diff -urN cui69/cui_test.c cui70/cui_test.c
--- cui69/cui_test.c	Sun Feb  9 00:00:00 2014
+++ cui70/cui_test.c	Sun Feb  9 22:00:00 2014
@@ -80,7 +80,11 @@
 {
 	static char buf[16];
 
+	cui_hide(obj);
+	cui_draw(obj->parent);
 	cui_y_set(obj, obj->y + 1);
+	cui_show(obj);
+	
 	sprintf(buf, "%d", cui_gy(obj));
 	cui_label_str_set((cui)prm, buf);
 	return TRUE;
diff -urN cui69/scbar.c cui70/scbar.c
--- cui69/scbar.c	Sun Feb  9 00:00:00 2014
+++ cui70/scbar.c	Sun Feb  9 22:00:00 2014
@@ -37,8 +37,7 @@
 {
 	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 p->v * (pos_max +1) * 100 / (p->max_v*100 + add100);
+	return p->v * (pos_max + 1) / (p->max_v + 1);
 }
 
 int
@@ -46,8 +45,7 @@
 {
 	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);
+	return pos * p->max_v / pos_max;
 }
 
 void