Index: trunk/src_plugins/dialogs/dlg_pref.c
===================================================================
--- trunk/src_plugins/dialogs/dlg_pref.c	(revision 35838)
+++ trunk/src_plugins/dialogs/dlg_pref.c	(revision 35839)
@@ -49,13 +49,40 @@
 static lht_node_t *pref_dlg2conf_pre(pref_ctx_t *ctx);
 static void pref_dlg2conf_post(pref_ctx_t *ctx);
 
+
+void Rnd_pref_init_func_dummy(pref_ctx_t *ctx, int tab) { }
+
+#define PREF_INIT_FUNC Rnd_pref_init_func_dummy
+
+#define PREF_INIT(ctx) \
+	PREF_INIT_FUNC(ctx, PREF_TAB-1);
+
+/* application tabs */
+#undef  PREF_TAB
+#define PREF_TAB 0
 #include "dlg_pref_general.c"
+
+#undef  PREF_TAB
+#define PREF_TAB 1
 #include "dlg_pref_board.c"
+
+#undef  PREF_TAB
+#define PREF_TAB 2
 #include "dlg_pref_sizes.c"
+
+#undef  PREF_TAB
+#define PREF_TAB 3
 #include "dlg_pref_lib.c"
+
+#undef  PREF_TAB
+#define PREF_TAB 4
 #include "dlg_pref_layer.c"
+
+#undef  PREF_TAB
+#define PREF_TAB 5
 #include "dlg_pref_color.c"
 
+/* built-in tabs */
 #include "dlg_pref_win.c"
 #include "dlg_pref_key.c"
 #include "dlg_pref_menu.c"
@@ -466,8 +493,8 @@
 	rnd_event_bind(RND_EVENT_BOARD_META_CHANGED, pref_ev_board_meta_changed, &pref_ctx, pref_cookie);
 	rnd_event_bind(RND_EVENT_MENU_CHANGED, pref_ev_menu_changed, &pref_ctx, pref_cookie);
 	pref_hid = rnd_conf_hid_reg(pref_cookie, &pref_conf_cb);
-	pcb_dlg_pref_sizes_init(&pref_ctx);
-	pcb_dlg_pref_lib_init(&pref_ctx);
+
+	PREF_INIT_FUNC(&pref_ctx, PREF_TAB);
 }
 
 void pcb_dlg_pref_uninit(void)
Index: trunk/src_plugins/dialogs/dlg_pref_board.c
===================================================================
--- trunk/src_plugins/dialogs/dlg_pref_board.c	(revision 35838)
+++ trunk/src_plugins/dialogs/dlg_pref_board.c	(revision 35839)
@@ -2,7 +2,7 @@
  *                            COPYRIGHT
  *
  *  pcb-rnd, interactive printed circuit board design
- *  Copyright (C) 2018 Tibor 'Igor2' Palinkas
+ *  Copyright (C) 2018,2021 Tibor 'Igor2' Palinkas
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -103,3 +103,11 @@
 			RND_DAD_CHANGE_CB(ctx->dlg, pref_board_edit_attr);
 		RND_DAD_END(ctx->dlg);
 }
+
+static void pcb_dlg_pref_board_init(pref_ctx_t *ctx, int tab)
+{
+	PREF_INIT(ctx);
+	rnd_trace("INIT pref board tab %d\n", tab);
+}
+#undef PREF_INIT_FUNC
+#define PREF_INIT_FUNC pcb_dlg_pref_board_init
Index: trunk/src_plugins/dialogs/dlg_pref_color.c
===================================================================
--- trunk/src_plugins/dialogs/dlg_pref_color.c	(revision 35838)
+++ trunk/src_plugins/dialogs/dlg_pref_color.c	(revision 35839)
@@ -2,7 +2,7 @@
  *                            COPYRIGHT
  *
  *  pcb-rnd, interactive printed circuit board design
- *  Copyright (C) 2018 Tibor 'Igor2' Palinkas
+ *  Copyright (C) 2018,2021 Tibor 'Igor2' Palinkas
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -167,3 +167,11 @@
 
