Re: [ROOT] Macro trouble

From: Rene Brun (Rene.Brun@cern.ch)
Date: Thu Jun 13 2002 - 16:30:31 MEST


John,

TFile::Get reads the object from disk into memory and returns you
a pointer to the created object.

Rene Brun

On Thu, 13 Jun 2002, Frankland John wrote:

> Ooops!
> Thanks a lot, that works a lot better... as long as you delete the 
> histograms after doing
> an "Update" of the canvas, otherwise you don't see anyhing at all.
> So I guess the lesson is that the TFile::Get(char *) method doesn't just 
> send back a pointer
> to the desired object, but a pointer to a copy of the object for which 
> it allocated some memory.
> I was probably supposed to know that, wasn't I ? :-[
> Thanks again
> John
> 
> -- 
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