Does anybody know how to force WM_MEASUREITEM? In particular, for a owner drawn menu?

I googled for it, but couldnt find an answer that works for me. I heard suggestions to modify a menu item, but that didnt work. I finally got it to work with brute force -- recreate the entire menu each time I want it to be re-measured. I was wondering if anyone knew an easier 'trick'?

Also, when I'm handling WM_MEASUREITEM (for owner drawn popup menu), I cant access the HMENU, unless I saved it in the 'data' field of MENUITEMINFO. Does anyone know of a way to access the HMENU inside WM_MEASUREITEM without having saved the HMENU?

Thanks,
-Martin