Index: trunk/src/gui_act.c
===================================================================
--- trunk/src/gui_act.c	(revision 28066)
+++ trunk/src/gui_act.c	(revision 28067)
@@ -897,7 +897,7 @@
 		return 0;
 	}
 	if (layer != CURRENT) {
-		pcb_layervis_change_group_vis(pcb_layer_id(PCB->Data, layer), pcb_true, pcb_true);
+		pcb_layervis_change_group_vis(PCB_ACT_HIDLIB, pcb_layer_id(PCB_ACT_BOARD->Data, layer), pcb_true, pcb_true);
 		pcb_hid_redraw(PCB);
 	}
 	PCB_ACT_IRES(0);
@@ -1438,7 +1438,7 @@
 	if (pcb_strcasecmp(name, "silk") == 0) {
 		PCB->RatDraw = 0;
 		if (pcb_layer_list(PCB, PCB_LYT_VISIBLE_SIDE() | PCB_LYT_SILK, &lid, 1) > 0) {
-			pcb_layervis_change_group_vis(lid, 1, 1);
+			pcb_layervis_change_group_vis(PCB_ACT_HIDLIB, lid, 1, 1);
 		}
 		else {
 			pcb_message(PCB_MSG_ERROR, "Can't find this-side silk layer\n");
@@ -1462,7 +1462,7 @@
 	}
 
 	PCB->RatDraw = 0;
-	pcb_layervis_change_group_vis(atoi(name)-1, 1, 1);
+	pcb_layervis_change_group_vis(PCB_ACT_HIDLIB, atoi(name)-1, 1, 1);
 	pcb_gui->invalidate_all(pcb_gui);
 	pcb_event(PCB_ACT_HIDLIB, PCB_EVENT_LAYERVIS_CHANGED, NULL);
 	return 0;
@@ -1550,7 +1550,7 @@
 	}
 	else if (pcb_strcasecmp(name, "silk") == 0) {
 		if (pcb_layer_list(PCB, PCB_LYT_VISIBLE_SIDE() | PCB_LYT_SILK, &lid, 1) > 0)
-			pcb_layervis_change_group_vis(lid, -1, 0);
+			pcb_layervis_change_group_vis(PCB_ACT_HIDLIB, lid, -1, 0);
 		else
 			pcb_message(PCB_MSG_ERROR, "Can't find this-side silk layer\n");
 	}
@@ -1579,7 +1579,7 @@
 		char *end;
 		int id = strtol(name, &end, 10) - 1;
 		if (*end == '\0') { /* integer layer */
-			pcb_layervis_change_group_vis(id, -1, 0);
+			pcb_layervis_change_group_vis(PCB_ACT_HIDLIB, id, -1, 0);
 			pcb_gui->invalidate_all(pcb_gui);
 			pcb_event(PCB_ACT_HIDLIB, PCB_EVENT_LAYERVIS_CHANGED, NULL);
 			return 0;
Index: trunk/src/hid_cam.c
===================================================================
--- trunk/src/hid_cam.c	(revision 28066)
+++ trunk/src/hid_cam.c	(revision 28067)
@@ -472,7 +472,7 @@
 			}
 			if (pcb->LayerGroups.grp[gid].len <= 0)
 				continue;
-			pcb_layervis_change_group_vis(pcb->LayerGroups.grp[gid].lid[0], 1, 0);
+			pcb_layervis_change_group_vis(&pcb->hidlib, pcb->LayerGroups.grp[gid].lid[0], 1, 0);
 			dst->grp_vis[gid] = 1;
 
