diff -urN cui109/cui.c cui110/cui.c
--- cui109/cui.c	Sun Apr 13 22:00:00 2014
+++ cui110/cui.c	Mon Apr 14 00:00:00 2014
@@ -86,7 +86,8 @@
 srv_accept(cui obj)
 {
 	struct sockaddr_in caddr;
-	int clen = sizeof(caddr), cfd;
+	socklen_t clen = sizeof(caddr);
+	int cfd;
 
 	if(sfd == -1 || !cui_select_chk(sfd)) return;
 
diff -urN cui109/cui_test.c cui110/cui_test.c
--- cui109/cui_test.c	Sat Apr 12 23:00:00 2014
+++ cui110/cui_test.c	Mon Apr 14 00:00:00 2014
@@ -379,6 +379,31 @@
 }
 
 int
+tab_test_btn_hdr(cui obj, int evt, int val, void *prm)
+{
+	/* CUI_EVT_BUTTON */
+
+	cui bs = (cui)prm;
+	cui ck = cui_index_to_child(bs, 1);
+	cui tab_test = cui_index_to_child(bs, 2);
+
+	static int cnt = 0;
+	char buf[16];
+	cui parent = tab_test->parent;
+	int y = cui_y2(tab_test);
+	cui sheet = cui_base_new(parent, 0, y, 0, 0);
+
+	cui_hide(sheet);
+	cui_wh_set(sheet, parent->w, parent->h-y);
+
+	sprintf(buf, "%d", cnt++);
+	cui_label_new(sheet, 1, 1, strdup(buf));
+
+	cui_tab_add(tab_test, strdup(buf), sheet, cui_ckbox_val_get(ck));
+	return TRUE;
+}
+
+int
 main(int ac, char **av)
 {
 	int init_ret = cui_init(ac, av);
@@ -406,6 +431,10 @@
 	cui lb_num = cui_label_new(bs_num, 1, 13, "");
 	cui btn_num = cui_button_new(bs_num, 1, 15, "addr set");
 	cui num_arr[] = { num2, num_d2, mn_int1 };
+
+	cui bs_tab_test = cui_base_new(bs_view, 0, 1, bs_view->w, bs_view->h-1);
+	cui tab_test_btn = cui_button_new(bs_tab_test, 0, 1, "add");
+
 	cui base = cui_base_new(bs_view, 0, 1, 40, 20);
 	cui mn_btn = cui_menu_btn_new(base, 1, 1, "File");
 	cui etx = cui_etext_new(base, mn_btn->x, cui_y2(mn_btn), 8, "foo");
@@ -417,8 +446,8 @@
 	cui small = cui_scpanel_new(base, 2, 3, base->w - (2 * 2), base->h - (3 + 1), "title");
 	cui small2 = cui_scpanel_sheet_get(small);
 
-	cui tab_sheets[] = { base, bs_bar, sc_hoge, bs_term, bs_timer, bs_num };
-	cui tab = cui_tab_new(bs_view, 0, 0, -1, (char *[]){"foo", "bar", "hoge", "term", "timer", "num", NULL}, tab_sheets, 0);
+	cui tab_sheets[] = { base, bs_bar, sc_hoge, bs_term, bs_timer, bs_num, bs_tab_test };
+	cui tab = cui_tab_new(bs_view, 0, 0, -1, (char *[]){"foo", "bar", "hoge", "term", "timer", "num", "tab test", NULL}, tab_sheets, 0);
 	char lb_timer1_buf[16];
 
 	big_new(small2, 0, 0, &p);
@@ -465,6 +494,11 @@
 	cui_bind(mn_int1, CUI_EVT_BUTTON, mn_int_hdr, lb_num);
 	cui_bind(btn_num, CUI_EVT_BUTTON, btn_num_hdr, num_arr);
 	cui_wh_exp(bs_num);
+
+	cui_hide(bs_tab_test);
+	cui_ckbox_new(bs_tab_test, cui_x2(tab_test_btn)+2, tab_test_btn->y, "init_act", TRUE);
+	cui_tab_new(bs_tab_test, 0, cui_y2(tab_test_btn)+1, 0, NULL, NULL, 0);
+	cui_bind(tab_test_btn, CUI_EVT_BUTTON, tab_test_btn_hdr, bs_tab_test);
 
 	cui_wh_set(bs_view, cui_x2(tab), bs_view->h);
 	cui_wh_set(bs, cui_x2(bs_view)+1, cui_y2(bs_view)+1);
diff -urN cui109/tab.c cui110/tab.c
--- cui109/tab.c	Fri Apr 11 00:00:00 2014
+++ cui110/tab.c	Mon Apr 14 00:00:00 2014
@@ -1,5 +1,6 @@
 #include "tab.h"
 #include "handler.h"
+#include "key.h"
 #include <stdio.h>
 
 cui
@@ -95,10 +96,16 @@
 }
 
 void
-cui_tab_add(cui obj, char *s, cui sheet)
+cui_tab_add(cui obj, char *s, cui sheet, int v)
 {
-	cui btn = cui_tab_btn_new(obj, cui_x2(obj->children), 0, s, 0);
+	int first = !obj->children;
+	int x = first ? 0 : cui_x2(obj->children);
+	cui btn = cui_tab_btn_new(obj, x, 0, s, first);
 	cui_bind(btn, CUI_EVT_BUTTON, cui_tab_btn_hdr, sheet);
+	cui_wh_fit(obj);
+	cui_draw(obj);
+	if(first) cui_show(sheet);
+	else if(v) cui_handler_call(btn, CUI_EVT_KEY, CUI_KEY_ENTER);
 }
 
 /* EOF */
diff -urN cui109/tab.h cui110/tab.h
--- cui109/tab.h	Sun Feb  2 23:50:00 2014
+++ cui110/tab.h	Mon Apr 14 00:00:00 2014
@@ -20,6 +20,6 @@
 
 cui cui_tab_new(cui parent, int x, int y, int w, char **lst, cui *sheets, int v);
 void cui_tab_init(cui obj, cui parent, int x, int y, int w, char **lst, cui *sheets, int v);
-void cui_tab_add(cui obj, char *s, cui sheet);
+void cui_tab_add(cui obj, char *s, cui sheet, int v);
 
 #endif