quartz: update ICOM_THIS_MULTI to follow the new COM standard

[Aric Stewart]

Meaning that I should not shift TO using that macro instead shift AWAY 
from using it?

I have been doing some cleanup and been shifting to using it more.

-aric

On 3/30/12 11:08 AM, Jacek Caban wrote:
> On 03/30/12 17:55, Aric Stewart wrote:
>> diff --git a/dlls/quartz/quartz_private.h b/dlls/quartz/quartz_private.h
>> index 35cd52b..d2f680c 100644
>> --- a/dlls/quartz/quartz_private.h
>> +++ b/dlls/quartz/quartz_private.h
>> @@ -38,7 +38,7 @@
>>   #define BYTES_FROM_MEDIATIME(time) SEC_FROM_MEDIATIME(time)
>>   #define MSEC_FROM_MEDIATIME(time) ((time) / 10000)
>>
>> -#define ICOM_THIS_MULTI(impl,field,iface) impl* const This=(impl*)((char*)(iface) - offsetof(impl,field))
>> +#define ICOM_THIS_MULTI(impl,field,iface) impl* const This=CONTAINING_RECORD(iface, impl, field)
>
> These should disappear once the clean up of affected code is done.
>
> Cheers,
> Jacek