VBA中播放声音

在VBA中我们需要定时或者输入错误时播放声音来给用户进行提示，这是一个比较有用的功能，这里给出一段比较有效的代码，它调用了”winmm.dll”中的sndPlaySoundA函数：
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VBA中创建全局惟一序号GUID

VBA中创建全局惟一序号：

Private Declare Function CoCreateGuid Lib "OLE32.DLL" (pGuid As GUID) As Long

Private Type GUID
    Data1 As Long
    Data2 As Integer
    Data3 As Integer
    Data4(0 To 7) As Byte
End Type

Public Function CreateGUID() As String
    Dim G As GUID
    With G
    If (CoCreateGuid(G) = 0) Then
    CreateGUID = _
        String$(8 - Len(Hex$(.Data1)), "0") & Hex$(.Data1) & _
        String$(4 - Len(Hex$(.Data2)), "0") & Hex$(.Data2) & _
        String$(4 - Len(Hex$(.Data3)), "0") & Hex$(.Data3) & _
        IIf((.Data4(0) < &H10), "0", "") & Hex$(.Data4(0)) & _
        IIf((.Data4(1) < &H10), "0", "") & Hex$(.Data4(1)) & _
        IIf((.Data4(2) < &H10), "0", "") & Hex$(.Data4(2)) & _
        IIf((.Data4(3) < &H10), "0", "") & Hex$(.Data4(3)) & _
        IIf((.Data4(4) < &H10), "0", "") & Hex$(.Data4(4)) & _
        IIf((.Data4(5) < &H10), "0", "") & Hex$(.Data4(5)) & _
        IIf((.Data4(6) < &H10), "0", "") & Hex$(.Data4(6)) & _
        IIf((.Data4(7) < &H10), "0", "") & Hex$(.Data4(7))
    End If
    End With
End Function

使用时调用:

Dim UniqueID As String
UniqueID = CreateGUID()