Advanced: COM versus RAW dll call

[junkew]

I was reading today a little in the reference sources of Microsoft on the UIAutomation stuff from .NET

In that (https://referencesource.microsoft.com/#UIAutomationClient/MS/Internal/Automation/UiaCoreAPI.cs,fd71c397cd77ad1c) I found for example this 

[DllImport(DllImport.UIAutomationCore, EntryPoint = "UiaGetRootNode", CharSet = CharSet.Unicode)]
        private static extern int RawUiaGetRootNode(out SafeNodeHandle hnode);

And based on that found this interesting article

https://blogs.msdn.microsoft.com/winuiautomation/2010/11/03/porting-our-provider-to-the-uia-com-api/

That raises to me the question

1. can I use native entrypoints in dll as opposed to the com/objcreateinterface solution?

2. Would it be easier then what I did so far in UIAutomation UDF in examples section?

edit: https://msdn.microsoft.com/en-us/library/windows/desktop/ee671214(v=vs.85).aspx

So seems to be documented however deprecated in favor of the com interfaces (which seems to be a wrapper around the deprecated functions ;-) ) 

Edited November 5, 2017 by junkew
seems deprecated funcitons