RE: ATL::CString doesn't have conversion operator for LPTSTR...

As a note, the "canonical" way to convert a CString to an LPTSTR has been to
double cast it via (LPTSTR)(LPCTSTR) or something similar using the
C++-specific cast expressions.

This should, of course, only be done if you are sure you are not going to
alter the string.

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Richard
B.
Sent: Thursday, June 09, 2011 7:35 PM
To: [email protected]
Subject: Re: [wtl] ATL::CString doesn't have conversion operator for
LPTSTR...

You are right - it should be LPCTSTR.

Problem solved - I was including atlstr.h after all other ATL/WTL includes.
When I placed it earlier, after atlbase.h, the compilation error
disappeared.

Best Regards,
Richard B.

On 09/06/2011 23:52, Anna-Jayne Metcalfe wrote:
> Hi Richard,
>
>  > While playing around with DDX and WTL, I got a compilation error 
> for the DDX_TEXT macro saying "cannot convert parameter 2 from 
> 'ATL::CString' to 'LPTSTR'".
>
>  > I would prefer to keep using ATL's CString, and modifying atlstr.h 
> to add a LPTSTR conversion operator is obviously not ideal, so any 
> ideas on how best to handle this ?
>
> I've not seen this with DDX.
>
> Without digging through the code I can't be sure, but surely with 
> LPTSTR being a non-const type adding a conversion operator would be 
> dangerous at best.
>
> operator LPCTSTR() is of course a different beast entirely. That's 
> definitely there - I use it all the time.
>
> Or am I missing something? (possible - it's nearly midnight and I'm 
> about to crash).
>
> Kind Regards,
>
>                  Anna-Jayne Metcalfe
>                  Product Manager,
>                  Riverblade Limited
>
> http://www.riverblade.co.uk
>
> Riverblade Limited, 3 Wellington Road, Bournemouth, Dorset BH8 8JQ, 
> United Kingdom Registered in England no. 5187132. VAT Registration no. 
> 847 0045 38 Please direct general enquiries to 
> [email protected] <mailto:enquiries%40riverblade.co.uk>.
>
> ACCU 2012 - http://www.accu.org/conference - 24-28th April 2012, Oxford
UK.
>
> 


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