Re: TString question

From: Nick van Eijndhoven (Nick@fys.ruu.nl)
Date: Sun Mar 15 1998 - 16:09:52 MET


*** Radovan Chytracek wrote :
> 
> On Sun, 15 Mar 1998, Nick van Eijndhoven wrote:
> 
> >  char* ch;
> >  TString* s=new TString("small_test");
> >  ch=(char*)s->GetContents();
> Try the following:
> 
> char *ch;
> TString* s = new TString("small_test");
> ch         = s->Data();
> 
> or
> 
> ch         = StrDup(s->Data());
> 
> Happy ROOTing
>                 Radovan
> 
> 
> 
Hi Radovan,
Thanks for your quick reply.
Indeed I tried also :

 TString* s; // In the private area of my class

 s = new TString("small_test"); // In one of the initialisation 
                                // member functions

 char* ch=s->Data(); // In another member function.

However, the last statement gives me an error message in ROOT

"illegal pointer to class object".

I also tried : char* ch=(char*)s->Data();
               char* ch=(const char*)s->Data();

but nothing worked.

Note that I have a small macro test.cc in which I create an object
of my class, through which the above statements are invoked via the
various member functions.

The strange thing however is that when I type the above statements in
by hand in my ROOT session, everyrhing looks o.k.
Has someone any idea ?

 
                                              Cheers,

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