event box on windows

[drkmkzs <drkmkzs gmail com>]

Hello, 

I am porting an old application using Gtkmm2 on windows 7.

I have a problem with eventBox that appears with black background, I was wondering if it was a known problem or a problem of mine ?

I've seen some post about making transparent backgroud so I guess I can try that way, but I wanted to know if someone had seen the problem ?

Thanks :)