RE: TGFileContainer MultipleSelections

From: Fine, Valeri <>
Date: Sun, 26 Mar 2006 15:24:55 -0500

Hello Kerry,
Thank you very much for your prompt reply.

> Thanks for the info, I will try this.

Thank you. Let me know about any obstacle you may have met ASAP.

> Do you know if anyone has tried to use the Qt layer to try and communicate with a DB from ROOT?

I do not know about any experinec of using Db Qt pacakge from within Qt/Root env. I am forwarding your message to the dedicate list.

> but if I can use Qt it might be worth doing. Any thoughts? I hope it should work. I can imagine a few underwater stones and know how they might have been managed. But first, just try any Qt Db example the way the FileDialog macro shows. Let me know. You can use some other patterns to incorporate the Qt classes in the ROOT applications and versa verse See: If you would observe some strange "dead-lock" or "unusual bad connection performance" let me know. I'll provide you some fix. However, I hope it should work "as is". I am not certain because I did not investigate the issue deep enough yet.

> Thanks for your help and I'll let you know if I have any problems with the steps you have outlined. Thank you, I am lookind forward to hearing about your expereince and, of course, I anticipate your contribution (in form of the "Bug report" ast least :) soon. My best reagrds, Valeri


-----Original Message-----
From: Fine, Valeri [] Sent: Sun 3/26/2006 12:27 PM
To: Fine, Valeri; Ilka Antcheva; Lee, Kerry T. (JSC-SF)[UHCL]; Subject: RE: [ROOT] TGFileContainer MultipleSelections

 I am sorry, I missed to add the relevant ROOT macro.

 Assuming you have the standard ROOT installation with Qt  (for example at CERN)

  1. setup ROOT and QT environment. For example, at CERN "lxplus" you can execute the script

2. Make a local copy ."rootrc" file to turn on the Qt-layer

3. Copy the C++ ROOT macro

ifndef __CINT__

#  include <qfiledialog.h>
#  include <qstringlist.h>
#  include <qstring.h>

void FileDialog() {

// gSystem->AddIncludePath("-I$QTDIR/include"); // See:
  QStringList files = QFileDialog::getOpenFileNames ();  

  QStringList::Iterator it = files.begin();   while ( it != files.end() ) {

      printf ("Next file selected: %s\n", (const char *)(*it));


4. Start ROOT session and execute 2 ROOT command    

root [0] gSystem->AddIncludePath("-I$QTDIR/include"); root [1] .x FileDialog.C++

5. You should get the Qt widget

6. You should see the the of the selected file names

If you don't this maynave ment there is some bug to be fixed. Please file the ROOT bug report.

Either way your kind feedback would be appreciated a lot.

 Thank you, Hope this helps


From: Fine, Valeri
Sent: Sat 3/25/2006 12:21 PM
To: Ilka Antcheva; Lee, Kerry T. (JSC-SF)[UHCL]; Subject: RE: [ROOT] TGFileContainer MultipleSelections

My I remind people that there is the back door called Qt-layer

If you need "multiple selections" now you can use Qt class
(you should turn on the Qt layer using ".rootrc". resource file see
<x-excid://3E8A0000/uri:> page
As soon as ROOT TG provides the function you are seeking you may have replaced it back with the "TG" counterpart.

Hope this helps Valeri

From: Ilka Antcheva
Sent: Sat 3/25/2006 4:17 AM
To: Lee, Kerry T. (JSC-SF)[UHCL]; Subject: RE: [ROOT] TGFileContainer MultipleSelections

Hi Kerry,

This feature is not available yet in TGFileConaines but will come soon because of internal needs to have it. We will keep you informed.

Cheers, Ilka

From: on behalf of Lee, Kerry T. (JSC-SF)[UHCL] Sent: Sat 3/25/2006 12:36 AM


Subject: [ROOT] TGFileContainer MultipleSelections

Dear Rooters,

How do I allow for multiple selections via a mouse click within a TGFileContainer?


Kerry Received on Sun Mar 26 2006 - 22:31:09 MEST

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