dowdy old 3.1 zoom gadget question

[peroxidechicken]

Before I get started, I sticking with 3.1 even if this is a non-issue for the later OSs.  I'm trying to put a simple, graphical interface together and I've gotten very side-tracked into zoom-gadget functionality.  I know a window can be sized and moved with calls to intuition but can the window fields for the zoom co-ordinates be changed (legally or illegally) after the window has been opened?  

I'm using assembler because...  I can.   :-)  And, just in case you're wondering - if you're also of the belief that clicking the zoom gadget after moving the window zooms the window back to the old top-left co-ordinates is undesired window behaviour, that's why I'm bothering to toy with live system structures.  

Any comments or help will be appreciated.  

[peroxidechicken]

At the risk of talking to myself, I found out what I needed to know.  It seems that a window structure is actually a little bigger than the RKMs say.  There are 4 word-sized fields 140 bytes (give or take) from the start of a window structure that hold the windows zoom coordinated - and the 4 word fields before that are where the non-zoomed coordinates get saved to.  

Expect to see an annoying little application of limited functionality some time whenever.   :-)