使用任何对象方法和属性来重定义块。Block 重定义块时,图形中对该块的所有参照将立即更新以反映新定义。 重定义会影响块的先前和将来插入。常量属性将丢失并替换为任何新的常量属性。变量属性保持不变,即使新块没有属性也是如此。 重定义块定义中的对象本示例创建一个块,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。块定义中的圆将更新,并且块参照将自动更新。 Sub Ch10_RedefiningABlock() ' 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 ' Redefine the circle in the block, ' and update the block reference circleObj.radius = 3 blockRefObj.Update End Sub |
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