string::operand+ usage problem (with WIN32 data types)

**Elysia** · 11-02-2008

Originally Posted by flashbaz-pi

But that's not last! I want this metMetin as an integer also. Is there any function to do this? Of course must be... But I couldn't find

boost::lexical_cast.

**flashbaz-pi** · 11-02-2008

Originally Posted by tabstop

Actually, reading this again, you've bollixed the call to GetWindowText; so that is what is crashing when you try to write to New Jersey, or wherever metMetin happens to be pointing. You must have actual space on the other end of the pointer metMetin (via malloc/new and friends) before calling the function.

I didn't understand what did you mean exactly. Where I will make this and how? I tried, I tried, I tried but couldn't use malloc :'(

**Elysia** · 11-02-2008

Originally Posted by flashbaz-pi

I didn't understand what did you mean exactly. Where I will make this and how? I tried, I tried, I tried but couldn't use malloc :'(

Code:

                    metKrkSys = GetWindowTextLength(hMet);
                    GetWindowText( hMet, metMetin, metKrkSys+1);

metMetin is a pointer and its allocated size is ... 0!
You must allocate space before using a pointer! http://cpwiki.sourceforge.net/Common...kes_and_errors
Do this with new, not malloc.
And then do not forget to free it.

Code:

metMetin = new char[hMet];
...
delete [] metMetin;

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