Event definitions in Solidworks

This question has been asked a few times before. There is no clear answer that I can see.

I am having an issue with some C# code when I load a drawing file but not all the parts/assemblies in the views are loaded.

I need to know that Solidworks is in the middle of loading a file be it a part, assembly or drawing so I don't try to use a file that is partially loaded.

In the link posted above there are events listed but no documentation about what each event actually does - I hate to assume.

How can I tell when a part, assembly and drawing file and it's components are completely loaded?

SolidworksApi/macros