diff -urN cui64/scbar.c cui65/scbar.c
--- cui64/scbar.c	Fri Feb  7 22:00:00 2014
+++ cui65/scbar.c	Sat Feb  8 22:00:00 2014
@@ -1,5 +1,6 @@
 #include "scbar.h"
 #include "handler.h"
+#include "key.h"
 #include <stdio.h>
 
 cui
@@ -26,11 +27,27 @@
 }
 
 int
+cui_scbar_thumb_pos_max(cui obj)
+{
+	return cui_scbar_pg_len(obj) - (2 + cui_scbar_thumb_len(obj));
+}
+
+int
 cui_scbar_thumb_pos(cui obj)
 {
 	cui_scbar p = (cui_scbar)obj;
-	int len = cui_scbar_pg_len(obj) - (2 + cui_scbar_thumb_len(obj));
-	return len * p->v / p->max_v;
+	int pos_max = cui_scbar_thumb_pos_max(obj);
+	int add100 = 100 * p->max_v * (pos_max + 1) / pos_max - 100 * p->max_v;
+	return p->v * (pos_max +1) * 100 / (p->max_v*100 + add100);
+}
+
+int
+cui_scbar_thumb_pos_to_val(cui obj, int pos)
+{
+	cui_scbar p = (cui_scbar)obj;
+	int pos_max = cui_scbar_thumb_pos_max(obj);
+	int add100 = 100 * p->max_v * (pos_max + 1) / pos_max - 100 * p->max_v;
+	return (pos * (p->max_v*100 + add100) * 2 + (p->max_v*100 + add100)) / ((pos_max + 1) * 100 * 2);
 }
 
 void
@@ -60,12 +77,16 @@
 		p->inc_pg = cui_fillbtn_new(obj, 0, cui_y2(p->thumb), 1, obj->h-1 - cui_y2(p->thumb), "|");
 		p->inc = cui_fillbtn_new(obj, 0, cui_y2(p->inc_pg), 1, 1, "-");
 	}
+	p->thumb_drag = FALSE;
+
 	cui_bind(p->dec, CUI_EVT_BUTTON, cui_scbar_btn_hdr, obj);
 	cui_bind(p->dec_pg, CUI_EVT_BUTTON, cui_scbar_btn_hdr, obj);
 	cui_bind(p->thumb, CUI_EVT_BUTTON, cui_scbar_btn_hdr, obj);
 	cui_bind(p->inc_pg, CUI_EVT_BUTTON, cui_scbar_btn_hdr, obj);
 	cui_bind(p->inc, CUI_EVT_BUTTON, cui_scbar_btn_hdr, obj);
 
+	cui_bind(p->thumb, CUI_EVT_KEY, cui_scbar_thumb_hdr, obj);
+
 	cui_bind(obj, CUI_EVT_DRAW, cui_scbar_hdr, NULL);
 }
 
@@ -102,8 +123,71 @@
 			cui_handler_call(obj, CUI_EVT_BUTTON, p->v);
 		}
 	}else{ /* fb == p->thumb */
+		if(0 <= val && val <= p->max_v){
+			p->v = val;
+			cui_draw(obj);
+			cui_handler_call(obj, CUI_EVT_BUTTON, p->v);
+		}
+	}
+	return TRUE;
+}
+
+int
+cui_scbar_thumb_hdr(cui fb, int evt, int val, void *prm)
+{
+	cui obj = (cui)prm;
+	cui_scbar p = (cui_scbar)obj;
+	cui_fillbtn fillbtn = (cui_fillbtn)fb;
+	int pos, pos_max;
+
+	/* evt == CUI_EVT_KEY */
 
+	if(!p->thumb_drag){
+		if(val != CUI_KEY_ENTER) return FALSE;
+		p->thumb_drag = TRUE;
+		p->bak = p->v;
+		fillbtn->v = TRUE;
+		cui_draw(obj);
+		return TRUE;
 	}
+
+	/* p->thumb_drag */
+
+	pos_max = cui_scbar_thumb_pos_max(obj);
+
+	switch(val){
+	case CUI_KEY_ESC:
+		if(p->v != p->bak) cui_handler_call(fb, CUI_EVT_BUTTON, p->bak);
+	case CUI_KEY_ENTER:
+		p->thumb_drag = FALSE;
+		fillbtn->v = FALSE;
+		cui_draw(obj);
+		break;
+	case CUI_KEY_UP:
+		if(p->hv == CUI_SCBAR_V){
+			pos = fb->y - 1;
+			if(pos > 0) cui_handler_call(fb, CUI_EVT_BUTTON, cui_scbar_thumb_pos_to_val(obj, pos-1));
+		}
+		break;
+	case CUI_KEY_DOWN:
+		if(p->hv == CUI_SCBAR_V){
+			pos = fb->y - 1;
+			if(pos < pos_max) cui_handler_call(fb, CUI_EVT_BUTTON, cui_scbar_thumb_pos_to_val(obj, pos+1));
+		}
+		break;
+	case CUI_KEY_LEFT:
+		if(p->hv == CUI_SCBAR_H){
+			pos = fb->x - 1;
+			if(pos > 0) cui_handler_call(fb, CUI_EVT_BUTTON, cui_scbar_thumb_pos_to_val(obj, pos-1));
+		}
+		break;
+	case CUI_KEY_RIGHT:
+		if(p->hv == CUI_SCBAR_H){
+			pos = fb->x - 1;
+			if(pos < pos_max) cui_handler_call(fb, CUI_EVT_BUTTON, cui_scbar_thumb_pos_to_val(obj, pos+1));
+		}
+		break;
+	}	
 	return TRUE;
 }
 
diff -urN cui64/scbar.h cui65/scbar.h
--- cui64/scbar.h	Mon Feb  3 01:00:00 2014
+++ cui65/scbar.h	Sat Feb  8 22:00:00 2014
@@ -11,11 +11,14 @@
 	int hv; /* CUI_SCBAR_H or CUI_SCBAR_V */
 	int max_v, v;
 	cui dec, dec_pg, thumb, inc_pg, inc;
+	int thumb_drag;
+	int bak;
 } *cui_scbar;
 
 cui cui_scbar_new(cui parent, int x, int y, int w, int h, int max_v, int v);
 void cui_scbar_init(cui obj, cui parent, int x, int y, int w, int h, int max_v, int v);
 int cui_scbar_btn_hdr(cui fb, int evt, int val, void *prm);
+int cui_scbar_thumb_hdr(cui fb, int evt, int val, void *prm);
 int cui_scbar_hdr(cui obj, int evt, int val, void *prm);
 int cui_scbar_val_get(cui obj);
 void cui_scbar_val_set(cui obj, int v);