Hi! I have made some improvements to Graphics.X11.Xlib.Image. Currently it is made as a independent library which provides extended functionality (mostly I was interested in saving screen shots of windows), but I could be easily moved to Graphics.X11.Xlib.Image. Please see attached files. image.c and image.h is additional C code required, Image.hsc is an interface to: PlaneMask, allPlanes, Image(..), getImage, getPixel, writeBitmapFile, getHeader, readColors, getXwdColor, freeReadColors, saveImage Some links: http://tronche.com/gui/x/xlib/graphics/XGetImage.html http://tronche.com/gui/x/xlib/utilities/XWriteBitmapFile.html saveImage is a helper function for saving screen shots. Mitar