Hi all
Ya _variant_t and _bstr_t is an ATL wrapper of variant and BSTR but
CComVariant and CComBSTR is microsoft wrapper of variant and BSTR... there
is no added advantage of one over other.

regards
vinay

-----Original Message-----
From: Jai Kishore [mailto:jkishoreQUARK.STPM.SOFT.NET]
Sent: Monday, July 02, 2001 9:23 AM
To: DCOMDISCUSS.MICROSOFT.COM
Subject: Re: Memory Leaks in MTS components

Hi All,
Isn't using classes like _variant_t and _bstr_t a better idea than
their counter parts like CComVariant And CComBSTR.
I dunno but I have been using these classes for a prett y long time
and have never observed any memory leaks.

Regards.

Jai

-----Original Message-----
From: Vinay_Balasubramaniam [mailto:Vinay_BalasubramaniamSATYAM.COM]
Sent: Monday, July 02, 2001 9:22 AM
To: DCOMDISCUSS.MICROSOFT.COM
Subject: Re: Memory Leaks in MTS components

Hi Pradyot
See the funda is if ur using the same CComVariant varible again and again
then u need to call .empty else u dont have to.
ex:
CComVariant temp
temp ="fsdf"
temp.empty();
temp = "dgdgfgv"

i hope this clears ur doubt.
about CComBSTR... u dont have to do .empty the wrapper class does it by
itself... but for safety sake when u reassign anything back to the same
variable ... do .empty before that.
I had faced problem by not doing it

regards
vinay

-----Original Message-----
From: Pradyot Phadke [mailto:pphadkeMELSTAR.COM]
Sent: Sunday, July 01, 2001 2:24 PM
To: DCOMDISCUSS.MICROSOFT.COM
Subject: Re: Memory Leaks in MTS components

Hi Vinay,
Thanks for prompt reply.
Some doubts are still there.First is I have put break point at the
starting of the method so there is no code coming into the picture(that of
server component).Secondly,the message in the debug output window indicates
about heap. not stack.The number of these heap messages are there those
many messageboxes are there.
finally the action(remedy)I am not very clear.When I declare a var of
CComVariant/CComBSTR type before using it I need to say ccomvariant.clear()
or ccombstr.empty()? We call it afterwords. Still not very clear.

Requesting guidence.
pradyot.

Hi
Ya this is definately due to memory leaks...
I order to overcome this .. u have to clear all ur CComVariants variable
which u have used in ur code. Apart from this see that there is no memory
leaks due to CComBSTR's...
CComVariants allocate on the stack .. u gotto to do

CComVariants temp;
temp.clear();

before u resue temp..
this should solve ur problem..

vinay

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