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SetXData 方法（ActiveX）

2024-5-31 20:43| 发布者: admin| 查看: 112| 评论: 0|原作者: admin|来自: AutoCAD

设置与对象关联的扩展数据（XData）。

支持的平台：仅限 Windows

签名

VBA：

object.SetXData XDataType, XDataValue

对象

类型：所有图形对象、AttributeReference、Block、Dictionary、Dimension、DimStyle、Group、Layer、Layout、Linetype、Material、MLeaderStyle、PlotConfiguration、RegisteredApplication、TableStyle、TextStyle、UCS、View、Viewport、XRecord的

此方法应用到的对象。

XData类型

访问：仅输入

类型：变体（短数组）

短整数值的数组，表示扩展数据（XData）中每个值的 DXF 组代码值。

XDataValue

访问：仅输入

类型：变体（变体数组）

构成扩展数据（XData）的值数组。

返回值（RetVal）

无返回值。

言论

扩展数据是由使用 ObjectARX 或 AutoLISP 编写的应用程序创建的特定于实例的数据的一个示例。此数据可以添加到任何实体。此数据遵循实体的定义数据，并按照保存到文档中的顺序进行维护。（AutoCAD 会保留此信息，但不会使用它。

例子

VBA：

Sub Example_SetXdata()
    ' This example creates a line and attaches extended data to that line.
    
    ' Create the line
    Dim lineObj As AcadLine
    Dim startPt(0 To 2) As Double, endPt(0 To 2) As Double
    startPt(0) = 1#: startPt(1) = 1#: startPt(2) = 0#
    endPt(0) = 5#: endPt(1) = 5#: endPt(2) = 0#
    Set lineObj = ThisDrawing.ModelSpace.AddLine(startPt, endPt)
    ZoomAll

    ' Initialize all the xdata values. Note that first data in the list should be
    ' application name and first datatype code should be 1001
    Dim DataType(0 To 9) As Integer
    Dim Data(0 To 9) As Variant
    Dim reals3(0 To 2) As Double
    Dim worldPos(0 To 2) As Double
    
    DataType(0) = 1001: Data(0) = "Test_Application"
    DataType(1) = 1000: Data(1) = "This is a test for xdata"

    DataType(2) = 1003: Data(2) = "0"                   ' layer
    DataType(3) = 1040: Data(3) = 1.23479137438413E+40  ' real
    DataType(4) = 1041: Data(4) = 1237324938            ' distance
    DataType(5) = 1070: Data(5) = 32767                 ' 16 bit Integer
    DataType(6) = 1071: Data(6) = 32767                 ' 32 bit Integer
    DataType(7) = 1042: Data(7) = 10                    ' scaleFactor

    reals3(0) = -2.95: reals3(1) = 100: reals3(2) = -20
    DataType(8) = 1010: Data(8) = reals3                ' real
    
    worldPos(0) = 4: worldPos(1) = 400.99999999: worldPos(2) = 2.798989
    DataType(9) = 1011: Data(9) = worldPos              ' world space position
    
    ' Attach the xdata to the line
    lineObj.SetXData DataType, Data
    
    ' Return the xdata for the line
    Dim xdataOut As Variant
    Dim xtypeOut As Variant
    lineObj.GetXData "", xtypeOut, xdataOut
    
End Sub

可视化 LISP：

(vl-load-com)
(defun c:Example_SetXData()
    ;; This example creates a line and attaches extended data to that line.
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
    
    ;; Create the line
    (setq startPt (vlax-3d-point 1 1 0)
          endPt (vlax-3d-point 5 5 0))
    (setq modelSpace (vla-get-ModelSpace doc))
    (setq lineObj (vla-AddLine modelSpace startPt endPt))
    (vla-ZoomAll acadObj)

    ;; Initialize all the xdata values. Note that first data in the list should be
    ;; application name and first datatype code should be 1001
    (setq DataType (vlax-make-safearray vlax-vbInteger '(0 . 9)))
    (setq Data (vlax-make-safearray vlax-vbVariant '(0 . 9)))

    (vlax-safearray-put-element DataType 0 1001)
    (vlax-safearray-put-element Data 0 "Test_Application")

    (vlax-safearray-put-element DataType 1 1000)
    (vlax-safearray-put-element Data 1 "This is a test for xdata")

    ;; layer
    (vlax-safearray-put-element DataType 2 1003)
    (vlax-safearray-put-element Data 2 "0")

    ;; real
    (vlax-safearray-put-element DataType 3 1040)
    (vlax-safearray-put-element Data 3 1.23479137438413E+40)

    ;; distance
    (vlax-safearray-put-element DataType 4 1041)
    (vlax-safearray-put-element Data 4 1237324938)
  
    ;; 16 bit Integer
    (vlax-safearray-put-element DataType 5 1070)
    (vlax-safearray-put-element Data 5 32767)

    ;; 32 bit Integer
    (vlax-safearray-put-element DataType 6 1071)
    (vlax-safearray-put-element Data 6 32767)

    ;; scaleFactor
    (vlax-safearray-put-element DataType 7 1042)
    (vlax-safearray-put-element Data 7 10)

    ;; 3D point
    (setq reals3 (vlax-3d-point -2.95 100 -20))
    (vlax-safearray-put-element DataType 8 1010)
    (vlax-safearray-put-element Data 8 reals3)
    
    ;; world space position
    (setq worldPos (vlax-3d-point 4 400.99999999 2.798989))
    (vlax-safearray-put-element DataType 9 1011)
    (vlax-safearray-put-element Data 9 worldPos)
    
    ;; Attach the xdata to the line
    (vla-SetXData lineObj DataType Data)
    
    ;; Return the xdata for the line
    (vla-GetXData lineObj "" 'xtypeOut 'xdataOut)
)