AutoCAD Fabrication Plugin Exception
I am trying to perform some simple manipulations on autocad objects. The API documentation and examples show using a collection Job.Items. Whenever I invoke this I get an unhandled exception: attempted to access protected memory and the code crashes.
9 Replies
this usually indicates pointers to memory space outside of the program's memory space. very likley youre not setting something up right, or a broken lib (very not likely)
can you give code?
This is very vague, please add more $details
When you ask a question, make sure you include as much detail as possible. Such as code, the issue you are facing, and what you expect the result to be. Upload code here https://paste.mod.gg/ (see $code for more information on how to paste your code)
Thanks for taking the time to reply everyone. code can be found here
https://pastebin.com/5phx8T4M
epxected behaviour when invoking the job.items collection is to a collections of objects of type Item from the Fabrication API. what i get is this
https://pastebin.com/mnU4cZPg
i have tried to bypass this using actual selection set filtering but I can not get any variables of type Item to have any value besides null
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Execption Details - Pastebin.com
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Have you consulted the Autodesk API documentation?
Are you able to debug your plugin?
To debug CAD plugins you can at the very least place a
Debugger.Launch(); in your code. Once that part of your code runs, you'll get a prompt to either connect or start a visual studio instance for debugging.
I have experience with other CAD systems.
As each system's API can be quite different, even from the same company, it isn't that simple to assist you.
Do you have access to Autodesk dev support?
Wild guess here...
The ent variable is retrieved from the transaction tr using a selection id.
Shouldn't you get your selection from the document instead of the transaction?
You say "expected" behavior. Based on your previous plugins or the documentation?Thank you for taking the time to respond.
I have consulted the API documentation as well as forums and classes from the dev team that released the API. Most of this code is copy pasta from API and dev examples.
I am debugging using Visual Studio
I do not have access to Autodesk Dev Support
the ent variable should have the doc inherited from the selection Result. See below. If i am doing that wrong please let me know.
Document doc = Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
TypedValue[] typeArray = new TypedValue[1];
typeArray[0] = new TypedValue((int)DxfCode.Start, "MAPS_SOLID");
SelectionFilter selFilter = new SelectionFilter(typeArray);
PromptSelectionResult selResult = ed.GetSelection(selFilter);
Expected behaviour is based on API docs, forum posts and an AU class showing the code working in the manner expected.
Unfortunately I do not work with AutoCAD. I work with 3D cads for engineering and architecture.
Nevertheless, I feel that it does not make sense to retrieve an entity from a transaction and it should be done from the active document instead
My DMs are open for you, if you wish to have a call and try to solve this together.
There isn't too much documentation online, as far as I can see, and even if there is, it's copy pasta of the same thing over and over again
Is this one of your sources for
Job.Items?Entity Selection to Fab Item Endpoint Mystery
Entity Selection to Fab Item Endpoint Mystery
yes it is.
in factthe lateset post on there is mine