+# ifdef HAVE_SGI_SAVER_EXTENSION
+ int sgi_saver_ext_event_number;
+ int sgi_saver_ext_error_number;
+# endif
+
+
+ /* =======================================================================
+ blanking
+ ======================================================================= */
+
+ Bool screen_blanked_p; /* Whether the saver is currently active. */
+ Window mouse_grab_window; /* Window holding our mouse grab */
+ Window keyboard_grab_window; /* Window holding our keyboard grab */
+
+
+ /* =======================================================================
+ locking
+ ======================================================================= */
+
+ Bool locking_disabled_p; /* Sometimes locking is impossible. */
+ char *nolock_reason; /* This is why. */
+ Bool locked_p; /* Whether the screen is currently locked. */
+ Bool dbox_up_p; /* Whether the demo-mode or passwd dialogs
+ are currently visible */
+
+ /* =======================================================================
+ demoing
+ ======================================================================= */
+
+ Bool demo_mode_p; /* Whether demo-mode is active */
+ char *demo_hack; /* The hack that has been selected from the
+ dialog box, which should be run next. */
+
+
+ /* =======================================================================
+ asking questions
+ ======================================================================= */
+
+ Bool question_up_p; /* Whether the question dialog is currently
+ visible. */
+ Widget question_dialog; /* The question dialog, if any. */
+
+
+ /* =======================================================================
+ timers
+ ======================================================================= */
+
+ XtIntervalId lock_id; /* Timer to implement `prefs.lock_timeout' */
+ XtIntervalId cycle_id; /* Timer to implement `prefs.cycle' */
+ XtIntervalId timer_id; /* Timer to implement `prefs.timeout' */
+ XtIntervalId watchdog_id; /* Timer to implement `prefs.watchdog */
+ XtIntervalId check_pointer_timer_id; /* `prefs.pointer_timeout' */
+
+ time_t last_activity_time; /* Used only when no server exts. */
+ saver_screen_info *last_activity_screen;
+
+
+ /* =======================================================================
+ remote control
+ ======================================================================= */
+
+ int next_mode_p; /* Set to 1 if the NEXT ClientMessage has just
+ been received; set to 2 if PREV has just
+ been received. (#### This is nasty.) */
+
+ /* =======================================================================
+ subprocs
+ ======================================================================= */
+
+ XtIntervalId stderr_popup_timer;
+
+};
+
+
+/* This structure holds all the data that applies to the screen-specific parts
+ of the display connection; if the display has multiple screens, there will
+ be one of these for each screen.
+ */
+struct saver_screen_info {
+ saver_info *global;
+
+ Screen *screen;
+ Widget toplevel_shell;
+
+ /* =======================================================================
+ blanking
+ ======================================================================= */
+
+ Window screensaver_window; /* The window that will impersonate the root,
+ when the screensaver activates. Note that
+ the window stored here may change, as we
+ destroy and recreate it on different
+ visuals. */
+ Colormap cmap; /* The colormap that goes with the window. */
+ Bool install_cmap_p; /* whether we should use our own colormap.
+ This can be overridden on a per-hack basis.
+ */
+ Visual *current_visual; /* The visual of the window. */
+ Visual *default_visual; /* visual to use when none other specified */
+ int current_depth; /* How deep the visual (and the window) are. */
+
+ Window real_vroot; /* The original virtual-root window. */
+ Window real_vroot_value; /* What was in the __SWM_VROOT property. */
+
+ Cursor cursor; /* A blank cursor that goes with the
+ real root window. */
+ unsigned long black_pixel; /* Black, allocated from `cmap'. */
+
+# ifdef HAVE_MIT_SAVER_EXTENSION
+ Window server_mit_saver_window;
+# endif
+
+
+ /* =======================================================================
+ demoing
+ ======================================================================= */
+
+ Colormap demo_cmap; /* The colormap that goes with the dialogs:
+ this might be the same as `cmap' so care
+ must be taken not to free it while it's
+ still in use. */
+
+ /* =======================================================================
+ timers
+ ======================================================================= */
+
+ int poll_mouse_last_root_x; /* Used only when no server exts. */
+ int poll_mouse_last_root_y;
+ Window poll_mouse_last_child;
+ unsigned int poll_mouse_last_mask;
+
+
+ /* =======================================================================
+ subprocs
+ ======================================================================= */
+
+ int current_hack; /* Index into `prefs.screenhacks' */
+ pid_t pid;
+
+ int stderr_text_x;
+ int stderr_text_y;
+ int stderr_line_height;
+ XFontStruct *stderr_font;
+ GC stderr_gc;
+ Window stderr_overlay_window; /* Used if the server has overlay planes */
+ Colormap stderr_cmap;
+};
+
+
+\f
+
+/* =======================================================================
+ server extensions and virtual roots
+ ======================================================================= */
+
+extern void restore_real_vroot (saver_info *si);
+extern void disable_builtin_screensaver (saver_info *si, Bool turn_off_p);
+extern Bool ensure_no_screensaver_running (Display *, Screen *);
+
+#ifdef HAVE_MIT_SAVER_EXTENSION
+extern Bool query_mit_saver_extension (saver_info *);