Check Whether an Excel File Is Open on a Network : Windows Resources « Windows API « VBA / Excel / Access / Word

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VBA / Excel / Access / Word » Windows API » Windows Resources 
Check Whether an Excel File Is Open on a Network
 
Private Declare Function lOpen Lib "kernel32" Alias "_lopen" (ByVal lpPathName As String, ByVal iReadWrite As LongAs Long
Private Declare Function lClose Lib "kernel32" Alias "_lclose" (ByVal hFile As LongAs Long
Private Const OF_SHARE_EXCLUSIVE = &H10
Private Function FileIsOpen(strFullPath_FileName As StringAs Boolean
    Dim hdlFile As Long
    Dim lastErr As Long
    hdlFile = -1
    hdlFile = lOpen(strFullPath_FileName, OF_SHARE_EXCLUSIVE)
    If hdlFile = -Then
        lastErr = Err.LastDllError
    Else
        lClose (hdlFile)
    End If
    FileIsOpen = (hdlFile = -1And (lastErr = 32)
End Function
Sub CheckFileOpen()
    If FileIsOpen("C:\C.xlsx"Then
        MsgBox "File is open"
    
    Else
        MsgBox "File is not open"
    End If
    
End Sub

 
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