Selection set get

Currently trying to work with reactors and not having much success.

• Im trying to log every new entity created and errased.

As far as i can work out, a reactor fires at the start and the end, Thus if you use the line command, It will be logged the start, But if you draw 6 lines then cancell the end/cancell reactors will fire, Thus this causes entlast to not grab every enitity created.Have i missed a reactor type that will fire every time a object is created/removed ?

• Get a selection set.

When a start reactor begins, alot of the time you have yet to make a selection set, hence you carnt get the active selection selection set, so do how you go about getting the previouse selection set?

Thanks guys

Flower

Maybe this will give you some ideas, it’s thrown together and needs more work but it might get you in the right direction.

The problem about retrieving entity information when something is undone , canceled or erased is that the reactor will return the entity name but the entity information will be nil.

 
(vl-load-com)
(defun OAcb (a b / nent)  
(setq nent (vl-princ-to-string(cadr b)))
(princ (strcat nent " Added to Drawing"))
 );_defun
(defun OEcb (a b / delent)
(setq delent (vl-princ-to-string(cadr b)))
(princ (strcat delent " Deleted From Drawing"))
 );_defun
(if (not (= (type OArct) 'VLR-AcDb-Reactor))
(progn
(setq OArct(vlr-acdb-reactor nil '((:vlr-objectAppended . OAcb))))
(setq OErct(vlr-acdb-reactor nil '((:vlr-objectErased . OEcb))))
);_progn
 );_if

Thank you my friend this should set me well on my way for atleast the first issue thanks!!

Flower

what are you trying to do?

Im currently trying to modify the refedit structure. Well more so trying to replicate Acad's Mec Refedit Block structure. Where you can edit a block then once completed,Change the name and base point, Thus for this to happen i have workout tow methods (if you can see a simpler method please let me kno)

Monitor every created and distroyed item and namespace change. Thus at the end, Replicated these into a new block

Or

Create a back of up of the original ,then once complete take the new block table and create a new one identical then replace the table with the backed up information

Im currently just in the exploring stage.

Still having trubble identifying the exact block entity being editied