两个范围之间的区别(Difference between two ranges)

我可以找到大量的关于“联盟”和“相交” VBA方法问题，并例子，但我无法找到关于“差集”的方法什么呢？ 这是否存在（不是使用工会的其他组合和相交）？

我试图找到让所有范围1，不包括任何范围1，如果不知道任何范围的大小或形状重叠范围2的简单方式。

任何帮助将不胜感激。

编辑。

尝试性解决方案，其中RNG1是红色部分和RNG2是蓝色的部分（已调试检查这些是正确的）：

rng = SetDifference(rng, highlightedColumns)

Function SetDifference(Rng1 As Range, Rng2 As Range) As Range
On Error Resume Next
If Application.Intersect(Rng1, Rng2).Address <> Rng2.Address Then
    Exit Function
On Error GoTo 0
Dim aCell As Range
For Each aCell In Rng1
    Dim Result As Range
    If Application.Intersect(aCell, Rng2) Is Nothing Then
        Set Result = Union(Result, aCell)
        End If
    Next aCell
Set SetDifference = Result
End If
End Function

Answer 1:

试试这个功能后，我已经好转了一点：

Function SetDifference(Rng1 As Range, Rng2 As Range) As Range
On Error Resume Next

If Intersect(Rng1, Rng2) Is Nothing Then
    'if there is no common area then we will set both areas as result
    Set SetDifference = Union(Rng1, Rng2)
    'alternatively
    'set SetDifference = Nothing
    Exit Function
End If

On Error GoTo 0
Dim aCell As Range
For Each aCell In Rng1
    Dim Result As Range
    If Application.Intersect(aCell, Rng2) Is Nothing Then
        If Result Is Nothing Then
            Set Result = aCell
        Else
            Set Result = Union(Result, aCell)
        End If
    End If
Next aCell
Set SetDifference = Result

End Function

请记住，这样称呼它：

Set Rng = SetDifference(Rng, highlightedColumns)

Answer 2:

^迭代通过每一个细胞都像电话很慢

SetDifference（ActiveSheet.Cells，ActiveSheet.Range（ “A1”））“的所有单元A1除外

因此：

'(needed by the 2nd function)
Public Function Union(ByRef rng1 As Range, _
                      ByRef rng2 As Range) As Range
    If rng1 Is Nothing Then
        Set Union = rng2
        Exit Function
    End If
    If rng2 Is Nothing Then
        Set Union = rng1
        Exit Function
    End If
    If Not rng1.Worksheet Is rng2.Worksheet Then
        Exit Function
    End If
    Set Union = Application.Union(rng1, rng2)
End Function



Public Function Complement(ByRef rngA As Range, _
                           ByRef rngB As Range) As Range
    Dim rngResult As Range
    Dim rngResultCopy As Range
    Dim rngAreaA As Range
    Dim rngAreaB As Range
    Dim lngX1 As Long
    Dim lngY1 As Long
    Dim lngX2 As Long
    Dim lngY2 As Long
    Dim lngX3 As Long
    Dim lngY3 As Long
    Dim lngX4 As Long
    Dim lngY4 As Long
    Dim lngX5 As Long
    Dim lngY5 As Long
    Dim lngX6 As Long
    Dim lngY6 As Long

