Thu Jan 10 02:32:12 2013: Request 42694 was acted upon.
Transaction: Correspondence added by BULKDD
Queue: Win32-API
Subject: Callback and Structs
Broken in: 0.58
Severity: Normal
Owner: Nobody
Requestors: msjuni...@hotmail.com
Status: open
Ticket <URL: https://rt.cpan.org/Ticket/Display.html?id=42694 >
On Tue Jan 08 22:57:15 2013, BULKDD wrote:
> On Fri Oct 19 04:19:35 2012, BULKDD wrote:
> > On Thu Jan 22 21:13:41 2009, juniorc wrote:
> > > Cosimo,
> > >
> > > I am currently writing a Win32::Video::Capture module making calls to
> > > avicap32.dll. Several "messages" require the use of "structs" and
> > > "callbacks". Thank to the "callback3.pl" example in the sample
> > > directory, it was clear how to use nested structs in a callback
> > > environment. Unfortunately both in my own code and the aforementioned
> > > example I encure repetitive errors: "Attempt to free unreferenced
> > > scalar". More details in the logs below.
> > > At the current time and in order to proceed without the
> > > Win32::API::Struct, I am using the Win32::API::Callback and a few
calls
> > > to the "RtlMoveMemory" and "lstrcpy" functions of the kernel32.dll.
> > > Although this work without any issues, I have to say the approach
lacks
> > > the "elegance & readability" that the use of Win32::API::Struct would
> > > give. It seems that there might be an "extra" call to a
"sv_2mortal" in
> > > the XS portion. Is there anything i can do on my end to help?
> > >
> > > Thank you in advance,
> > >
> > > Giuseppe "Jr."
> >
> > Can you try the latest CPAN version of Win32::API (0.72) and report how
> > it works for you?
>
> Try 2. The current version is 0.74 on CPAN.
Closing no response. Struct got some improvements and bug fixes in 2012,
so maybe one of them would have fixed the problems claimed by the OP.
