diff -urN cui1/Makefile cui2/Makefile
--- cui1/Makefile	Thu Jan 30 03:00:00 2014
+++ cui2/Makefile	Thu Jan 30 03:20:00 2014
@@ -1,11 +1,14 @@
 CC = gcc -Wall
 
-TARG = key_test
+TARG = key_test esc_test
 
 all: $(TARG)
 
 key_test: key_test.o key.o
 	$(CC) -o $@ key_test.o key.o
+
+esc_test: esc_test.o esc.o
+	$(CC) -o $@ esc_test.o esc.o
 
 clean:
 	rm -f $(TARG) *.o *~
diff -urN cui1/esc.c cui2/esc.c
--- cui1/esc.c	Thu Jan  1 09:00:00 1970
+++ cui2/esc.c	Thu Jan 30 03:20:00 2014
@@ -0,0 +1,80 @@
+#include "esc.h"
+
+#include <stdio.h>
+
+void
+cui_esc(char *s)
+{
+	printf("\033[%s", s);
+	fflush(stdout);
+}
+
+void
+cui_esc_cls(void)
+{
+	cui_esc("2J");
+}
+
+void
+cui_esc_loc(int x, int y)
+{
+	char buf[16];
+
+	sprintf(buf, "%d;%dH", y+1, x+1);
+	cui_esc(buf);
+}
+
+void
+cui_esc_attr(int attr)
+{
+	char buf[16];
+
+	sprintf(buf, "%dm", attr);
+	cui_esc(buf);
+}
+
+void
+cui_esc_cursor_pos_save(void)
+{
+	cui_esc("s");
+}
+
+void
+cui_esc_cursor_pos_load(void)
+{
+	cui_esc("u");
+}
+
+void
+cui_esc_exopt(int n, int onoff)
+{
+	char buf[16];
+
+	sprintf(buf, "?%d%c", n, onoff ? 'h' : 'l');
+	cui_esc(buf);
+}
+
+void
+cui_esc_cursor(int onoff)
+{
+	cui_esc(onoff ? "?25h" : "?25l");
+}
+
+void
+cui_esc_enter(void)
+{
+	cui_esc_cursor_pos_save();
+	cui_esc_exopt(CUI_ESC_SCREEN_SAVE_LOAD, 1);
+	cui_esc_exopt(CUI_ESC_CURSOR_ONOFF, 0);
+}
+
+void
+cui_esc_exit(void)
+{
+	cui_esc_attr(CUI_ESC_NORMAL);
+	cui_esc_exopt(CUI_ESC_CURSOR_ONOFF, 1);
+	cui_esc_exopt(CUI_ESC_SCREEN_SAVE_LOAD, 0);
+	cui_esc_cursor_pos_load();
+}
+
+/* EOF */
diff -urN cui1/esc.h cui2/esc.h
--- cui1/esc.h	Thu Jan  1 09:00:00 1970
+++ cui2/esc.h	Thu Jan 30 03:20:00 2014
@@ -0,0 +1,26 @@
+#ifndef __ESC_H__
+#define __ESC_H__
+
+/* attr */
+#define CUI_ESC_NORMAL		0
+#define CUI_ESC_ULINE		4
+#define CUI_ESC_REVERSE		7
+#define CUI_ESC_ULINE_OFF	24
+#define CUI_ESC_REVERSE_OFF	27
+
+/* exopt */
+#define CUI_ESC_CURSOR_ONOFF		25
+#define CUI_ESC_SCREEN_SAVE_LOAD	47
+
+void cui_esc(char *s);
+void cui_esc_cls(void);
+void cui_esc_loc(int x, int y);
+void cui_esc_attr(int attr);
+void cui_esc_cursor_pos_save(void);
+void cui_esc_cursor_pos_load(void);
+void cui_esc_exopt(int n, int onoff);
+void cui_esc_cursor(int onoff);
+void cui_esc_enter(void);
+void cui_esc_exit(void);
+
+#endif
diff -urN cui1/esc_test.c cui2/esc_test.c
--- cui1/esc_test.c	Thu Jan  1 09:00:00 1970
+++ cui2/esc_test.c	Thu Jan 30 03:00:00 2014
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <unistd.h>
+#include "esc.h"
+
+int
+main()
+{
+	cui_esc_enter();
+
+	cui_esc_cls();
+
+	cui_esc_loc(20, 10);
+	printf("foo");
+
+	cui_esc_attr(CUI_ESC_ULINE);
+	cui_esc_loc(20, 11);
+	printf("bar");
+
+	cui_esc_attr(CUI_ESC_REVERSE);
+	cui_esc_loc(10, 12);
+	printf("hoge");		
+	fflush(stdout);
+
+	sleep(3);
+
+	cui_esc_exit();
+	return 0;
+}
+
+/* EOF */