 			parse_layer_supplements(spk, spv, spc, &purpose, &xf, &xf_);
@@ -507,7 +507,7 @@
 						offs--;
 					if ((offs >= 0) && (offs < len)) {
 						pcb_layergrp_id_t gid = gids[offs];
-						pcb_layervis_change_group_vis(pcb->LayerGroups.grp[gid].lid[0], 1, 0);
+						pcb_layervis_change_group_vis(&pcb->hidlib, pcb->LayerGroups.grp[gid].lid[0], 1, 0);
 						dst->grp_vis[gid] = 1;
 						if (xf != NULL) {
 							dst->xform[gid] = &dst->xform_[gid];
@@ -518,7 +518,7 @@
 				else {
 					for(n = 0; n < len; n++) {
 						pcb_layergrp_id_t gid = gids[n];
-						pcb_layervis_change_group_vis(pcb->LayerGroups.grp[gid].lid[0], 1, 0);
+						pcb_layervis_change_group_vis(&pcb->hidlib, pcb->LayerGroups.grp[gid].lid[0], 1, 0);
 						dst->grp_vis[gid] = 1;
 						if (xf != NULL) {
 							dst->xform[gid] = &dst->xform_[gid];
Index: trunk/src/layer.c
===================================================================
--- trunk/src/layer.c	(revision 28066)
+++ trunk/src/layer.c	(revision 28067)
@@ -697,7 +697,7 @@
 		g->lid[grp_idx] = new_lid;
 		g->len++;
 		pcb_event(&pcb->hidlib, PCB_EVENT_LAYERS_CHANGED, NULL);
-		pcb_layervis_change_group_vis(new_lid, 1, 1);
+		pcb_layervis_change_group_vis(&pcb->hidlib, new_lid, 1, 1);
 		pcb_event(&pcb->hidlib, PCB_EVENT_LAYERVIS_CHANGED, NULL);
 		at = new_lid;
 	}
Index: trunk/src/layer_vis.c
===================================================================
--- trunk/src/layer_vis.c	(revision 28066)
+++ trunk/src/layer_vis.c	(revision 28067)
@@ -78,7 +78,7 @@
  * changes the visibility of all layers in a group
  * returns the number of changed layers
  */
-int pcb_layervis_change_group_vis(pcb_layer_id_t Layer, int On, pcb_bool ChangeStackOrder)
+int pcb_layervis_change_group_vis(pcb_hidlib_t *hl, pcb_layer_id_t Layer, int On, pcb_bool ChangeStackOrder)
 {
 	pcb_layergrp_id_t group;
 	int i, changed = 1;		/* at least the current layer changes */
@@ -123,7 +123,7 @@
 
 	done:;
 	/* update control panel and exit */
-	pcb_event(&PCB->hidlib, PCB_EVENT_LAYERVIS_CHANGED, NULL);
+	pcb_event(hl, PCB_EVENT_LAYERVIS_CHANGED, NULL);
 	return changed;
 }
 
@@ -156,7 +156,7 @@
 
 	/* Bring the top copper group to the front and make it active.  */
 	if (pcb_layer_list(PCB, PCB_LYT_TOP | PCB_LYT_COPPER, &comp, 1) > 0)
-		pcb_layervis_change_group_vis(comp, 1, 1);
+		pcb_layervis_change_group_vis(&PCB->hidlib, comp, 1, 1);
 }
 
 /* ---------------------------------------------------------------------------
Index: trunk/src/layer_vis.h
===================================================================
--- trunk/src/layer_vis.h	(revision 28066)
+++ trunk/src/layer_vis.h	(revision 28067)
@@ -36,7 +36,7 @@
 
 /* changes the visibility of all layers in a group; returns the number of
    changed layers; on should be 0 or 1 for setting the state or -1 for toggling it */
-int pcb_layervis_change_group_vis(pcb_layer_id_t Layer, int On, pcb_bool ChangeStackOrder);
+int pcb_layervis_change_group_vis(pcb_hidlib_t *hl, pcb_layer_id_t Layer, int On, pcb_bool ChangeStackOrder);
 
 /* resets the layer visibility stack setting */
 void pcb_layervis_reset_stack(void);
Index: trunk/src_plugins/cam/cam_compile.c
===================================================================
--- trunk/src_plugins/cam/cam_compile.c	(revision 28066)
+++ trunk/src_plugins/cam/cam_compile.c	(revision 28067)
@@ -171,7 +171,7 @@
 	if (have_gui) {
 		pcb_hid_restore_layer_ons(save_l_ons);
 		pcb_hid_restore_layergrp_ons(save_g_ons);
-		pcb_layervis_change_group_vis(currly, 1, 1);
+		pcb_layervis_change_group_vis(&PCB->hidlib, currly, 1, 1);
 		pcb_event(&PCB->hidlib, PCB_EVENT_LAYERVIS_CHANGED, NULL);
 	}
 
