trouble with win version of a linux gtk app

[Manu TM <manutm007 gmail com>]

Hi!

I have made a ticker app for linux that I'm trying to port to winxp with 
mingw and msys.
The app reads then renders a text file to a pixmap (a long single-line 
image), then it scrolls the pixmap by drawing a part of it to a 
drawing_area, using gdk_draw_drawable() within a timeout handler.
The problem is it works fine on linux (the scrolling is really smooth) 
but the win version is choppy and flickering.
Does anyone have an idea? Is it a related to threads or drawing_area or 
gtk for win?

Thanks in advance.

Manu Thomas-Maurin