http://rpg.blue/forum.php?mod=viewthread&tid=154918 这个是普遍的滚轮 但在我游戏中似乎不太好用
所以我一般都是 用鼠标直接控制上下移动（就是单击上下移动的那个小三角）在鼠标脚本中找
class Window_Selectable 把那一整段替换成如下内容

1. 
   
2. class Window_Selectable # BY水迭澜
   
3. if @self_alias == nil
   
4. alias self_update update
   
5. @self_alias = true
   
6. end
   
7. def update
   
8. #self.cursor_rect.empty
   
9. self_update
   
10. if self.active and @item_max > 0
    
11. index_var = @index
    
12. tp_index = @index
    
13. mouse_x, mouse_y = Mouse.get_mouse_pos
    
14. mouse_not_in_rect = true
    
15. for i in 0...@item_max
    
16. @index = i
    
17. update_cursor_rect
    
18. top_x = self.cursor_rect.x + self.x + 16
    
19. top_y = self.cursor_rect.y + self.y + 16
    
20. bottom_x = top_x + self.cursor_rect.width
    
21. bottom_y = top_y + self.cursor_rect.height
    
22. if (mouse_x > top_x) and (mouse_y > top_y) and
    
23. (mouse_x < bottom_x) and (mouse_y < bottom_y)
    
24. mouse_not_in_rect = false
    
25. if tp_index != @index
    
26. tp_index = @index
    
27. $game_system.se_play($data_system.cursor_se)
    
28. end
    
29. break
    
30. end
    
31. end
    
32. if mouse_not_in_rect
    
33. # row = @index / @column_max
    
34. # 当前行被显示开头行前面的情况下
    
35. if self.top_row < row_max-page_row_max and Mouse.press?(Mouse::LEFT) and mouse_y>self.y+self.height/2
    
36. self.top_row +=1
    
37. end
    
38. # 当前行被显示末尾行之后的情况下
    
39. if self.top_row > 0 and Mouse.press?(Mouse::LEFT) and mouse_y<=self.y+self.height/2#self.top_row + (self.page_row_max - 1)
    
40. # 从当前行向末尾滚动
    
41. self.top_row -=1
    
42. end
    
43. @index = index_var
    
44. if self.is_a?(Window_Target)
    
45. @index=-3
    
46. end
    
47. update_cursor_rect
    
48. Mouse.click_lock
    
49. else
    
50. Mouse.click_unlock
    
51. end
    
52. end
    
53. end
    
54. def update_cursor_rect
    
55. # 光标位置不满 0 的情况下
    
56. if @index < 0
    
57. self.cursor_rect.empty
    
58. return
    
59. end
    
60. # 获取当前的行
    
61. row = @index / @column_max
    
62. # 当前行被显示开头行前面的情况下
    
63. if row < self.top_row
    
64. # 从当前行向开头行滚动
    
65. self.cursor_rect.empty
    
66. return
    
67. end
    
68. # 当前行被显示末尾行之后的情况下
    
69. if row > self.top_row + (self.page_row_max - 1)
    
70. # 从当前行向末尾滚动
    
71. self.cursor_rect.empty
    
72. return
    
73. end
    
74. # 计算光标的宽
    
75. cursor_width = self.width / @column_max - 32
    
76. # 计算光标坐标
    
77. x = @index % @column_max * (cursor_width + 32)
    
78. y = @index / @column_max * 32 - self.oy
    
79. # 更新光标矩形
    
80. self.cursor_rect.set(x, y, cursor_width, 32)
    
81. end
    
82. end

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