Index: trunk/src_plugins/dialogs/dlg_export.c
===================================================================
--- trunk/src_plugins/dialogs/dlg_export.c	(revision 28066)
+++ trunk/src_plugins/dialogs/dlg_export.c	(revision 28067)
@@ -98,7 +98,7 @@
 	if (have_gui) {
 		pcb_hid_restore_layer_ons(save_l_ons);
 		pcb_hid_restore_layergrp_ons(save_g_ons);
-		pcb_layervis_change_group_vis(currly, 1, 1);
+		pcb_layervis_change_group_vis(&PCB->hidlib, currly, 1, 1);
 		pcb_event(&PCB->hidlib, PCB_EVENT_LAYERVIS_CHANGED, NULL);
 	}
 }
Index: trunk/src_plugins/draw_csect/draw_csect.c
===================================================================
--- trunk/src_plugins/draw_csect/draw_csect.c	(revision 28066)
+++ trunk/src_plugins/draw_csect/draw_csect.c	(revision 28067)
@@ -859,7 +859,7 @@
 		case PCB_HID_MOUSE_POPUP:
 			lid = get_layer_coords(x, y);
 			if (lid >= 0) {
-				pcb_layervis_change_group_vis(lid, 1, 1);
+				pcb_layervis_change_group_vis(&PCB->hidlib, lid, 1, 1);
 				pcb_actionva(&PCB->hidlib, "Popup", "layer", NULL);
 			}
 			else if ((x > 0) && (x < PCB_MM_TO_COORD(GROUP_WIDTH_MM))) {
Index: trunk/src_plugins/lib_hid_pcbui/act.c
===================================================================
--- trunk/src_plugins/lib_hid_pcbui/act.c	(revision 28066)
+++ trunk/src_plugins/lib_hid_pcbui/act.c	(revision 28067)
@@ -286,7 +286,7 @@
 				lyt = (pcb_layer_flags_(CURRENT) & PCB_LYT_ANYTHING) | (!conf_core.editor.show_solder_side ?  PCB_LYT_BOTTOM : PCB_LYT_TOP);
 				lid = pcb_layer_vis_last_lyt(lyt);
 				if (lid >= 0)
-					pcb_layervis_change_group_vis(lid, 1, 1);
+					pcb_layervis_change_group_vis(&PCB->hidlib, lid, 1, 1);
 		}
 	}
 
@@ -296,9 +296,9 @@
 		pcb_bool new_solder_vis = conf_core.editor.show_solder_side;
 
 		if (comp_group >= 0)
-			pcb_layervis_change_group_vis(PCB->LayerGroups.grp[comp_group].lid[0], !new_solder_vis, !new_solder_vis);
+			pcb_layervis_change_group_vis(&PCB->hidlib, PCB->LayerGroups.grp[comp_group].lid[0], !new_solder_vis, !new_solder_vis);
 		if (solder_group >= 0)
-			pcb_layervis_change_group_vis(PCB->LayerGroups.grp[solder_group].lid[0], new_solder_vis, new_solder_vis);
+			pcb_layervis_change_group_vis(&PCB->hidlib, PCB->LayerGroups.grp[solder_group].lid[0], new_solder_vis, new_solder_vis);
 	}
 
 	pcb_draw_inhibit_dec();
Index: trunk/src_plugins/lib_hid_pcbui/layersel.c
===================================================================
--- trunk/src_plugins/lib_hid_pcbui/layersel.c	(revision 28066)
+++ trunk/src_plugins/lib_hid_pcbui/layersel.c	(revision 28067)
@@ -263,7 +263,7 @@
 	if (lys->ly != NULL) {
 		if (lys->grp_vis) {
 			pcb_layer_id_t lid = lys->ly - PCB->Data->Layer;
-			pcb_layervis_change_group_vis(lid, 1, 1);
+			pcb_layervis_change_group_vis(&PCB->hidlib, lid, 1, 1);
 		}
 		else {
 			vis = &lys->ly->meta.real.vis;
@@ -383,7 +383,7 @@
 
 	change_selection:;
 	lid = pcb_layer_id(PCB->Data, l);
-	pcb_layervis_change_group_vis(lid, 1, 1);
+	pcb_layervis_change_group_vis(&PCB->hidlib, lid, 1, 1);
 
 	lys = lys_get(ls, &ls->real_layer, lid, 0);
 	if (lys != 0)
@@ -407,7 +407,7 @@
 
 	if (lys->grp_vis) {
 		pcb_layer_id_t lid = lys->ly - PCB->Data->Layer;
-		pcb_layervis_change_group_vis(lid, !*vis, 1);
+		pcb_layervis_change_group_vis(&PCB->hidlib, lid, !*vis, 1);
 	}
 	else {
 		*vis = !(*vis);