black promt window

[Patrik Krizan <krizan informatik uni-frankfurt de>]

Hi,
i'm newbie in gtk and i want develop applications on windows xp. i'm 
running gtk2.0, cygwin and eclipse. i compiled 'hello world' application 
(exact copied from tutorial) and it works fine. however, if i start it, 
i get a black promt window like this 
http://www.informatik.uni-frankfurt.de/~krizan/black_promt.jpg
too. it is possible to avoid this black window?
thanks
patrik