RE: what is the best way to delete everything in a file except visible elements in view 1.

Jon Summers — Tue, 27 Jun 2017 14:44:00 GMT

In addition to Jan's comments...

[quote user="Ken Adams"]I would prefer something that would scan what I want to delete. Or is there a better way to accomplish this?[/quote]

How many times are we asked for mdlPersonal_doSomethingRemarkable()? No, there isn't a function that scans for what you want to delete: none of the MDL functions is involved with telepathy. But here's a suggestion...

Scan for elements in your chosen view
- Build a list of required Element IDs
Scan the entire DGN model
- Build a list of all Element IDs
From those lists, create a list of unrequired Element IDs
Delete those elements

[quote user="Ken Adams"]I am on Microstation SS3[/quote]

I hope you're using Viz Studio 2005 and writing C++. Use the C++ standard containers to build your lists. You may find std::map<ElementID> quite useful.

RE: what is the best way to delete everything in a file except visible elements in view 1.

Jan Šlegr — Tue, 27 Jun 2017 14:14:04 GMT

Hi Ken,

[quote user="Ken Adams"]But in years past that has not been the most reliable technique for me if the drawing has had any corruption in it.[/quote]

Well, if data are corrupted, no code can work correctly, so a question is of the right problem is discussed.

[quote user="Ken Adams"]What I would prefer is something that would scan what I want to delete. [/quote]

I don't see any difference between to scan what to keep and to scan what to delete (which I guess is not possible). If you receive a list of what to keep, you can iterate graphical elements in the model again to create inverse list and to analyze if the elements are correct. I agree it requires more time.

[quote user="Ken Adams"]Or is there a better way to accomplish this?[/quote]

I am not sure if it's better, but you can create a fence from view and using a proper fence mode, to process it's content. A disadvantage of this approach is, I guess, it can be used in graphic mode only, so e.g. not if your application is INITAPP.

[quote user="Ken Adams"]BTW, I am on Microstation SS3.[/quote]

It's not BTW! :-) According to MicroStation Programming Best practices a title of this post should be [V8i C] and in the post content you should mention exact build name, because SS3 can be whatever from an original SS3 release to Update 2.

With regards,

Jan