关于清空Office剪切板的方法问题，网络上一直也有不少的说，总结下来一般有以下几种。

1、认为使用 Application.CutCopyMode = False 就可以了。其实不然，这只是取消剪切或复制模式并清除移动边框。并没有真正的清除剪切板上的数据。数据还是存在的。
2、使用API函数程序，代码如下：

Private Declare Function apiOpenClipboard Lib "user32" Alias "OpenClipboard" (ByVal hwnd As Long) As Long
Private Declare Function apiEmptyClipboard Lib "user32" Alias "EmptyClipboard" () As Long
Private Declare Function apiCloseClipboard Lib "user32" Alias "CloseClipboard" () As Long
Sub myClr()
apiOpenClipboard (0)'打开剪切板
apiEmptyClipboard'清空剪切板
apiCloseClipboard'关闭剪切板
End Sub

但是你会发现使用这段程序也不会清空Office的剪切板，这是因为Windows不会参与剪切板私有数据的管理。
3、前一段时间我看到一段代码，是用来清空Office的剪切板的，代码如下：

'---------------------------------------------------------------------------------------
' Module : Module1
' Purpose : Clear Windows and Office Clipboards
'---------------------------------------------------------------------------------------
Private Declare Function apiOpenClipboard Lib "user32" Alias "OpenClipboard" (ByVal hwnd As Long) As Long
Private Declare Function apiEmptyClipboard Lib "user32" Alias "EmptyClipboard" () As Long
Private Declare Function apiCloseClipboard Lib "user32" Alias "CloseClipboard" () As Long
Private Declare Sub Sleep Lib "kernel32.dll" (ByVal dwMilliseconds As Long)
Private Declare Function FindWindowEx Lib "user32.dll" _
Alias "FindWindowExA" (ByVal hWnd1 As Long, _
ByVal hWnd2 As Long, ByVal lpsz1 As String, _
ByVal lpsz2 As String) As Long
Private Declare Function PostMessage Lib "user32.dll" Alias _
"PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, _
ByVal wParam As Long, ByVal lParam As Long) As Long
Private Const WM_LBUTTONDOWN As Long = &H201&
Private Const WM_LBUTTONUP As Long = &H202&

' Creates a long variable out of two words
Private Function MakeLong(ByVal nLoWord As Integer, ByVal nHiWord As Integer) As Long
MakeLong = nHiWord * 65536 + nLoWord
End Function

Sub ClearOfficeClipboard()
Dim hMain&, hExcel2&, hClip&, hWindow&, hParent&
Dim lParameter&, sTask$
sTask = Application.CommandBars("Task Pane").NameLocal
' Handle for XLMAIN
hMain = Application.hwnd
' Find the OfficeClipboard Window
' 2 methods as we're not sure if it's visible
' ONCE it has been made visible the windowclass is created
' and remains loaded for the duration of the instance
Do
hExcel2 = FindWindowEx(hMain, hExcel2, "EXCEL2", vbNullString)
hParent = hExcel2: hWindow = 0
hWindow = FindWindowEx(hParent, hWindow, "MsoCommandBar", sTask)
If hWindow Then
hParent = hWindow: hWindow = 0
hWindow = FindWindowEx(hParent, hWindow, "MsoWorkPane", vbNullString)
If hWindow Then
hParent = hWindow: hWindow = 0
hClip = FindWindowEx(hParent, hWindow, "bosa_sdm_XL9", vbNullString)
If hClip > 0 Then
Exit Do
End If
End If
End If
Loop While hExcel2 > 0
If hClip = 0 Then
hParent = hMain: hWindow = 0
hWindow = FindWindowEx(hParent, hWindow, "MsoWorkPane", vbNullString)
If hWindow Then
hParent = hWindow: hWindow = 0
hClip = FindWindowEx(hParent, hWindow, "bosa_sdm_XL9", vbNullString)
End If
End If
If hClip = 0 Then
ClipWindowForce
hParent = hMain: hWindow = 0
hWindow = FindWindowEx(hParent, hWindow, "MsoWorkPane", vbNullString)
If hWindow Then
hParent = hWindow: hWindow = 0
hClip = FindWindowEx(hParent, hWindow, "bosa_sdm_XL9", vbNullString)
End If
End If
If hClip = 0 Then
MsgBox "Cant find Clipboard window"
Exit Sub
End If
lParameter = MakeLong(120, 18)
Call PostMessage(hClip, WM_LBUTTONDOWN, 0&, lParameter)
Call PostMessage(hClip, WM_LBUTTONUP, 0&, lParameter)
Sleep 100
DoEvents
End Sub

Sub ClipWindowForce()
Dim octl
With Application.CommandBars("Task Pane")
If Not .Visible Then
Application.ScreenUpdating = False
Set octl = Application.CommandBars(1).FindControl(ID:=809, recursive:=True)
If Not octl Is Nothing Then octl.Execute
.Visible = False
Application.ScreenUpdating = True
End If
End With
End Sub

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