diff -urN cui42/Makefile cui43/Makefile
--- cui42/Makefile	2014-01-31 01:10:00.000000000 +0900
+++ cui43/Makefile	2014-01-31 02:30:00.000000000 +0900
@@ -1,7 +1,7 @@
 CC = gcc -Wall
 
 TARG = cui_test
-OBJS = cui.o focus.o dialog.o button.o fill.o label.o panel.o handler.o esc.o key.o rect.o
+OBJS = cui.o focus.o dialog.o ckbox.o button.o fill.o label.o panel.o handler.o esc.o key.o rect.o
 
 all: $(TARG)
 
diff -urN cui42/ckbox.c cui43/ckbox.c
--- cui42/ckbox.c	1970-01-01 09:00:00.000000000 +0900
+++ cui43/ckbox.c	2014-01-31 02:30:00.000000000 +0900
@@ -0,0 +1,68 @@
+#include "ckbox.h"
+#include "key.h"
+#include "handler.h"
+#include <stdio.h>
+#include <string.h>
+
+cui
+cui_ckbox_new(cui parent, int x, int y, char *s, int v)
+{
+	cui obj = cui_alloc(sizeof(struct cui_ckbox));
+	cui_ckbox_init(obj, parent, x, y, s, v);
+	return obj;
+}
+
+int
+cui_ckbox_hdr(cui obj, int evt, int val, void *prm)
+{
+	cui_ckbox p = (cui_ckbox)obj;
+	int attr;
+
+	if(evt == CUI_EVT_KEY){
+		if(val == CUI_KEY_ENTER){
+			p->v = !p->v;
+			cui_label_str_set(p->lb1, p->v ? "[X] " : "[ ] ");
+			cui_draw(obj);
+			cui_handler_call(obj, obj->handler_list, CUI_EVT_BUTTON, p->v);
+			return TRUE;
+		}
+		return FALSE;
+	}
+
+	/* CUI_EVT_DRAW */
+	
+	attr = (val == CUI_DRAW_FOCUS) ? CUI_ATTR_ULINE : CUI_ATTR_NORMAL;
+	cui_label_attr_set(p->lb1, attr);
+	cui_label_attr_set(p->lb2, attr);
+	return TRUE;
+}
+
+void
+cui_ckbox_init(cui obj, cui parent, int x, int y, char *s, int v)
+{
+	cui_ckbox p = (cui_ckbox)obj;
+	cui_base_init(obj, parent, x, y, 0, 1);
+	p->lb1 = cui_label_new(obj, 0, 0, "[ ] ");
+	p->lb2 = cui_label_new(obj, 4, 0, s);
+	obj->w = p->lb2->x + p->lb2->w;
+	obj->flags |= CUI_FLG_CAN_FOCUS;
+	cui_bind(obj, CUI_EVT_DRAW | CUI_EVT_KEY, cui_ckbox_hdr, NULL);
+	p->v = v;
+}
+
+char *
+cui_ckbox_str_get(cui obj)
+{
+	cui_ckbox p = (cui_ckbox)obj;
+	return cui_label_str_get(p->lb2);
+}
+
+void
+cui_ckbox_str_set(cui obj, char *s)
+{
+	cui_ckbox p = (cui_ckbox)obj;
+	cui_label_str_set(p->lb2, s);
+	cui_w_set(obj, p->lb2->x + p->lb2->w);
+}
+
+/* EOF */
diff -urN cui42/ckbox.h cui43/ckbox.h
--- cui42/ckbox.h	1970-01-01 09:00:00.000000000 +0900
+++ cui43/ckbox.h	2014-01-31 02:30:00.000000000 +0900
@@ -0,0 +1,19 @@
+#ifndef __CKBOX_H__
+#define __CKBOX_H__
+
+#include "label.h"
+
+typedef struct cui_ckbox{
+	struct cui_base base;
+	cui lb1, lb2;
+	int v;
+} *cui_ckbox;
+
+cui cui_ckbox_new(cui parent, int x, int y, char *s, int v);
+void cui_ckbox_init(cui obj, cui parent, int x, int y, char *s, int v);
+char *cui_ckbox_str_get(cui obj);
+void cui_ckbox_str_set(cui obj, char *s);
+
+
+#endif
+
diff -urN cui42/cui_test.c cui43/cui_test.c
--- cui42/cui_test.c	2014-01-31 02:20:00.000000000 +0900
+++ cui43/cui_test.c	2014-01-31 02:30:00.000000000 +0900
@@ -5,6 +5,7 @@
 #include "handler.h"
 #include "label.h"
 #include "button.h"
+#include "ckbox.h"
 #include "dialog.h"
 
 int
@@ -61,9 +62,8 @@
 my_hdr2(cui obj, int evt, int val, void *prm)
 {
 	cui dlg = (cui)prm;
-	if(cui_is_visible(dlg)) cui_hide(dlg);
-	else cui_show(dlg);
-	cui_button_str_set(obj, cui_is_visible(dlg) ? "Hide Dialog" : "Show Dialog");
+	if(val) cui_show(dlg);
+	else cui_hide(dlg);
 	return TRUE;
 }
 
@@ -130,8 +130,8 @@
 main()
 {
 	cui base = cui_panel_new(NULL, 0, 0, 40, 20);
-	cui btn = cui_button_new(base, 2, 1, "Show Dialog");
-	cui mv_btn = cui_button_new(base, btn->x + btn->w + 2, btn->y, "move");
+	cui ck = cui_ckbox_new(base, 2, 1, "Show", FALSE);
+	cui mv_btn = cui_button_new(base, ck->x + ck->w + 2, ck->y, "move");
 	cui mv_lb = cui_label_new(base, mv_btn->x + mv_btn->w + 2, mv_btn->y, "");
 
 	cui_simple_dialog p;
@@ -142,7 +142,7 @@
 	arrow_new(base, mv_lb->x + mv_lb->w + 2, mv_lb->y, big);
 
 	small->flags |= CUI_FLG_HIDE;
-	cui_bind(btn, CUI_EVT_BUTTON, my_hdr2, small);
+	cui_bind(ck, CUI_EVT_BUTTON, my_hdr2, small);
 	cui_bind(mv_btn, CUI_EVT_BUTTON, mv_hdr, mv_lb);
 
 	cui_main(base, NULL);