CString concatenation

[Radu]

Hi GUys,

I am having a CString and append other CString to it by using the
+= operator. Normally that's ok but sometime the app crashes.
MSDN says:
"You should be aware that memory exceptions may occur whenever you use this concatenation operator because new storage may be allocated for characters added to this CString object. "

Ok, right. So how can I append a CString to another safely?

thanks

[GCDEF]

The chances that a CString += operation causing a crash are pretty close to zero. Unless your string are millions of characters long, I would suspect that if you're having problems the cause is somewhere else.

[Radu]

Yes it used to work fine. Now, when I'm debugging the app, sometimes I get an error at that location.
it is something like: (the aStr has the sufficient length so the delete is not the problem.

 
			aStr.Delete(0,8);	
			formatted += "     Bank:          ";
			formatted += aStr.Left(2);
			formatted += '\n'; 
 
			//bank
			aStr.Delete(0,2);
			formatted += "     Address:      ";
			formatted += aStr.Left(4);
			formatted += '\n';

			//length
			aStr.Delete(0,4);
			formatted += "     Length:        ";
			formatted += aStr.Left(4);
			formatted += '\n';

[GCDEF]

Looking at that code, the most like problem is that it's actually Left blowing up if aStr is too short.

Have you tried the debugger?

[Radu]

Thanks! I'll take a look at that.