topic openedForModify in ObjectARX Forum

openedForModify

Anonymous — Wed, 06 Apr 2005 16:02:58 GMT

In my application I have occasion to insert some custom blocks w/attributes. I want to prevent users from modifying these through any means other than the interface I provide. At first it seemed obvious that I needed to attach an object reactor to them and trap any mofifications. However I ran into the same situation as was posted here some time ago, namely that I couldnt modify the blocks during the reactor call because there is always an "eOpenforNotify". After reading some more posts I realized that the object reactor needs only to save the objectid of the block, then I would use an editor reactor to see if this objectid has been modified and make my changes there. However, it seems there must be a better way, since I want to prevent ANY modification, I thought I would use the "Reactor::openedForModify" event and simply do a return and skip the base class function. This didnt work 😞 and Acad definately didnt like it when I tried to close the object during this call! So, my question is, how do I prevent any and all modifications to an entity? Thanks, Perry

Re: openedForModify

Anonymous — Wed, 06 Apr 2005 16:28:56 GMT

"perry" wrote > So, my question is, how do I prevent any and all modifications to an entity? Put them on a locked layer. There is no other rational way to do it. -- http://www.caddzone.com AcadXTabs: MDI Document Tabs for AutoCAD 2004/2005/2006 http://www.acadxtabs.com

Re: openedForModify

Anonymous — Wed, 06 Apr 2005 17:53:19 GMT

Tony Tanzillo wrote: > "perry" wrote > > >>So, my question is, how do I prevent any and all modifications to an entity? > > > Put them on a locked layer. There is no other rational way > to do it. A locked layer can be easily unlocked. Guess I will try calling "Undo" from the editor reactor... Perry

Re: openedForModify

Anonymous — Wed, 06 Apr 2005 19:03:24 GMT

> Guess I will try calling "Undo" from the editor reactor... I already told you that there is no way to do it, which takes into account the kludge you mention above. -- http://www.caddzone.com AcadXTabs: MDI Document Tabs for AutoCAD 2004/2005/2006 http://www.acadxtabs.com "perry" wrote in message news:425421e6$1_3@newsprd01... > Tony Tanzillo wrote: >> "perry" wrote >> >> >>>So, my question is, how do I prevent any and all modifications to an entity? >> >> >> Put them on a locked layer. There is no other rational way >> to do it. > > A locked layer can be easily unlocked.

Re: openedForModify

Anonymous — Thu, 07 Apr 2005 02:43:28 GMT

Tony Tanzillo wrote: >>Guess I will try calling "Undo" from the editor reactor... > > > I already told you that there is no way to do it, > which takes into account the kludge you mention > above. > > Kludge is my middle name! I was able to do something similiar in VB, using events, moving objects back into place if they had been moved by a user... Oh well. Thanks again Tony

Re: openedForModify

Anonymous — Thu, 07 Apr 2005 15:26:04 GMT

You can't do that in VB either. If the user runs a script or some LISP, and it attempts to do something after it modifies the entity, the script/lisp breaks. In 2004 or later, this will not only not work consistently, it will completely disable the ability to undo/redo. -- http://www.caddzone.com AcadXTabs: MDI Document Tabs for AutoCAD 2004/2005/2006 http://www.acadxtabs.com "perry" wrote in message news:42549e50$1_2@newsprd01... > Tony Tanzillo wrote: >>>Guess I will try calling "Undo" from the editor reactor... >> >> >> I already told you that there is no way to do it, >> which takes into account the kludge you mention >> above. >> >> > Kludge is my middle name! > I was able to do something similiar in VB, using events, moving objects back into place if they had been moved by a > user... > Oh well. > Thanks again Tony