[PATCH] shcore: Don't return E_FAIL in IStream::SetSize() for read-only mode.

[Alexandre Julliard]

Jactry Zeng <jzeng at codeweavers.com> writes:

> @@ -913,14 +913,21 @@ static HRESULT WINAPI filestream_Seek(IStream *iface, LARGE_INTEGER move, DWORD
>  static HRESULT WINAPI filestream_SetSize(IStream *iface, ULARGE_INTEGER size)
>  {
>      struct shstream *stream = impl_from_IStream(iface);
> +    DWORD origin;
>  
>      TRACE("(%p, %s)\n", stream, wine_dbgstr_longlong(size.QuadPart));
>  
> -    if (!SetFilePointer(stream->u.file.handle, size.QuadPart, NULL, FILE_BEGIN))
> +    origin = SetFilePointer(stream->u.file.handle, 0, NULL, FILE_CURRENT);
> +    if (SetFilePointer(stream->u.file.handle, size.QuadPart, NULL, FILE_BEGIN) == INVALID_SET_FILE_POINTER)

While you're at it, using SetFilePointerEx() may be a good idea.

-- 
Alexandre Julliard
julliard at winehq.org