Vista - Possible bug in shell?

Hi everyone,

I'm developing a context menu shell extension. It is working properly in all
previous versions of Windows. But Windows Vista (RTM) has a strange problem.
If I declare my extension like

class MyMenuExt : public IContextMenu3, public IShellExtInit
{
....
}

everything runs smoothly, but in case

class MyMenuExt : public IShellExtInit, public IContextMenu3
{
....
}

where IShellExtInit is declared first, shell32.dll raises an access
violation exception after calling the Initialize method 8 times with garbage
arguments. I'm pretty sure that my reference counting code (which is
boiler-plate) and other parts of my class are error-free. After debugging
several hours with WinDbg I could not figure out why Vista behaves this way.
As I said, prior versions run the code without a glitch in both cases. I
would appreciate if someone could give a reasonable answer.

Can

i doubt this is the right ng for that.
find some on programming for vista.

"Pierre" <can.balioglu at gmx.de_DONOTSPAM_> schrieb im Newsbeitrag
news:ONS57a$EHHA.4108@TK2MSFTNGP03.phx.gbl...
> Hi everyone,
>
> I'm developing a context menu shell extension. It is working properly in
> all previous versions of Windows. But Windows Vista (RTM) has a strange
> problem. If I declare my extension like
>
> class MyMenuExt : public IContextMenu3, public IShellExtInit
> {
> ...
> }
>
> everything runs smoothly, but in case
>
> class MyMenuExt : public IShellExtInit, public IContextMenu3
> {
> ...
> }
>
> where IShellExtInit is declared first, shell32.dll raises an access
> violation exception after calling the Initialize method 8 times with
> garbage arguments. I'm pretty sure that my reference counting code (which
> is boiler-plate) and other parts of my class are error-free. After
> debugging several hours with WinDbg I could not figure out why Vista
> behaves this way. As I said, prior versions run the code without a glitch
> in both cases. I would appreciate if someone could give a reasonable
> answer.
>
> Can
>