Re: [PATCH 0/7] MR8900: Comment or define undefined WinRT member interfaces (2/2)

[Rémi Bernon (＠rbernon)]

Rémi Bernon (@rbernon) commented about include/windows.media.mediaproperties.idl:
> - {
> -
>    [propget] HRESULT Properties([out, retval] Windows.Media.MediaProperties.MediaPropertySet **value);
> -
>    [propget] HRESULT Type([out, retval] HSTRING *value);
> -
>    [propput] HRESULT Subtype([in] HSTRING value);
> -
>    [propget] HRESULT Subtype([out, retval] HSTRING *value);
> - }
> -
> - [
> -
>    contract(Windows.Foundation.UniversalApiContract, 1.0),
> -
>    exclusiveto(Windows.Media.MediaProperties.AudioEncodingProperties),
> -
>    uuid(98f10d79-13ea-49ff-be70-2673db69702c)
> - ]
> - interface IAudioEncodingPropertiesWithFormatUserData : IInspectable
> - {
> -
>    HRESULT SetFormatUserData([in] UINT32 __value_size, [in, size_is(__value_size)] BYTE *value);
> -
>    HRESULT GetFormatUserData([out] UINT32 * __value_size, [out, size_is(, *__value_size)] BYTE **value);

Why the underscores?