Public Function FindPrinter(strPrinterName As String) As Boolean
    Dim pa As String
    Dim length As Integer
    Dim objRegistry As Object
    Dim arrSubkeys As Variant
    Dim subkey As Variant
    Dim kk As Variant
    
    
    On Error Resume Next
    Set objRegistry = GetObject("winmgmts:\\.\root\default:StdRegProv")
    
    objRegistry.EnumValues &H80000001, "Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts", arrSubkeys
    FindPrinter = False
    length = Len(strPrinter)
    For Each subkey In arrSubkeys
        objRegistry.GetStringValue &H80000001, "Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts\", subkey, kk
        pa = subkey & " on " & Mid(kk, InStr(kk, ",") + 1, InStr(kk, ":,") - InStr(kk, ","))
        
        If Left(pa, length) = strPrinterName Then
            FindPrinter = True
            Application.ActivePrinter = pa
            Exit For
        End If
    Next
    
    If FindPrinter = False Then
        MsgBox "沒有找到打印機。"
    End If
    
End Function