private delegate bool PwrSchemesEnumProc(uint uiIndex, UInt32 dwName, [MarshalAs(UnmanagedType.LPWStr)] string sName, UInt32 dwDesc, [MarshalAs(UnmanagedType.LPWStr)] string sDesc, ref PowerPolicy pp, int lParam);

Private Delegate Function PwrSchemesEnumProc(ByVal uiIndex As UInteger, ByVal dwName As UInt32, <MarshalAs(UnmanagedType.LPWStr)> ByVal sName As String, ByVal dwDesc As UInt32, MarshalAs(UnmanagedType.LPWStr)> ByVal sDesc As String, ByRef pp As PowerPolicy, ByVal lParam As Integer) As Boolean

private static extern bool EnumPwrSchemes(PwrSchemesEnumProc lpfnPwrSchemesEnumProc, int lParam);

PwrSchemesEnumProc