On Sun, 15 Mar 1998, Nick van Eijndhoven wrote:
> > class MyClass {
> >
> > private:
> >
> > TString *s;
> > ...
> >
> > public:
> >
> > char *GetData()
> > {
> > return( s->Data() );
> > {
> > ...
> > };
> >
> > Use it as:
> >
> > MyClass mcls;
> >
> > char *ch = mcls.GetData();
> >
> > Happy ROOTing
> >
> > Radovan
> >
> >
> >
> Hi Radovan,
> Since I need the TString contents in char* format in a member function
> of the same class (in which then I use the char* as an argument for the
> invokation of a member function of another class) the above construction
> should not be needed according to standard C++.
> So to me it seems we have some sort of CINT problem here.
TString.h contains the following prototype for its public method Data():
const char *Data() const { return fData; }
I think that you can call the GetData() method whereever you need to get
TString data in (char *) format. To be sure you get data from TString
in ( char * ) format the function GetData() may be rewritten as :
char *GetData()
{
return( StrDup( s->Data() );
}
In this case you get (char *) instead of (const char *) because StrDup()
is defined in TString.h as:
extern char *StrDup(const char *str); // duplicate str, free with delete []
So you can use the copy of TString data without worry
that you overwrite TString object data.
Hope this helps
Radovan
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