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Private Declare Function SendMessagebyString Lib _
"user32" Alias "SendMessageA" (ByVal hWND As Long, _
ByVal wMsg As Long, ByVal wParam As Long, _
ByVal lParam As String) As Long
Private Const CB_FINDSTRINGEXACT = &H158
If SendMessagebyString(droplist.hWnd, CB_FINDSTRINGEXACT, -1, "重命名") = -1 Then
Msgbox “重命名选项不存在"
droplist.Additem "重命名"
End If