This significantly robustifies the progress gauge and friends. I have disabled the quit button for now since processing events for this causes too many problems. I have a better solution in mind. I also cannot reproduce the crash I was having under X. I would be interested if John Turner's crashes still occur (I assume yes since I haven't fixed anything that makes me think they would be gone). I also need to know if Steve's crashes occur with this since the fix I have actually applied to glyphs.c is different to the one I posted a couple of days ago. Ben's claim about hashing was prophetic as it turns out ..... andy 2000-03-24 Andy Piper <andy(a)xemacs.org&gt; * gutter-items.el (add-tab-to-gutter): use copy-sequence. (abort-progress-display): ditto. Don't delete the created extent. (raw-append-progress-display): ditto. (progress-display-dispatch-non-command-events): new function. Encapsulates what we want to do when no command input is required. (progress-display-dispatch-command-events): likewise, but disable for now since it causes too many problems. (append-progress-display): use them. (raw-append-progress-display): ditto. (default-gutter-position-changed-hook): set this rather than default-gutter-position-changed. (default-gutter-position-changed-hook): lambda with zero arguments rather than one. (raw-append-progress-display): trap errors in pending input since allowing them to signal will hose the gauge well and truly. Ideally we would like to delay these until we are more able to cope. (append-progress-display): ditto. 2000-03-24 Andy Piper <andy(a)xemacs.org&gt; * redisplay-output.c (compare_runes): use image_instance_changed to detect changes. Do not depend on glyphs_changed, only depend on dirtiness. (redisplay_output_layout): add debug messages. (compare_runes): ditto. * glyphs.h: declare new functions. (struct Lisp_Image_Instance): remove percent and associated accessors. * gui.h: declare new copying functions. * gui.c (copy_gui_item_tree): new function. (copy_gui_item): new function. (gui_item_id_hash): revert to standard hash. (gui_item_hash): ditto. (gui_item_hash_internal): deleted. (mark_gui_item): mark value. (gui_item_add_keyval_pair): add value. (gui_item_init): ditto. (gui_add_item_keywords_to_plist): ditto. (gui_item_equal): ditto. (syms_of_gui): add Q_value. * glyphs-x.c (x_progress_gauge_update): use pending items and value for setting the state. (x_update_widget): don't set items from pending here. * glyphs-widget.c (update_widget): update items here. (progress_gauge_set_property): use items for storing value. Put new value in pending items. * glyphs-msw.c (mswindows_progress_gauge_update): use pending items for new value. Convert percent -> value. (mswindows_tab_control_update): don't update items here. * glyphs.c (Fupdate_widget_instances): use image_instance_changed. (update_subwindow): ditto. (image_instance_changed): new function. Compare hash values and past and present widget items. (image_instantiate): We more careful about where we instantiate things. (image_instantiate): add error checking. * gutter.c (syms_of_gutter): use -hook. 2000-03-22 Andy Piper <andy(a)xemacs.org&gt; * config.h.in: add ERROR_CHECK_GLYPHS. * configure.in: add error_check_glyphs. -------------------------------------------------------------- Dr Andy Piper Senior Consultant Architect, BEA Systems Ltd