ZoomPrevious Method （ActiveX）

签名

工 务 局：

object.ZoomPrevious

对象

类型：应用

此方法适用的对象。

返回值（RetVal）

无返回值。

言论

此方法仅适用于当前活动视口（图纸空间视口或模型空间视口）。

此方法缩放以显示上一个视图。您最多可以恢复 10 个以前的视图。

例子

工 务 局：

Sub Example_ZoomAll()
    ' This example creates several objects in model space and
    ' then performs a variety of zooms on the drawing.

    AppActivate ThisDrawing.Application.Caption

    ' Create a Ray object in model space
    Dim rayObj As AcadRay
    Dim basePoint(0 To 2) As Double
    Dim SecondPoint(0 To 2) As Double
    basePoint(0) = 3#: basePoint(1) = 3#: basePoint(2) = 0#
    SecondPoint(0) = 1#: SecondPoint(1) = 3#: SecondPoint(2) = 0#
    Set rayObj = ThisDrawing.ModelSpace.AddRay(basePoint, SecondPoint)
    
    ' Create a polyline object in model space
    Dim plineObj As AcadLWPolyline
    Dim points(0 To 5) As Double
    points(0) = 3: points(1) = 7
    points(2) = 9: points(3) = 2
    points(4) = 3: points(5) = 5
    Set plineObj = ThisDrawing.ModelSpace.AddLightWeightPolyline(points)
    plineObj.Closed = True

    ' Create a line object in model space
    Dim lineObj As AcadLine
    Dim startPoint(0 To 2) As Double
    Dim endPoint(0 To 2) As Double
    startPoint(0) = 0: startPoint(1) = 0: startPoint(2) = 0
    endPoint(0) = 2: endPoint(1) = 2: endPoint(2) = 0
    Set lineObj = ThisDrawing.ModelSpace.AddLine(startPoint, endPoint)
    
    ' Create a circle object in model space
    Dim circObj As AcadCircle
    Dim centerPt(0 To 2) As Double
    Dim radius As Double
    centerPt(0) = 20: centerPt(1) = 30: centerPt(2) = 0
    radius = 3
    Set circObj = ThisDrawing.ModelSpace.AddCircle(centerPt, radius)

    ' Create an ellipse object in model space
    Dim ellObj As AcadEllipse
    Dim majAxis(0 To 2) As Double
    Dim center(0 To 2) As Double
    Dim radRatio As Double
    center(0) = 5#: center(1) = 5#: center(2) = 0#
    majAxis(0) = 10: majAxis(1) = 20#: majAxis(2) = 0#
    radRatio = 0.3
    Set ellObj = ThisDrawing.ModelSpace.AddEllipse(center, majAxis, radRatio)

' ZoomAll
    MsgBox "Perform a ZoomAll", , "ZoomWindow Example"
    ZoomAll
    
' ZoomWindow
    MsgBox "Perform a ZoomWindow using the following coordinates:" & vbCrLf & _
           "1.3, 7.8, 0" & vbCrLf & _
           "13.7, -2.6, 0", , "ZoomWindow Example"
           
    Dim point1(0 To 2) As Double
    Dim point2(0 To 2) As Double
    point1(0) = 1.3: point1(1) = 7.8: point1(2) = 0
    point2(0) = 13.7: point2(1) = -2.6: point2(2) = 0
    ZoomWindow point1, point2
    
' ZoomScaled
    MsgBox "Perform a ZoomScaled using:" & vbCrLf & _
           "Scale Type: acZoomScaledRelative" & vbCrLf & _
           "Scale Factor: 2", , "ZoomWindow Example"
    Dim scalefactor As Double
    Dim scaletype As Integer
    scalefactor = 2
    scaletype = acZoomScaledRelative
    ZoomScaled scalefactor, scaletype
    
' ZoomExtents
    MsgBox "Perform a ZoomExtents", , "ZoomWindow Example"
    ZoomExtents
    
' ZoomPickWindow
    MsgBox "Perform a ZoomPickWindow", , "ZoomWindow Example"
    ZoomPickWindow
    
' ZoomCenter
    MsgBox "Perform a ZoomCenter using:" & vbCrLf & _
           "Center 3, 3, 0" & vbCrLf & _
           "Magnification: 10", , "ZoomWindow Example"
    Dim zcenter(0 To 2) As Double
    Dim magnification As Double
    zcenter(0) = 3: zcenter(1) = 3: zcenter(2) = 0
    magnification = 10
    zoomcenter zcenter, magnification
   
End Sub

Visual LISP:

(vl-load-com)
(defun c:Example_ZoomAll()
    ;; This example creates several objects in model space and
    ;; then performs a variety of zooms on the drawing.
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
    (setq modelSpace (vla-get-ModelSpace doc))

    ;; Create a Ray object in model space
    (setq basePoint (vlax-3d-point 3 3 0)
          secondPoint (vlax-3d-point 1 3 0))
    (setq rayObj (vla-AddRay modelSpace basePoint secondPoint))
    
    ;; Create a polyline object in model space
    (setq points (vlax-make-safearray vlax-vbDouble '(0 . 5)))
    (vlax-safearray-fill points '(3 7
                                  9 2
                                  3 5
                                 )
    )
    (setq plineObj (vla-AddLightWeightPolyline modelSpace points))
    (vla-put-Closed plineObj :vlax-true)

    ;; Create a line object in model space
    (setq startPoint (vlax-3d-point 0 0 0)
          endPoint (vlax-3d-point 2 2 0))
    (setq lineObj (vla-AddLine modelSpace startPoint endPoint))
    
    ;; Create a circle object in model space
    (setq centerPt (vlax-3d-point 20 30 0)
          radius 3)
    (setq circObj (vla-AddCircle modelSpace centerPt radius))

    ;; Create an ellipse object in model space
    (setq center (vlax-3d-point 5 5 0)
          majAxis (vlax-3d-point 10 20 0)
          radRatio 0.3)
    (setq ellObj (vla-AddEllipse modelSpace center majAxis radRatio))

;; ZoomAll
    (alert "Perform a ZoomAll")
    (vla-ZoomAll acadObj)
    
;; ZoomWindow
    (alert (Strcat "Perform a ZoomWindow using the following coordinates:"
                   "\n1.3, 7.8, 0"
                   "\n13.7, -2.6, 0"))

    (setq point1 (vlax-3d-point 1.3 7.8 0)
          point2 (vlax-3d-point 13.7 -2.6 0))
    (vla-ZoomWindow acadObj point1 point2)
    
;; ZoomScaled
    (alert (strcat "Perform a ZoomScaled using:"
                   "\nScale Type: acZoomScaledRelative"
                   "\nScale Factor: 2"))
    (setq scalefactor 2
          scaletype acZoomScaledRelative)
    (vla-ZoomScaled acadObj scalefactor scaletype)
    
;; ZoomExtents
    (alert "Perform a ZoomExtents")
    (vla-ZoomExtents acadObj)
    
;; ZoomPickWindow
    (alert "Perform a ZoomPickWindow")
    (vla-ZoomPickWindow acadObj)

;; ZoomPrevious
    (alert "Perform a ZoomPrevious")
    (vla-ZoomPrevious acadObj)

;; ZoomCenter
    (alert (strcat "Perform a ZoomCenter using:"
                   "\nCenter 3, 3, 0"
                   "\nMagnification: 10"))

    (setq zcenter (vlax-3d-point 3 3 0)
          magnification 10)
    (vla-ZoomCenter acadObj zcenter magnification)
)