Re: [ROOT] TGListTree with a large number of items

From: Valeriy Onuchin (Valeri.Onoutchine@cern.ch)
Date: Wed Jul 17 2002 - 02:50:32 MEST


 Hi, it's so called as 32000 pix problem which exists in X11,
it's known how to be solved. I hope to fix it in next release.

Regards.         Valeriy.

++
 By the way recent modifications  of  TGListView/TGContainer allows
to put more than 100000 browsable items in the container with effective search .
I think this is the better alternative for putting  "folder" items into TGListTree.

Regards, Valeriy

++
   The  problem is identified and I' m working on it (should be solved soon)


----- Original Message ----- 
From: "Fons Rademakers" <Fons.Rademakers@cern.ch>
To: <gsalo@mrcstl.com>
Cc: <roottalk@pcroot.cern.ch>
Sent: Tuesday, July 16, 2002 6:19 PM
Subject: Re: [ROOT] TGListTree with a large number of items


> Hi Glen,
> 
>  this is a known and urgent problem. We have Valeriy Onuchin working on
> it.
> 
> Cheers, Fons.
> 
> 
> 
> On Tue, 2002-07-16 at 18:22, Glen R. Salo wrote:
> > Hi,
> > 
> > I am having a problem with TGListTree's as illustrated in the attached
> > file.  When the number of items is large (~10,000), I am unable to scroll
> > through the entire TGListTree.  Run the attached example and try to scroll
> > down the list using the vertical scroll bar.  My list stops at Element 167
> > whereas the last element is 9999.  If I scroll all the way to the bottom,
> > I see elements 0-167 again.
> > 
> > I am running ROOT v3.03.06 with CVS updates from July 3 under RedHat 7.3
> > linux.  To compile the attached, do:
> > 
> > g++ -o lttest lttest.cxx `root-config --cflags` `root-config --libs`
> > `root-config --glibs`
> > 
> > Thanks for the help,
> > 
> > Glen
> -- 
> Org:    CERN, European Laboratory for Particle Physics.
> Mail:   1211 Geneve 23, Switzerland
> E-Mail: Fons.Rademakers@cern.ch              Phone: +41 22 7679248
> WWW:    http://root.cern.ch/~rdm/            Fax:   +41 22 7679480
> 



This archive was generated by hypermail 2b29 : Sat Jan 04 2003 - 23:51:00 MET