[2/2] oleaut32: Implement a better stub for IPicture::SaveAsFile.

[Dmitry Timoshkov]

Alexandre Julliard <julliard at winehq.org> wrote:

> >> >> > Based on OLEPictureImpl_Save implementation.
> >> >> 
> >> >> Surely you don't need to duplicate all of it.
> >> >
> >> > Otherwise I would need to rewrite both SaveAsFile() and Save(), which could be
> >> > inappropriate for the code freeze, so I decided to just fix SaveAsFile() which
> >> > is clearly broken at the moment. It should be possible to reduce the duplication,
> >> > but only after 1.8 is released.
> >> 
> >> OK, if you promise to do that after 1.8, I'll put it in ;-)
> >
> > It should be pretty easy to make Save() call SaveAsFile() as a backend.
> 
> I failed to notice in my test run yesterday, but this is causing test
> failures in gdiplus. It's possible that this would have far-reaching
> consequences, so I'm going to revert the patch for now. It will have to
> be redone properly after code freeze. Sorry about that.

Failures in gdiplus tests are caused by broken code in gdiplus, in particular
GdipCloneImage() is broken. First, it calls IPicture_SaveAsFile() with 'mem_copy'
parameter set to FALSE, and according to the tests IPicture_SaveAsFile() always
returns E_FAIL in that case. Second, IPicture_SaveAsFile() has never been writing
correct data to the provided stream, so despite that it hasn't returned an error
the result just couldn't be correct. It looks like whoever has written that code
hasn't tested it at all.

Regardless of the above, I'm fine with the revert, it seems like I no longer
have obligations to fix the code duplication :)

-- 
Dmitry.