Index: trunk/src/board.c
===================================================================
--- trunk/src/board.c	(revision 5450)
+++ trunk/src/board.c	(revision 5451)
@@ -34,6 +34,7 @@
 #include "rtree.h"
 #include "undo.h"
 #include "draw.h"
+#include "event.h"
 
 pcb_board_t *PCB;
 
@@ -222,8 +223,7 @@
 {
 	free(PCB->Name);
 	PCB->Name = Name;
-	if (pcb_gui != NULL)
-		pcb_hid_action("PCBChanged");
+	pcb_board_changed(0);
 	return (pcb_true);
 }
 
@@ -244,8 +244,7 @@
 	else
 		pcb_crosshair_set_range(0, 0, Width, Height);
 
-	if (pcb_gui != NULL)
-		pcb_hid_action("PCBChanged");
+	pcb_board_changed(0);
 }
 
 void pcb_board_remove(pcb_board_t *Ptr)
@@ -318,3 +317,8 @@
 	PCB->Changed = New;
 }
 
+
+void pcb_board_changed(int reverted)
+{
+	pcb_event(PCB_EVENT_BOARD_CHANGED, "i", reverted);
+}
Index: trunk/src/board.h
===================================================================
--- trunk/src/board.h	(revision 5450)
+++ trunk/src/board.h	(revision 5451)
@@ -173,5 +173,6 @@
 /* sets or resets changed flag and redraws status */
 void pcb_board_set_changed_flag(pcb_bool New);
 
+void pcb_board_changed(int reverted);
 
 #endif
Index: trunk/src/event.h
===================================================================
--- trunk/src/event.h	(revision 5450)
+++ trunk/src/event.h	(revision 5451)
@@ -33,6 +33,8 @@
 	PCB_EVENT_LOAD_PRE,               /* called before loading a new design */
 	PCB_EVENT_LOAD_POST,              /* called after loading a new design, whether it was successful or not */
 
+	PCB_EVENT_BOARD_CHANGED,          /* called after the board being edited got replaced (used to be the PCBChanged action) */
+
 	PCB_EVENT_RUBBER_RESET,           /* rubber band: reset attached */
 	PCB_EVENT_RUBBER_REMOVE_ELEMENT,  /* rubber band: removed an element with rubber bands attached */
 	PCB_EVENT_RUBBER_MOVE,            /* rubber band: object moved */
Index: trunk/src/file_act.c
===================================================================
--- trunk/src/file_act.c	(revision 5450)
+++ trunk/src/file_act.c	(revision 5451)
@@ -200,9 +200,7 @@
 		pcb_crosshair_set_range(0, 0, PCB->MaxWidth, PCB->MaxHeight);
 		pcb_center_display(PCB->MaxWidth / 2, PCB->MaxHeight / 2);
 		pcb_redraw();
-
-		if (pcb_gui != NULL)
-			pcb_hid_action("PCBChanged");
+		pcb_board_changed(0);
 		pcb_notify_crosshair_change(pcb_true);
 		return 0;
 	}
Index: trunk/src/gui_act.c
===================================================================
--- trunk/src/gui_act.c	(revision 5450)
+++ trunk/src/gui_act.c	(revision 5451)
@@ -1258,8 +1258,18 @@
 	return 0;
 }
 
+static const char pcb_acts_PCBChanged[] = "PCBChanged([revert])";
+static const char pcb_acth_PCBChanged[] =
+	"Tells the GUI that the whole PCB has changed. The optional \"revert\""
+	"parameter can be used as a hint to the GUI that the same design is being"
+	"reloaded, and that it might keep some viewport settings";
+static int pcb_act_PCBChanged(int argc, const char **argv, pcb_coord_t x, pcb_coord_t y)
+{
+	const char *rv = argv == NULL ? NULL : argv[0];
+	pcb_board_changed((rv != NULL) && (strcasecmp(rv, "revert") == 0));
+	return 0;
+}
 
