (ugly) method assumes that you store a copy of pickfirst selection
set objects' properties to some secure place (say, Dictionary), so in case
user deletes them you still have an info on what user just erased. Having in
mind that pickfirst selection set may consist of many many objects, the
operation of cloning their properties to Dictionary may take considerable
amount of time... every time he/she picks something on screen... On the
other hand, you can narrow this operation to preset number of selected
objects (e.g. 10) to avoid ugly delays and possible fatal errors...

Regards,
Maksim Sestic

(maybe on load or maybe when in the Begin event) and store the information
somewhere, then after the Delete you iterate again and see what's missing!

 

Excuse me, but kludges like this are just not
realistic solutions. I've noticed that VBA
programmers in particular seem to be in the habit
of gravitating towards, and incorrectly viewing
hideous kludges like this as feasible. Perhaps
it is because they're too anxious to solve the
problem and in that anxiety, they fail to look
beyond the surface, which is what prevents them
from seeing why the kludge will not work.

So, lets look beyond the surface:

First, the erase command may not use the pickfirst
selection set.

Second, there are ways to erase an object without
using the erase command.

Third - Undo/Redo has to be considered. If a
block is inserted and then the user issues the
UNDO command, the block is effectively erased,
but there is no object erased notification.





AutoCAD based Security Planning Solutions:
http://www.caddzone.com/securityplanning

 

In conclusion, it have no good solution for my probleme. Only AutoDesk can
remedy this problem with add new event before delete object. Thanks all !!!
Can you ask one thing ? Ask to autodesk for this new event as this link
http://usa.autodesk.com/adsk/servlet/item?siteID=123112&id=1073228