Private Sub WrapFileLinesSample()
    Const strFn = "WrapFileLinesSample"

    Dim strInFile As String
    strInFile = CombinePathAndFile(GetWindowsDirectory, "WIN.INI")
    strInFile = InputBox("Input file: ({Esc} cancels.)", strFn, strInFile)
    If Len(strInFile) = 0 Then Exit Sub

    Dim strOutFile As String
    strOutFile = GetTempFileName(Null, strFn)
    strOutFile = InputBox("Output file: (FILE WILL BE OVERWRITTEN; {Esc} cancels.)", strFn, strOutFile)
    If Len(strOutFile) = 0 Then Exit Sub

    Dim strMaxWidth As String
    strMaxWidth = InputBox("Maximum line width: ({Esc} cancels.)", strFn, "78")
    If Len(strMaxWidth) = 0 Then Exit Sub

    MsgBox "Return = " & WrapFileLines(strInFile, strOutFile, strMaxWidth) & " (True means success; False means failure.)", vbInformation, strFn
End Sub