_Document vs Document

[noontz]

Hi..  I´m a little insecure on this issue. Hope someone can straighten it out.

The eventhandler for ApplicationEvents.OnSaveDocument first parameter is of the type _Document

There is no search results in the help file ( nor this forum or related blogs ) for _Document except for an example on the use of DrawingViews.AddBaseView() where it also shows up as the first parameter.

Is _Document the exact same type as Document ? Changing the type to Document in the eventhandler compiles and works?  What´s the catch?? Is this a consistent naming convention throughout the API ( Is _Application the same as Application )  

Just to elaborate on my confusion:  Do not use underscores, hyphens, or any other nonalphanumeric characters.

Some clarification would be most appreciated

[adam.nagy · Accepted solution]

Hi,

If you look at the definition of each then it seems that _Document is the class and Document is the interface. 

As you can see it's not Inventor specific as you can find similar things about Word: http://www.add-in-express.com/forum/read.php?FID=5&TID=3388

You should just use whatever is offered by Visua Studio when creating the event handler.

Cheers,

[noontz]

Thanks alot for your reply Adam!

So if I understand this right Document is upcasted to _Document in the eventhandler & that´s why it works anyway.

Makes sense..  I just get a little nervous when unexposed ( and unexplained ) classes show up