diff --git a/14_day/bootpack.c b/14_day/bootpack.c
index f17a866..4b3e280 100644
--- a/14_day/bootpack.c
+++ b/14_day/bootpack.c
@@ -143,6 +143,9 @@ void HariMain(void)
 					sprintf(s, "(%3d, %3d)", mx, my);
 					putfonts8_asc_sht(sht_back, 0, 0, COL8_FFFFFF, COL8_008484, s, 10);
 					sheet_slide(sht_mouse, mx, my);/* 包含sheet_refresh含sheet_refresh */
+					if ((mdec.btn & 0x01) != 0) { /* 按下左键、移动sht_win */
+						sheet_slide(sht_win, mx - 80, my - 8);
+					}
 				}
 			} else if (i == 10) { /* 10秒定时器 */
 				putfonts8_asc_sht(sht_back, 0, 64, COL8_FFFFFF, COL8_008484, "10[sec]", 7);