我们经常见的编辑菜单中"撤消"与"恢复"是如何工作的?

<P>如题所说.小弟现在做一个鼠标操作的东东.要实现撤消与恢复.不知从何下手.望各位高人给个思路.对象是C#与MO2.3下的加点,移点或删点等操作.谢谢!</P>

<P>没用c#做过，vb倒是做过这个</P>

版主,VB下你是如何做的?能说一下你的思路吗?多谢!

帮顶

ARRAY数组

ARRAY数组 ?,具体思路可以说一下吗?楼上的高人!

array数据的方法的确是可以，由于最近没用mo，也没装vb，改天贴上代码

<P>谢谢GIS!</P>

多谢!急等!

<P>程序很多，点线面的redo和undo都要写，这里贴上两个函数看看先</P><P>'添加线
Function UAddLine(map As MapObjects2.map, layerNum As Long, Line As MapObjects2.Line)
On Error GoTo exit1
Dim lineNew As New MapObjects2.Line</P><P> Set m_map = map
 
 Dim recs As MapObjects2.Recordset
 Set recs = map.Layers(layerNum).Records
 CopyLine lineNew, Line
 
 pushTypeAStep utAddLine
 pushInt layerNum
 pushObject lineNew
 pushEnd
 
 recs.Edit
 recs.AddNew
 Set recs.Fields("Shape").Value = lineNew
 
 recs.Update
 recs.StopEditing
 
 
 Refresh map
Set lineNew = Nothing
exit1:
End Function</P><P>Private Function URAddLine(map As MapObjects2.map) 'redo
On Error GoTo exit1
Dim typea, layerNum As Long</P><P>Dim Line As MapObjects2.Line</P><P> typea = pipType
 layerNum = pipInt
Set Line = pipObject
 pipEnd</P><P>Dim recs As MapObjects2.Recordset
Set recs = map.Layers(layerNum).Records
 recs.Edit
 recs.AddNew
 Set recs.Fields("Shape").Value = Line
 recs.Update
 recs.StopEditing
 Refresh map
exit1:
End Function</P>