 	RND_DAD_END(ctx->dlg);
 }
+
+static void pcb_dlg_pref_color_init(pref_ctx_t *ctx, int tab)
+{
+	PREF_INIT(ctx);
+	rnd_trace("INIT pref color tab %d\n", tab);
+}
+#undef PREF_INIT_FUNC
+#define PREF_INIT_FUNC pcb_dlg_pref_color_init
Index: trunk/src_plugins/dialogs/dlg_pref_general.c
===================================================================
--- trunk/src_plugins/dialogs/dlg_pref_general.c	(revision 35838)
+++ trunk/src_plugins/dialogs/dlg_pref_general.c	(revision 35839)
@@ -2,7 +2,7 @@
  *                            COPYRIGHT
  *
  *  pcb-rnd, interactive printed circuit board design
- *  Copyright (C) 2018 Tibor 'Igor2' Palinkas
+ *  Copyright (C) 2018,2021 Tibor 'Igor2' Palinkas
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -91,3 +91,11 @@
 		RND_DAD_END(ctx->dlg);
 	RND_DAD_END(ctx->dlg);
 }
+
+static void pcb_dlg_pref_general_init(pref_ctx_t *ctx, int tab)
+{
+	PREF_INIT(ctx);
+	rnd_trace("INIT pref general tab %d\n", tab);
+}
+#undef PREF_INIT_FUNC
+#define PREF_INIT_FUNC pcb_dlg_pref_general_init
Index: trunk/src_plugins/dialogs/dlg_pref_layer.c
===================================================================
--- trunk/src_plugins/dialogs/dlg_pref_layer.c	(revision 35838)
+++ trunk/src_plugins/dialogs/dlg_pref_layer.c	(revision 35839)
@@ -2,7 +2,7 @@
  *                            COPYRIGHT
  *
  *  pcb-rnd, interactive printed circuit board design
- *  Copyright (C) 2018 Tibor 'Igor2' Palinkas
+ *  Copyright (C) 2018,2021 Tibor 'Igor2' Palinkas
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -59,3 +59,11 @@
 			RND_DAD_COMPFLAG(ctx->dlg, RND_HATF_EXPFILL);
 	RND_DAD_END(ctx->dlg);
 }
+
+static void pcb_dlg_pref_layer_init(pref_ctx_t *ctx, int tab)
+{
+	PREF_INIT(ctx);
+	rnd_trace("INIT pref layer tab %d\n", tab);
+}
+#undef PREF_INIT_FUNC
+#define PREF_INIT_FUNC pcb_dlg_pref_layer_init
Index: trunk/src_plugins/dialogs/dlg_pref_lib.c
===================================================================
--- trunk/src_plugins/dialogs/dlg_pref_lib.c	(revision 35838)
+++ trunk/src_plugins/dialogs/dlg_pref_lib.c	(revision 35839)
@@ -2,7 +2,7 @@
  *                            COPYRIGHT
  *
  *  pcb-rnd, interactive printed circuit board design
- *  Copyright (C) 2018 Tibor 'Igor2' Palinkas
+ *  Copyright (C) 2018,2021 Tibor 'Igor2' Palinkas
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -467,11 +467,14 @@
 	pref_lib_conf2dlg_post(cn, -1);
 }
 
-void pcb_dlg_pref_lib_init(pref_ctx_t *ctx)
+void pcb_dlg_pref_lib_init(pref_ctx_t *ctx, int tab)
 {
 	static rnd_conf_hid_callbacks_t cbs_spth;
 	rnd_conf_native_t *cn = rnd_conf_get_field("rc/library_search_paths");
 
+	PREF_INIT(ctx);
+	rnd_trace("INIT pref lib tab %d\n", tab);
+
 	if (cn != NULL) {
 		memset(&cbs_spth, 0, sizeof(rnd_conf_hid_callbacks_t));
 		cbs_spth.val_change_pre = pref_lib_conf2dlg_pre;
@@ -479,3 +482,6 @@
 		rnd_conf_hid_set_cb(cn, pref_hid, &cbs_spth);
 	}
 }
+
+#undef PREF_INIT_FUNC
+#define PREF_INIT_FUNC pcb_dlg_pref_lib_init
Index: trunk/src_plugins/dialogs/dlg_pref_lib.h
===================================================================
--- trunk/src_plugins/dialogs/dlg_pref_lib.h	(revision 35838)
+++ trunk/src_plugins/dialogs/dlg_pref_lib.h	(revision 35839)
@@ -15,7 +15,6 @@
 
 void pcb_dlg_pref_lib_close(pref_ctx_t *ctx);
 void pcb_dlg_pref_lib_create(pref_ctx_t *ctx);
-void pcb_dlg_pref_lib_init(pref_ctx_t *ctx);
 void pcb_dlg_pref_lib_open(pref_ctx_t *ctx);
 
 
Index: trunk/src_plugins/dialogs/dlg_pref_sizes.c
===================================================================
--- trunk/src_plugins/dialogs/dlg_pref_sizes.c	(revision 35838)
+++ trunk/src_plugins/dialogs/dlg_pref_sizes.c	(revision 35839)
@@ -2,7 +2,7 @@
  *                            COPYRIGHT
  *
  *  pcb-rnd, interactive printed circuit board design
- *  Copyright (C) 2018 Tibor 'Igor2' Palinkas
+ *  Copyright (C) 2018,2021 Tibor 'Igor2' Palinkas
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -157,11 +157,14 @@
 	RND_DAD_END(ctx->dlg);
 }
 
-void pcb_dlg_pref_sizes_init(pref_ctx_t *ctx)
+static void pcb_dlg_pref_sizes_init(pref_ctx_t *ctx, int tab)
 {
 	static rnd_conf_hid_callbacks_t cbs_isle;
 	rnd_conf_native_t *cn = rnd_conf_get_field("design/poly_isle_area");
 
+	PREF_INIT(ctx);
+	rnd_trace("INIT pref sizes tab %d\n", tab);
+
 	if (cn != NULL) {
 		memset(&cbs_isle, 0, sizeof(rnd_conf_hid_callbacks_t));
 		cbs_isle.val_change_post = pref_isle_brd2dlg;
@@ -168,3 +171,6 @@
 		rnd_conf_hid_set_cb(cn, pref_hid, &cbs_isle);
 	}
 }
+
+#undef PREF_INIT_FUNC
+#define PREF_INIT_FUNC pcb_dlg_pref_sizes_init
Index: trunk/src_plugins/dialogs/dlg_pref_sizes.h
===================================================================
--- trunk/src_plugins/dialogs/dlg_pref_sizes.h	(revision 35838)
+++ trunk/src_plugins/dialogs/dlg_pref_sizes.h	(revision 35839)
@@ -9,7 +9,6 @@
 
 void pcb_dlg_pref_sizes_close(pref_ctx_t *ctx);
 void pcb_dlg_pref_sizes_create(pref_ctx_t *ctx);
-void pcb_dlg_pref_sizes_init(pref_ctx_t *ctx);
 
 
 #endif