    If rngA Is Nothing Then
        Exit Function
    End If
    If rngB Is Nothing Then
        Set Complement = rngA
        Exit Function
    End If
    If Not rngA.Worksheet Is rngB.Worksheet Then
        Exit Function
    End If
    Set rngResult = rngA
    With rngA.Worksheet
        For Each rngAreaB In rngB.Areas
            If rngResult Is Nothing Then
                Exit For
            End If
            lngX3 = rngAreaB.Row
            lngY3 = rngAreaB.Column
            lngX4 = lngX3 + rngAreaB.Rows.Count - 1
            lngY4 = lngY3 + rngAreaB.Columns.Count - 1
            Set rngResultCopy = rngResult
            Set rngResult = Nothing
            For Each rngAreaA In rngResultCopy.Areas
                lngX1 = rngAreaA.Row
                lngY1 = rngAreaA.Column
                lngX2 = lngX1 + rngAreaA.Rows.Count - 1
                lngY2 = lngY1 + rngAreaA.Columns.Count - 1
                If lngX3 > lngX1 Then lngX5 = lngX3 Else lngX5 = lngX1
                If lngY3 > lngY1 Then lngY5 = lngY3 Else lngY5 = lngY1
                If lngX4 > lngX2 Then lngX6 = lngX2 Else lngX6 = lngX4
                If lngY4 > lngY2 Then lngY6 = lngY2 Else lngY6 = lngY4
                If lngX5 <= lngX6 And lngY5 <= lngY6 Then
                    If lngX5 > lngX1 Then
                        Set rngResult = Union(rngResult, .Range(.Cells(lngX1, lngY1), .Cells(lngX5 - 1, lngY2)))
                    End If
                    If lngY5 > lngY1 Then
                        Set rngResult = Union(rngResult, .Range(.Cells(lngX5, lngY1), .Cells(lngX6, lngY5 - 1)))
                    End If
                    If lngY2 > lngY6 Then
                        Set rngResult = Union(rngResult, .Range(.Cells(lngX5, lngY6 + 1), .Cells(lngX6, lngY2)))
                    End If
                    If lngX2 > lngX6 Then
                        Set rngResult = Union(rngResult, .Range(.Cells(lngX6 + 1, lngY1), .Cells(lngX2, lngY2)))
                    End If
                Else
                    Set rngResult = Union(rngResult, rngAreaA)
                End If
            Next rngAreaA
        Next rngAreaB
    End With
    Set Complement = rngResult
End Function

Answer 3:

当范围同时拥有多个领域，需要不同的方法。 我没有弥补这个例子的核心理念，不记得在哪里，我发现这个想法（使用xlCellTypeConstants ）。 我适应它，使之与地区范围的工作：

' Range operator that was missing
Public Function rngDifference(rn1 As Range, rn2 As Range) As Range
Dim rnAreaIntersect As Range, varFormulas As Variant
Dim rnAreaS As Range, rnAreaR As Range, rnAreaDiff As Range
Dim rnAreaModified As Range, rnOut As Range
 On Error Resume Next
 Set rngDifference = Nothing
 If rn1 Is Nothing Then Exit Function
 If rn2 Is Nothing Then Set rngDifference = rn1: Exit Function

 Set rnOut = Nothing
 For Each rnAreaS In rn1.Areas
    Set rnAreaModified = rnAreaS

    For Each rnAreaR In rn2.Areas
        Set rnAreaIntersect = Intersect(rnAreaModified, rnAreaR)
        If rnAreaIntersect Is Nothing Then
            Set rnAreaDiff = rnAreaModified
        Else ' there is interesection
            'save
            varFormulas = rnAreaS.Formula

            rnAreaS.Value = 0:  rnAreaIntersect.ClearContents
            If rnAreaS.Cells.Count = 1 Then
               Set rnAreaDiff = Intersect(rnAreaS.SpecialCells(xlCellTypeConstants), rnAreaS)
            Else
               Set rnAreaDiff = rnAreaS.SpecialCells(xlCellTypeConstants)
            End If
            'restore
            rnAreaS.Formula = varFormulas
        End If
        If Not (rnAreaModified Is Nothing) Then
            Set rnAreaModified = Intersect(rnAreaModified, rnAreaDiff)
        End If
    Next
    If Not (rnAreaModified Is Nothing) Then
        If rnOut Is Nothing Then
            Set rnOut = rnAreaModified
        Else
            Set rnOut = Union(rnOut, rnAreaModified)
        End If
    End If
 Next
 Set rngDifference = rnOut
End Function

希望这可以帮助

文章来源: Difference between two ranges