Anyway it looks as though wine doesn't attempt to make any ICCCM calls with the ptMaxTrackSize value in the structure obtained with WM_GETMINMAXINFO or for FlashWindow.
These sound likely, ICCCM is rather large. For FlashWindow it'd need to set the urgency bit:
http://www.freedesktop.org/standards/wm-spec/1.3/html/x362.html
Before I look into how I could implement this, is there a reason it isn't done or is anyone else working on it?
Not that I know of. I've done some work lately on making wine more EWMH compliant, but both these areas appear to be about ICCCM compliance instead. Just make sure you don't use any KDE specific protocols :)
thanks -mike