关于分解块引用 （VBA/ActiveX）

显示分解块参照的结果

本示例创建一个块，并在块的定义中添加一个圆。然后将块作为块参照插入到图形中。然后分解块参照，并显示分解过程产生的对象及其对象类型。

Sub Ch10_ExplodingABlock()
 ' Define the block
 Dim blockObj As AcadBlock
 Dim insertionPnt(0 To 2) As Double
 insertionPnt(0) = 0
 insertionPnt(1) = 0
 insertionPnt(2) = 0
 Set blockObj = ThisDrawing.Blocks.Add _
 (insertionPnt, "CircleBlock")
 
 ' Add a circle to the block
 Dim circleObj As AcadCircle
 Dim center(0 To 2) As Double
 Dim radius As Double
 center(0) = 0
 center(1) = 0
 center(2) = 0
 radius = 1
 Set circleObj = blockObj.AddCircle(center, radius)
 
 ' Insert the block
 Dim blockRefObj As AcadBlockReference
 insertionPnt(0) = 2
 insertionPnt(1) = 2
 insertionPnt(2) = 0
 Set blockRefObj = ThisDrawing.ModelSpace.InsertBlock _
 (insertionPnt, "CircleBlock", 1#, 1#, 1#, 0)
 ZoomAll
 MsgBox "The circle belongs to " & blockRefObj.ObjectName
 
 ' Explode the block reference
 Dim explodedObjects As Variant
 explodedObjects = blockRefObj.Explode
 
 ' Loop through the exploded objects
 Dim I As Integer
 For I = 0 To UBound(explodedObjects)
 explodedObjects(I).Color = acRed
 explodedObjects(I).Update
 MsgBox "Exploded Object " & I & ": " _
 & explodedObjects(I).ObjectName
 explodedObjects(I).Color = acByLayer
 explodedObjects(I).Update
 Next
End Sub