topic Re: Determine an object/block were copied/moved in .NET Forum

Determine an object/block were copied/moved

KinAkira — Fri, 17 Sep 2021 04:18:46 GMT

Hi,

Are there any ways to check a block object is copied/moved to a new position from the initial position?

Thanks for your help!

Re: Determine an object/block were copied/moved

_gile — Fri, 17 Sep 2021 08:35:55 GMT

Hi,

For the objects you want to monitor, you can register the Copied and Modified events.

Have a look at this topic for Object Events.

Re: Determine an object/block were copied/moved

dgorsman — Fri, 17 Sep 2021 14:47:35 GMT

You could attach XDATA to it. There's several DXF data types which support different coordinate manipulations, one of which is static i.e. the values are not changed when the entity is moved, rotated, or scaled. Although there isn't a type for xrecords which behaves the same way, it's not that hard to simply add an extension dictionary and xrecord containing the original coordinates and other properties.

That only handles the basic transforms though, not creating copies. The only way I can think to handle that is with the event handlers mentioned.

If I may ask, what's the end game/purpose for this?

Re: Determine an object/block were copied/moved

KinAkira — Sat, 18 Sep 2021 15:07:09 GMT

Thank you for your advice, _gile & dgorsman!

My purpose is that I will modify that block (if it is the initial block) and will create a new block (if it is copied/moved to another position)