Item 方法 (ActiveX)
获取集合、组或选择集中给定索引处的成员对象。 支持的平台:仅限 Windows 签名VBA: RetVal = object.Item(Index)
返回值 (RetVal)类型:对象 集合或选择集中给定索引位置的对象。 言论此方法支持基于字符串的迭代。例如,如果使用以下语句创建名为 BLOCK1 的块: Set block1 = Blocks.Add("BLOCK1") 您可以通过以下语句引用对象: Set whichblock = Blocks.Item("BLOCK1") 注意:与集合一起使用时,Item 方法区分大小写;对于其他集合,它不区分大小写。SelectionSets
字典:此方法的返回值类型为 。这允许您从字典集合中检索不属于 类型的命名对象。IAcadObjectDictionary 例子VBA: Sub Example_Item() ' This example shows two uses of the Item method. ' The first uses Item with an index counter to return an item in a collection. ' The second uses Item with a string to return an item in a collection. ' Iterate thru the model space collection, ' get all the items in the collection ' and store them in an array called newObjs Dim count As Integer count = ThisDrawing.ModelSpace.count ReDim newObjs(count) As AcadEntity Dim index As Integer For index = 0 To count - 1 Set newObjs(index) = ThisDrawing.ModelSpace.Item(index) Next ' Get a particular item, in this case a layer, based on name "0" Dim layerObj As AcadLayer Set layerObj = ThisDrawing.Layers.Item("0") End Sub 可视化 LISP: (vl-load-com) (defun c:Example_Item() ;; This example shows two uses of the Item method. ;; The first uses Item with an index counter to return an item in a collection. ;; The second uses Item with a string to return an item in a collection. (setq acadObj (vlax-get-acad-object)) (setq doc (vla-get-ActiveDocument acadObj)) ;; Iterate thru the model space collection, ;; get all the items in the collection ;; and store them in an array called newObjs (setq count (vla-get-Count (vla-get-ModelSpace doc)) index 0) (setq newObjs (vlax-make-safearray vlax-vbObject (cons 0 count))) (while (>= (1- count) index) (vlax-safearray-put-element newObjs index (vla-Item (vla-get-ModelSpace doc) index)) (setq index (1+ index)) ) ;; Get a particular item, in this case a layer, based on name "0" (setq layerObj (vla-Item (vla-get-Layers doc) "0")) ) |
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