The menubar in the GTK port is flashing a lot more than I like when switching buffers temporarily. I couldn't quite figure out why the lwlib menus did not update as frequently. Basically, in menubar-gtk.c, there is a function called menu_create_menubar() that converts a menubar description into appropriate GTK widgets. It first deletes everything in the current menubar, then gcpros the callbacks, and then creates the actual top-level menu items. The X specific code just creates the widget_value list... does lwlib do something smart like delay the creation of the menu until the next redisplay? set_frame_menubar seems to get called _VERY_ often, even when inside a save-excursion. The main offenders seem to be mouse-motion over the grep or speedbar buffers. Thanks! -Bill P. PS: The GTK port is pretty damn solid now if anyone wants to check it out. Toolbars, menubars, scrollbars, drag&drop, etc. Only major thing left is that selection handling sucks. I modelled it after the windows version, but it appears that confuses people used to the X behaviour. Oh well, I guess I'll have to rewrite it to be more x-like.