-
 pcb_hid_action_t gui_action_list[] = {
 	{"Display", 0, pcb_act_Display,
 	 pcb_acth_Display, pcb_acts_Display}
@@ -1267,7 +1277,8 @@
 	{"CycleDrag", 0, pcb_act_CycleDrag,
 	 pcb_acth_CycleDrag, pcb_acts_CycleDrag}
 	,
-	{"pcb_act_FullScreen", 0, pcb_act_FullScreen, pcb_acth_FullScreen, pcb_acts_FullScreen}
+	{"FullScreen", 0, pcb_act_FullScreen,
+	 pcb_acth_FullScreen, pcb_acts_FullScreen}
 	,
 	{"MarkCrosshair", 0, pcb_act_MarkCrosshair,
 	 pcb_acth_MarkCrosshair, pcb_acts_MarkCrosshair}
@@ -1295,6 +1306,9 @@
 	,
 	{"SwitchHID", 0, pcb_act_SwitchHID,
 	 pcb_acth_SwitchHID, pcb_acts_SwitchHID}
+	,
+	{"PCBChanged", 0, pcb_act_PCBChanged,
+	 pcb_acth_PCBChanged, pcb_acts_PCBChanged}
 };
 
 PCB_REGISTER_ACTIONS(gui_action_list, NULL)
Index: trunk/src/hid.h
===================================================================
--- trunk/src/hid.h	(revision 5450)
+++ trunk/src/hid.h	(revision 5451)
@@ -95,7 +95,6 @@
 
 /* Note that PCB expects the gui to provide the following actions:
 
-   PCBChanged();
    RouteStylesChanged()
    NetlistChanged()  (but core should call "void NetlistChanged(int);" in netlist.c)
    LayersChanged()
Index: trunk/src/hid_actions.c
===================================================================
--- trunk/src/hid_actions.c	(revision 5450)
+++ trunk/src/hid_actions.c	(revision 5451)
@@ -463,19 +463,6 @@
 
 %end-doc */
 
-
-static const char pcbchanged_syntax[] = "PCBChanged([revert])";
-static const char pcbchanged_help[] =
-	"Tells the GUI that the whole PCB has changed. The optional \"revert\""
-	"parameter can be used as a hint to the GUI that the same design is being"
-	"reloaded, and that it might keep some viewport settings";
-
-/* %start-doc actions PCBChanged
-
-@hidaction
-
-%end-doc */
-
 static const char routestyleschanged_syntax[] = "RouteStylesChanged()";
 static const char routestyleschanged_help[] = "Tells the GUI that the routing styles have changed.";
 
Index: trunk/src/plug_io.c
===================================================================
--- trunk/src/plug_io.c	(revision 5450)
+++ trunk/src/plug_io.c	(revision 5451)
@@ -282,7 +282,7 @@
  * if successful, update some other stuff
  *
  * If revert is pcb_true, we pass "revert" as a parameter
- * to the HID's PCBChanged action.
+ * to the pcb changed event.
  */
 static int real_load_pcb(const char *Filename, const char *fmt, pcb_bool revert, pcb_bool require_font, int how)
 {
@@ -358,12 +358,8 @@
 		if (pcb_hid_get_flag("GetStyle()") < 0)
 			pcb_use_route_style_idx(&PCB->RouteStyle, 0);
 
-		if (((how == 0) || (revert)) && (pcb_gui != NULL)) {
-			if (revert)
-				pcb_hid_actionl("PCBChanged", "revert", NULL);
-			else
-				pcb_hid_action("PCBChanged");
-		}
+		if ((how == 0) || (revert))
+			pcb_board_changed(revert);
 
 #ifdef DEBUG
 		end = clock();
@@ -384,8 +380,7 @@
 		}
 	}
 
-	if (pcb_gui != NULL)
-		pcb_hid_action("PCBChanged");
+	pcb_board_changed(0);
 
 	/* release unused memory */
 	pcb_board_remove(newPCB);
Index: trunk/src_plugins/hid_batch/batch.c
===================================================================
--- trunk/src_plugins/hid_batch/batch.c	(revision 5450)
+++ trunk/src_plugins/hid_batch/batch.c	(revision 5451)
@@ -12,6 +12,7 @@
 #include "pcb-printf.h"
 #include "plugins.h"
 #include "compat_misc.h"
+#include "event.h"
 
 #include "hid_draw_helpers.h"
 #include "hid_nogui.h"
@@ -42,8 +43,11 @@
 static void hid_batch_uninit(void)
 {
 	pcb_hid_remove_actions_by_cookie(batch_cookie);
-	if (prompt != NULL)
+	pcb_event_unbind_allcookie(batch_cookie);
+	if (prompt != NULL) {
 		free(prompt);
+		prompt = NULL;
+	}
 }
 
 static int nop(int argc, const char **argv, pcb_coord_t x, pcb_coord_t y)
@@ -51,7 +55,7 @@
 	return 0;
 }
 
