[Interest] qmake -query

[tang ke]

hi everybody!
Now I download the qt-opensource-mingw32-4.8.2.zip from the web. and 
install it.

but after I use the qmake -unset QT_VERSION commands, then I use qmake 
-query, It can display the QT_VERSION .

who can tell me where the qmake -set prop value is stored with windows?

thanks in advance.

qt version:4.8.2
OS:windows xp

-- 
应用部  唐科
TEL : 0512-52308661-88686
FAX: 0512-52308688
MP : 18962393077
E-mail: tangk at lemote.com
地址：江苏省常熟市虞山镇梦兰工业园