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xarial / xcad

Framework for developing CAD applications for SOLIDWORKS, including add-ins, stand-alone applications, macro features, property manager pages, etc.
https://xcad.net
MIT License
126 stars 25 forks source link

some question about the document event handler #98

Closed Brent-bai closed 1 year ago

Brent-bai commented 1 year ago

When I use sw Saveas function, Xcad can not catch the old file closing or destroyed event. And the Application.Documents.RegisterHandler can not return a value, so I can not know when the DocumentSaveArgs have done his job. As a example, I want to delete the old file after changing the name of the a part(in Saveas function), but I can not add any function in the DocumentHandler, because the DocumentSaveArgs wont release the old file before the DocumentHandler has done the whole job. So I add a new eventhandler to catch the Saveas function as releasing the old file, but it does not worked.

artem1t commented 1 year ago

Interesting question. SOLIDWORKS seems to be not changing the point of the IModelDoc2 (ISwDocument) when the file is saved as (renamed) so the original pointer stays alive and thus the file is not closed/reopened, so the Destroyed is not called and RegisterHandler as well.

I think what you can do is within the SaveAs handler subscribe to IXApplication::Idle notification and this should be raised after the operation is complete so you can subscribe from this event and delete your old file. To be safer you can check if the file was released before deleting it and only unsubscribe from Idle once it is released.

Brent-bai commented 1 year ago

Thank you, IXApplication::Idle worked.