Can I do this or does it get us into trouble?

[Bill Medland]

I am trying to solve some focus problems I am having with Wine and I want to 
know just how far I can go without causing legal problems.

The main problem is that under Windows a WM_KILLFOCUS is being sent during the 
processing of a WM_SETFOCUS message.  However It doesn't appear to be being 
sent by any application code so I presume it is being sent by some Windows 
code.

If I run the application under the Windows debugger, break in the WM_KILLFOCUS 
handler and do a stack trace to look for hints, and we use the resulting 
information then does that get us into trouble (since it is going to contain 
information about e.g. user32.dll)?

Does anyone actually know?