list<CComBSTR> error.

[ishekar]

Hi all,

Dont hit me for asking this in this forum but i feel this question is
related to allocators hence i think its the right place.
I was trying to use the list of CComBSTR but was getting this error. can
anyone tell me why, is there a workaround

list<CComBSTR> lstStr;
lstStr.push_bac k(CComBSTR(L"te st"));

e:\program files\microsoft visual studio\vc98\inc lude\list(222) : error
C2664: 'construct' : cannot convert parameter 1 from 'unsigned short ** ' to
'class ATL::CComBSTR *'
Types pointed to are unrelated; conversion requires
reinterpret_cas t, C-style cast or function-style cast
e:\program files\microsoft visual studio\vc98\inc lude\list(218) :
while compiling class-template member function 'class std::list<class
ATL::CComBSTR,c lass std::allocator< class ATL::CComBSTR> >::iterator
__thiscall std::list<class ATL::CComB
STR,class std::allocator< class ATL::CComBSTR> >::insert(cla ss
std::list<class ATL::CComBSTR,c lass std::allocator< class ATL::CComBSTR>[color=blue]
>::iterator,con st class ATL::CComBSTR &)'[/color]
Error executing cl.exe.

The above error is found in the line
allocator.const ruct(&_Acc::_Va lue(_S), _X);

TFH
ISR

[John Harrison]

Re: list&lt;CComBST R&gt; error.


"ishekar" <ishekara@vsnl. net> wrote in message
news:bgtllp$349 $1@news.mch.sbs .de...[color=blue]
> Hi all,
>
> Dont hit me for asking this in this forum but i feel this question is
> related to allocators hence i think its the right place.
> I was trying to use the list of CComBSTR but was getting this error. can
> anyone tell me why, is there a workaround
>
> list<CComBSTR> lstStr;
> lstStr.push_bac k(CComBSTR(L"te st"));
>[/color]

CComBSTR is not suitable for the STL because it stupidly overloads the &
operator.

In ATL 3 there is a wrapper class that makes CComBSTR STL compatible. I
forget what its called, or whether it is even available to you using VC++ 6.
Check in an ATL/COM group.

john

[ishekar]

Re: list&lt;CComBST R&gt; error.

I got the answer. CComBSTR does not support the & operator hence the ATL
class CAdapt which does this can be used.
typedef list< CAdapt<CComBSTR > > lstString;

Thanks
ISR

"John Harrison" <john_andronicu s@hotmail.com> wrote in message
news:bgtmea$rk2 f8$1@ID-196037.news.uni-berlin.de...[color=blue]
>
> "ishekar" <ishekara@vsnl. net> wrote in message
> news:bgtllp$349 $1@news.mch.sbs .de...[color=green]
> > Hi all,
> >
> > Dont hit me for asking this in this forum but i feel this question is
> > related to allocators hence i think its the right place.
> > I was trying to use the list of CComBSTR but was getting this error. can
> > anyone tell me why, is there a workaround
> >
> > list<CComBSTR> lstStr;
> > lstStr.push_bac k(CComBSTR(L"te st"));
> >[/color]
>
> CComBSTR is not suitable for the STL because it stupidly overloads the &
> operator.
>
> In ATL 3 there is a wrapper class that makes CComBSTR STL compatible. I
> forget what its called, or whether it is even available to you using VC++[/color]
6.[color=blue]
> Check in an ATL/COM group.
>
> john
>
>[/color]