自定义单元格问题

一个单元格中能加载自定义控件么？有谁用过，看到存在customType类型，不知道怎么用

1. class myCkBox : FarPoint.Win.Spread.CellType.CheckBoxCellType
   
2. {
   
3. CheckBox ckbx = new CheckBox();
   
4. 
   
5. public myCkBox()
   
6. {
   
7. }
   
8. new event EventHandler EditingCanceled;
   
9. new event EventHandler EditingStopped;
   
10. 
    
11. public override void StartEditing(EventArgs e, bool selectAll, bool autoClipboard)
    
12. {
    
13.    return;
    
14. }
    
15. public override void CancelEditing()
    
16. {
    
17.    EditingCanceled(ckbx, EventArgs.Empty);
    
18.    base.FireEditingCanceled();
    
19. }
    
20. public override bool StopEditing()
    
21. {
    
22.    if (EditingStopped != null)
    
23.    {
    
24.       EditingStopped(ckbx, EventArgs.Empty);
    
25.       base.FireEditingStopped();
    
26.       return true;
    
27.    }
    
28.    else
    
29.    {
    
30.       return false;
    
31.    }
    
32. }
    
33. 
    
34. public override bool IsReservedKey(KeyEventArgs e)
    
35. {
    
36.    return base.IsReservedKey(e);
    
37. }
    
38. public override object IsReservedLocation(Graphics g, int x, int y, Rectangle r, FarPoint.Win.Spread.Appearance appr, object
    
39. value, float zoom)
    
40. {
    
41.    return base.IsReservedLocation(g, x, y, r, appr, value, zoom);
    
42. }
    
43. public override Size GetPreferredSize(Graphics g, Size size, FarPoint.Win.Spread.Appearance appr, object value, float zoom)
    
44. {
    
45.    return base.GetPreferredSize(g, size, appr, value, zoom);
    
46. }
    
47. public override object Parse(string s)
    
48. {
    
49.    return base.Parse(s);
    
50. }
    
51. public override string Format(object o)
    
52. {
    
53.    return base.Format(o.ToString());
    
54. }
    
55. public override Control GetEditorControl(FarPoint.Win.Spread.Appearance appearance, float zoomFactor)
    
56. {
    
57.    return ckbx;
    
58. }
    
59. public override object GetEditorValue()
    
60. {
    
61.    return ckbx.CheckState;
    
62. }
    
63. public override void PaintCell(Graphics g, Rectangle r, FarPoint.Win.Spread.Appearance appr, object value, bool issel, bool
    
64. islocked, float zoom)
    
65. {
    
66.    GetEditorValue();
    
67.    if (ckbx.CheckState == CheckState.Checked)
    
68.    {
    
69.       ControlPaint.DrawCheckBox(g, r.X, r.Y, r.Width - 40, r.Height - 6, ButtonState.Checked);
    
70.    }
    
71.    else if (ckbx.CheckState == CheckState.Unchecked)
    
72.    {
    
73.      ControlPaint.DrawCheckBox(g, r.X, r.Y, r.Width - 40, r.Height - 6, ButtonState.Normal);
    
74.    }
    
75. }
    
76. public override void SetEditorValue(object value)
    
77. {
    
78.    ckbx.CheckState = CheckState.Checked;
    
79. }
    
80. public override Cursor GetReservedCursor(object o)
    
81. {
    
82.    return base.GetReservedCursor(o);
    
83. }
    
84. }
    
85. 
    
86. private void menuItem4_Click(object sender, System.EventArgs e)
    
87. {
    
88.    myCkBox ckbx = new myCkBox();
    
89.    fpSpread1.ActiveSheet.Cells[0, 0].CellType = ckbx;
    
90. }

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