-static int PCBChanged(int argc, const char **argv, pcb_coord_t x, pcb_coord_t y)
+static void ev_pcb_changed(void *user_data, int argc, pcb_event_arg_t argv[])
 {
 	if (prompt != NULL)
 		free(prompt);
@@ -66,7 +70,6 @@
 	}
 	else
 		prompt = pcb_strdup("no-board");
-	return 0;
 }
 
 static int help(int argc, const char **argv, pcb_coord_t x, pcb_coord_t y)
@@ -98,8 +101,6 @@
 }
 
 pcb_hid_action_t batch_action_list[] = {
-	{"PCBChanged", 0, PCBChanged}
-	,
 	{"RouteStylesChanged", 0, nop}
 	,
 	{"NetlistChanged", 0, nop}
@@ -339,6 +340,7 @@
 
 static pcb_hid_t batch_hid;
 
+
 pcb_uninit_t hid_hid_batch_init()
 {
 	memset(&batch_hid, 0, sizeof(pcb_hid_t));
@@ -393,9 +395,10 @@
 	batch_hid.propedit_add_value = batch_propedit_add_value;
 	batch_hid.propedit_add_stat = batch_propedit_add_stat;
 
+	pcb_event_bind(PCB_EVENT_BOARD_CHANGED, ev_pcb_changed, NULL, batch_cookie);
 
 	pcb_hid_register_hid(&batch_hid);
-	return NULL;
+	return hid_batch_uninit;
 }
 
 static void batch_begin(void)
Index: trunk/src_plugins/hid_gtk/gtkhid-main.c
===================================================================
--- trunk/src_plugins/hid_gtk/gtkhid-main.c	(revision 5450)
+++ trunk/src_plugins/hid_gtk/gtkhid-main.c	(revision 5451)
@@ -1079,16 +1079,16 @@
 
 /* ---------------------------------------------------------------------- */
 
-int PCBChanged(int argc, const char **argv, pcb_coord_t x, pcb_coord_t y)
+static void ev_pcb_changed(void *user_data, int argc, pcb_event_arg_t argv[])
 {
-	if (!ghidgui)
-		return 0;
+	if ((!ghidgui) || (!gtkhid_active))
+		return;
 
 	if (PCB != NULL)
 		ghid_window_set_name_label(PCB->Name);
 
 	if (!gport->pixmap)
-		return 0;
+		return;
 
 	if (ghidgui->route_style_selector) {
 		ghid_route_style_selector_empty(GHID_ROUTE_STYLE_SELECTOR(ghidgui->route_style_selector));
@@ -1099,7 +1099,6 @@
 	ghid_port_ranges_scale();
 	ghid_zoom_view_fit();
 	ghid_sync_with_new_layout();
-	return 0;
 }
 
 /* ---------------------------------------------------------------------- */
@@ -1971,8 +1970,6 @@
 	,
 	{"Pan", 0, PanAction, pan_help, pan_syntax}
 	,
-	{"PCBChanged", 0, PCBChanged}
-	,
 	{"PointCursor", 0, PointCursor}
 	,
 	{"Popup", 0, Popup, popup_help, popup_syntax}
@@ -2159,6 +2156,7 @@
 
 	pcb_event_bind(PCB_EVENT_SAVE_PRE, ghid_conf_save_pre_wgeo, NULL, ghid_cookie);
 	pcb_event_bind(PCB_EVENT_LOAD_POST, ghid_conf_load_post_wgeo, NULL, ghid_cookie);
+	pcb_event_bind(PCB_EVENT_BOARD_CHANGED, ev_pcb_changed, NULL, ghid_cookie);
 
 	return hid_hid_gtk_uninit;
 }
Index: trunk/src_plugins/hid_gtk/gui-output-events.c
===================================================================
--- trunk/src_plugins/hid_gtk/gui-output-events.c	(revision 5450)
+++ trunk/src_plugins/hid_gtk/gui-output-events.c	(revision 5451)
@@ -278,7 +278,7 @@
 			gdk_color_white(gport->colormap, &gport->offlimits_color);
 		first_time_done = TRUE;
 		ghid_drawing_area_configure_hook(out);
-		PCBChanged(0, NULL, 0, 0);
+		pcb_board_changed(0);
 	}
 	else {
 		ghid_drawing_area_configure_hook(out);
Index: trunk/src_plugins/hid_gtk/gui.h
===================================================================
--- trunk/src_plugins/hid_gtk/gui.h	(revision 5450)
+++ trunk/src_plugins/hid_gtk/gui.h	(revision 5451)
@@ -446,11 +446,8 @@
 /* gtkhid-main.c */
 void ghid_pan_view_rel(pcb_coord_t dx, pcb_coord_t dy);
 void ghid_get_coords(const char *msg, pcb_coord_t * x, pcb_coord_t * y);
-gint PCBChanged(int argc, const char **argv, pcb_coord_t x, pcb_coord_t y);
 
