topic Prevent element from copy user data in Archicad C++ API

Prevent element from copy user data

Anonymous — Tue, 06 Dec 2022 13:05:44 GMT

I use function function ACAPI_Element_SetUserData to attach additional information. The problem is that this data is copied with element when i "Drag a Copy" and then I have to deal with unwanted behaviorur caused by that. Is there a way to prevent Archicad from copying this additional bytes?

Re: Prevent element from copy user data

Ralph Wessel — Wed, 14 Jun 2017 19:36:20 GMT

kostek142 wrote:
I use function function ACAPI_Element_SetUserData to attach additional information. The problem is that this data is copied with element when i "Drag a Copy" and then I have to deal with unwanted behaviorur caused by that. Is there a way to prevent archicad from copying this additional bytes?

Take a look at the flags member of the API_ElementUserData struct you pass to ACAPI_Element_SetUserData – this controls what happens to user data in events like this.

Re: Prevent element from copy user data

Anonymous — Thu, 15 Jun 2017 11:05:46 GMT

Can you tell me what specific flag can prevent my data from being copied? I think I have tried all of them with no positive result.

Re: Prevent element from copy user data

Ralph Wessel — Thu, 15 Jun 2017 11:24:29 GMT

kostek142 wrote:
Can you tell me what specific flag can prevent my data from being copied? I think I have tried all of them with no positive result.

I'd forgotten about that – the relevant flag APIUserDataFlag_Copy disappeared from AC18 onward. You may need to request notification of the creation of new elements so you clear/update the data attached to the element as required. Perhaps someone else might have another solution.

Re: Prevent element from copy user data

Akos Somorjai — Thu, 15 Jun 2017 13:15:50 GMT

Ralph wrote:
kostek142 wrote:
Can you tell me what specific flag can prevent my data from being copied? I think I have tried all of them with no positive result.
I'd forgotten about that – the relevant flag APIUserDataFlag_Copy disappeared from AC18 onward. You may need to request notification of the creation of new elements so you clear/update the data attached to the element as required. Perhaps someone else might have another solution.

If I remember well you have to leave the userData.flags empty, which means that the user data will not be copied to the new element. If you want to update the user data, then do as Ralph suggested.

Regards, Akos

Re: Prevent element from copy user data

Anonymous — Fri, 16 Jun 2017 17:37:31 GMT

Thanks for reply Akos.

Unfourtunately leaving flag empty also wasn't the solution. I found workaround, just wanted to notice the fact, maybe you can fix it in the next build of API or something

Regards

Re: Prevent element from copy user data

Akos Somorjai — Fri, 30 Jun 2017 10:56:43 GMT

kostek142 wrote:
Thanks for reply Akos.

Unfourtunately leaving flag empty also wasn't the solution. I found workaround, just wanted to notice the fact, maybe you can fix it in the next build of API or something

Regards

Thanks!

Akos