有没什么简便方法删除当前模型空间里某一区域内的所有块呢?

丹雪

是这样的，在层ExtrudeFace和层zz-1里面分别有很多插入的块----树和路灯,现在要把在某个实体的上面的树和路灯删除,要怎么办呢?


是不是应该建立选择集?怎么样设置过滤条件呢?

mccad

应该建立选择集，过滤的条件是这两个层中的某个区域的对象。区域可以是矩形区域或多边形区域。
选择完对象后使用Erase方法来删除选择集及对象。

丹雪

就如下图所示,我删除4条3dpoly线围成区域内的所有块!要怎么办呢?我自己写了点代码,但运行老是出错,帮我看看好吗?mccad Public Sub DelBlock() 定义选择集setb和setp分别用于选择块和4条3dpolyline线
Dim setb As AcadSelectionSet
Dim setp As AcadSelectionSet
Dim i As Integer i = ThisDrawing.SelectionSets.Count While (i)
Set setb = ThisDrawing.SelectionSets.Item(i - 1)
If setb.Name = "BlockR" Or setb.Name = "objlh" Then
setb.Delete
End If
i = i - 1
Wend Set setb = ThisDrawing.SelectionSets.Add("BlockR")
Set setp = ThisDrawing.SelectionSets.Add("objlh") Dim gpcode(1) As Integer
Dim datavalue(1) As Variant gpcode(0) = 0
datavalue(0) = "polyline"
gpcode(1) = 8
datavalue(1) = "Pathh"
setp.Select acSelectionSetAll, , , gpcode, datavalue 查找选择集setp中两条相交polyline,把交点返回个cwp1,并把这两条线删除 Dim obj1 As Acad3DPolyline
Dim obj2 As Acad3DPolyline
Dim cwp1 As Variant
Dim cwp2 As Variant
Dim pnt As Variant
Set obj1 = setp.Item(0)
For i = 1 To setp.Count - 1
Set obj2 = setp.Item(i)
pnt = obj1.IntersectWith(obj2, acExtendNone)

If VarType(pnt) <> vbEmpty Then
Set cwp1 = pnt
setp.Item(0).Delete
setp.Item(i).Delete
Exit For
End If
Next i 查找剩下的两条相交线,把交点返回给cwp2
Set obj1 = setp.Item(0)
For i = 1 To setp.Count - 1
Set obj2 = setp.Item(i)
pnt = obj1.IntersectWith(obj2, acExtendNone)
If VarType(pnt) <> vbEmpty Then
Set cwp2 = pnt
setp.Item(0).Delete
setp.Item(i).Delete
Exit For
End If
Next i setp.erase 选择区域内的块,清空! gpcode(0) = 2
datavalue(0) = "BlockReference" setb.Select acSelectionSetCrossing, cwp1, cwp2, gpcode, datavalue
setb.Erase

End Sub http://[dir=500,350]请输入地址[/dir][dir= ]c[/dir][/QUOTE]

丹雪

惨了，我现在不知道怎么把自己电脑上面的图片给贴上来了！





真是的！