CLSIDToProgID – Convert a CLSID into a ProgID

Private Declare Function ProgIDFromCLSID Lib "ole32.dll" (pCLSID As Any, _    lpszProgID As Long) As LongPrivate Declare Function CLSIDFromString Lib "ole32.dll" (ByVal lpszProgID As _    Long, pCLSID As Any) As LongPrivate Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (dest As _    Any, source As Any, ByVal bytes As Long)' Convert a string representation of a CLSID, including the' surrounding brace brackets, into the corresponding ProgID.Function CLSIDToProgID(ByVal CLSID As String) As String    Dim pResult As Long, pChar As Long    Dim char As Integer, length As Long    ' No need to use a special UDT    Dim guid(15) As Byte    ' convert from string to a binary CLSID    CLSIDFromString StrPtr(CLSID), guid(0)    ' convert to a string, get pointer to result    ProgIDFromCLSID guid(0), pResult    ' return a null string if not found    If pResult = 0 Then Exit Function    ' find the terminating null char    pChar = pResult - 2    Do        pChar = pChar + 2        CopyMemory char, ByVal pChar, 2    Loop While char    ' now get the entire string in one operation    length = pChar - pResult    ' no need for a temporary string    CLSIDToProgID = Space$(length  2)    CopyMemory ByVal StrPtr(CLSIDToProgID), ByVal pResult, lengthEnd Function

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