CAD VBA的块和参照过滤方法
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共享一下CAD-VBA中，屏幕选择集中对块参照的过滤方法，供参考：'''''''''''''''''''''''''''''''''''''''''''''''''''
Dim melem As AcadEntity
Dim selsetCollection As AcadSelectionSets '定义选择集集合
Dim i,j As Long
Dim ent As Object
' '''''''''''''''''''查找图形中的每个选择集,是否已存在
Set selsetCollection = ThisDrawing.SelectionSets
i = 0
j = 0
For Each FilterSet In selsetCollection
If "xxx" = Then’’’’”xxx”为自己想用的选择集名
j = 1
Exit For
End If
i = i + 1
Next
If j = 0 Then
Set FilterSet = ThisDrawing.SelectionSets.Add("xxx")
Else
FilterSet.Clear
End If
‘’’’’’’定义过滤器数组，设定过滤参数
Dim sFilterType(1) As Integer
Dim sFilterData(1) As Variant
sFilterType(0) = 100
sFilterData(0) = "AcDbBlockReference"
sFilterType(1) = 2
sFilterData(1) = "~ "
FilterSet.SelectOnScreen sFilterType, sFilterData ‘’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’’
另附DXF组码表，以便对上段程式的理解；
DXF下表列出了组码或组码范围以及组码值的解释。在此表中，“固定”表明组码始终具有相同的用途。如果组码不固定，则其用途取决于上下文。关于此表中使用的缩写和格式方面的信息。