EndUndoMark Method （ActiveX）

签名

工 务 局：

object.EndUndoMark

对象

类型：文档

此方法适用的对象。

返回值（RetVal）

无返回值。

言论

此方法允许 AutoCAD 关闭环境，以便将操作从 toto 视为一组操作。StartUndoMarkEndUndoMark

例子

工 务 局：

Sub Example_EndUndoMark()
    ' This example creates a series of lines, each one with an undo marker
    ' defined for it. After lines are created you can switch to AutoCAD and type
    ' the Undo command, and only one line at a time will be undone. If StartUndoMark
    ' call is not made, an undo in AutoCAD will undo all the lines at once.
    
    Dim line As AcadLine
    Dim stPnt(0 To 2) As Double
    Dim endPnt(0 To 2) As Double
    stPnt(0) = 1: stPnt(1) = 2: stPnt(2) = 0
    endPnt(0) = 2: stPnt(1) = 1: stPnt(2) = 0
    
    ' Create the lines
    Dim j As Integer
    For j = 0 To 3
        ThisDrawing.StartUndoMark
        Set line = ThisDrawing.ModelSpace.AddLine(stPnt, endPnt)
        stPnt(0) = stPnt(0) + 3
        endPnt(0) = endPnt(0) + 3
        ThisDrawing.EndUndoMark
    Next
    ZoomAll
    
End Sub

Visual LISP：

(vl-load-com)
(defun c:Example_EndUndoMark()
    ;; This example creates a series of lines, each one with an undo marker
    ;; defined for it. After lines are created you can switch to AutoCAD and type
    ;; the Undo command, and only one line at a time will be undone. If StartUndoMark
    ;; call is not made, an undo in AutoCAD will undo all the lines at once.
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
    (setq modelSpace (vla-get-ModelSpace doc))  

    (setq stPnt (vlax-3d-point 1 2 0)
          endPnt (vlax-3d-point 2 1 0))  

    ;; Create the lines
    (setq j 0)
    (while (>= 3 j)
        (vla-StartUndoMark doc)
        (setq line (vla-AddLine modelSpace stPnt endPnt))
        (vlax-safearray-put-element (vlax-variant-value stPnt) 0 (+ (vlax-safearray-get-element (vlax-variant-value stPnt) 0) 3))
        (vlax-safearray-put-element (vlax-variant-value endPnt) 0 (+ (vlax-safearray-get-element (vlax-variant-value endPnt) 0) 3))
        (setq j (1+ j))
        (vla-EndUndoMark doc)
    )
    (vla-ZoomAll acadObj)
)