topic Re: EXPLODE Error Message in ObjectARX Forum

EXPLODE Error Message

Kyudos — Tue, 28 Mar 2017 01:12:08 GMT

I have a custom object that is, essentially, a linked collection of some of my other custom objects. In the explode function for the 'parent' object I remove the links between the objects allowing them to behave independently.

However since this does not involve creating or deleting any objects I'm returning eNotApplicable - this prevents explode from deleting the original object.

Unfortunately it also causes AutoCAD to report "Cannot explode YourCustomEntity". Since the desired action has actually been completed, this could be a bit confusing.

Is there any way to return from the explode function that prevents the 'normal' function of explode, but also prevents the "Cannot explode..." message?

Re: EXPLODE Error Message

BerndCuder8196 — Tue, 28 Mar 2017 05:47:43 GMT

First, I think an custom object (derived from AcDbObject) have no explode method.
If you have derived from AcDbEntity and your explode does nothing, you must not override it, because explode from AcDbEntity does nothing. Or simply return AcDb::eOk.

Re: EXPLODE Error Message

BerndCuder8196 — Tue, 28 Mar 2017 06:01:57 GMT

Ok, my mistake, return eOk will erase your custom entity. But if you return eNotApplicable, the AutoCAD message is correct. I think the best way is to clone your entity in explode, returns the clone in entity list and also returns eOk.