 
-
-
 extern GdkPixmap *XC_hand_source, *XC_hand_mask;
 extern GdkPixmap *XC_lock_source, *XC_lock_mask;
 extern GdkPixmap *XC_clock_source, *XC_clock_mask;
Index: trunk/src_plugins/hid_lesstif/main.c
===================================================================
--- trunk/src_plugins/hid_lesstif/main.c	(revision 5450)
+++ trunk/src_plugins/hid_lesstif/main.c	(revision 5451)
@@ -334,10 +334,10 @@
 	return 0;
 }
 
-static int PCBChanged(int argc, const char **argv, pcb_coord_t x, pcb_coord_t y)
+static void ev_pcb_changed(void *user_data, int argc, pcb_event_arg_t argv[])
 {
 	if (work_area == 0)
-		return 0;
+		return;
 	/*pcb_printf("PCB Changed! %$mD\n", PCB->MaxWidth, PCB->MaxHeight); */
 	stdarg_n = 0;
 	stdarg(XmNminimum, 0);
@@ -366,7 +366,7 @@
 		stdarg(XmNtitle, cp ? cp + 1 : PCB->Filename);
 		XtSetValues(appwidget, stdarg_args, stdarg_n);
 	}
-	return 0;
+	return;
 }
 
 
@@ -870,9 +870,6 @@
 }
 
 pcb_hid_action_t lesstif_main_action_list[] = {
-	{"PCBChanged", 0, PCBChanged,
-	 pcbchanged_help, pcbchanged_syntax}
-	,
 	{"SetUnits", 0, SetUnits,
 	 setunits_help, setunits_syntax}
 	,
@@ -1850,7 +1847,7 @@
 		XtDispatchEvent(&e);
 	}
 
-	PCBChanged(0, 0, 0, 0);
+	pcb_board_changed(0);
 
 	lesstif_menubar = menu;
 	pcb_event(PCB_EVENT_GUI_INIT, NULL);
@@ -3760,6 +3757,11 @@
 
 void lesstif_create_menu(const char *menu, const char *action, const char *mnemonic, const char *accel, const char *tip, const char *cookie);
 
+static void hid_lesstif_uninit(void)
+{
+	pcb_event_unbind_allcookie(lesstif_cookie);
+}
+
 pcb_uninit_t hid_hid_lesstif_init()
 {
 	memset(&lesstif_hid, 0, sizeof(pcb_hid_t));
@@ -3831,9 +3833,11 @@
 	lesstif_hid.create_menu = lesstif_create_menu;
 	lesstif_hid.usage = lesstif_usage;
 
+	pcb_event_bind(PCB_EVENT_BOARD_CHANGED, ev_pcb_changed, NULL, lesstif_cookie);
+
 	pcb_hid_register_hid(&lesstif_hid);
 
-	return NULL;
+	return hid_lesstif_uninit;
 }
 
 static void lesstif_begin(void)
Index: trunk/src_plugins/hid_remote/remote.c
===================================================================
--- trunk/src_plugins/hid_remote/remote.c	(revision 5450)
+++ trunk/src_plugins/hid_remote/remote.c	(revision 5451)
@@ -40,9 +40,8 @@
 	return 0;
 }
 
-static int PCBChanged(int argc, const char **argv, pcb_coord_t x, pcb_coord_t y)
+static void ev_pcb_changed(void *user_data, int argc, pcb_event_arg_t argv[])
 {
-	return 0;
 }
 
 static int help(int argc, const char **argv, pcb_coord_t x, pcb_coord_t y)
@@ -388,6 +387,7 @@
 static void hid_hid_remote_uninit()
 {
 	pcb_hid_remove_actions_by_cookie(remote_cookie);
+	pcb_event_unbind_allcookie(batch_cookie);
 }
 
 pcb_uninit_t hid_hid_remote_init()
@@ -448,6 +448,7 @@
 
 	pcb_hid_register_hid(&remote_hid);
 
+	pcb_event_bind(PCB_EVENT_BOARD_CHANGED, ev_pcb_changed, NULL, remote_cookie);
 
 	return hid_hid_remote_uninit;
 }