On further reflection, a different and hopefully
better method is used now: VariantClear with VT_UNKNOWN
that should call ->Release().
It is now in the media/platimg addon in JAL
both in j601 and j602.
Thank you for finding and helping to resolve this.
--- bill lam <[EMAIL PROTECTED]> wrote:
> On further debugging on both wine and winxp, I found that STR being aliased
> so
> that its value actual changed after calling,
> GdipCreateBitmapFromStream ({.STR);BMP
> so the value passed to OleRelease was not the original {.STR but some
> unrelated
> memory pointer. wine honestly executed OleRelease so there was a memory fault
> while winxp seemed did nothing.
>
> Finally I saved value of {.STR first,
>
> PSTR=. {.STR
> GdipCreateBitmapFromStream PSTR;BMP
> ...
> coRelease PSTR NB. call PSTR->vtbl->release
>
> This works for both wine and winxp.
>
> You may further test if PSTR->vtbl->release not executed, will there be any
> memory leak.
>
> bill lam wrote:
> > Oleg Kobchenko wrote:
> >> I thought OleRelease would do (this)->lpVtbl->Release.
> >>
> >> I cannot find the sources for OleRelease
> >> http://source.winehq.org/source/dlls/olecli32/
> >>
> >> Any ideas?
> >>
> >> To call release as described is possible in j602
> >> with built-in pcall or using general/pcall addon.
> >
> > Not sure what OleRelease exactly does but (this)->lpVtbl->Release should
> > be the correct way to release an interface in COM.
> >
> > Did you find any example source code that use OleRelease?
> >
> > I conjecture that OleRelease in win32 platimg (under native window) is a
> > no-op.
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> >
>
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
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