确定文件是否是在Excel中使用VBA使用
通过下面的功能，您可以确定文件是否正在被另一个进程使用。
如果您无法完全访问文件，该函数将返回True。
Function FileAlreadyOpen(FullFileName As String) As Boolean
' returns True if FullFileName is currently in use by another process
' example: If FileAlreadyOpen("C:\FolderName\FileName.xls") Then...
Dim f As Integer
f = FreeFile
On Error Resume Next
Open FullFileName For Binary Access Read Write Lock Read Write As #f
Close #f
' If an error occurs, the document is currently open.
If Err.Number <> 0 Then
FileAlreadyOpen = True
Err.Clear
'MsgBox "Error #" & Str(Err.Number) & " - " & Err.Description
Else
FileAlreadyOpen = False
End If
On Error GoTo 0
End Function