GTK2HS 0.10.1 comes with an OpenGL demo (share/demo/opengl/RotatingCube.hs) On my machine (Vista 32-bit) it runs fine under GHCi, but not when compiling using GHC (no rendering happens, unless I resize the window, then rendering happens from time to time) I'm using GHC 6.10.3 (installed Haskell Platform 2009.2.0.1). Do other people using Windows experience this problem? Cheers, Peter Verswyvelen