Using windll with complex data types

[Ben C]

Hi there,

I have just started to look at the windll module. As such I have been
trauling through numerous posts/google for some clear tutorials /
basic examples on how to map data from Python IO to a dll using the
windll module to no avail (as yet).

Accessing basic functions of a dll ( ie. functions that take basic
arguments such as integers etc) are not a problem. I have found a lot
of snippets for more complex examples which I have experimeted with,
but have not been able to find anything that I could really understand
in it's entirity ... so I have come to ask humbly for advice ...

Is there a tutorial or a faq that answer the q's below? The dynwin
package doesn't seem to have one?

How does one pass reference to a pointer in a function?

How does one retrieve data back from that pointer?

How does one retrieve data back from aggregate data types such as
structures and arrays?

Thanks in advance

Ben