Hi Thomas,
fix now in cvs.
Cheers, Fons.
On Wed, 2003-10-22 at 20:10, Thomas Bretz wrote:
> Hi Fons,
>
> in principal yes... What I have is something like:
>
> main()
> {
> cout << (int)gROOT->IsBatch() << endl;
> TGApplication app;
> if (gROOT->IsBatch())
> gROOT->SetBatch(kFALSE);
> new MyTGMainFrame;
> app.Run();
> }
>
> The global TROOT object is already instantialted when I start this
> application (I don't kown why - you may no it better than me). If
> DISPLAY is not set correctly gROOT->IsBatch() returns 1 (because the
> constructor of TROOT initializes BATCH mode to 1 if DISPLAY is
> incorrect. But the constructor of TGApplication 'fixes' the DISPLAY
> variable - without resetting the BATCH-mode flag. Now I may have a valid
> connection to an X-Server but my application still assumes that we are
> running in BATCH mode.
>
> For me this behaviour is not clear...
>
> Best regards,
> Thomas.
>
> Fons Rademakers wrote:
> > Thomas,
> >
> > if the DISPLAY variable is incorrect set you now get the
> >
> > Error in <TGClient::TGClient>: can't open display "bla:0.0", bombing...
> >
> > message. Do I understand you want to switch to batch mode in case the
> > system could not connect to the X server?
> >
> > Cheers, Fons.
> >
> >
> > On Tue, 2003-10-21 at 14:24, Thomas Bretz wrote:
> >
> >>Hi,
> >>
> >>I found out, that if the DISPLAY variable is not correctly set my
> >>application crashes. Searching for the reason I realized, that in the
> >>main function gROOT is already set. From the constructor of the TROOT I
> >>learned, that Batch-mode is enabled if DISPLAY is not set. So I
> >>instantiate a TGApplication object afterwards, which sets the DISPLAY
> >>variable in case it is not yet set (calling gSystem->SetDisplay) before
> >>instantiating a TGClient object. Wouldn't it be a good idea to reset the
> >>batch mode in the case setting the display was successfull? Otherwise I
> >>have to reset it manually...
> >>
> >>Best regards,
> >>Thomas.
--
Org: CERN, European Laboratory for Particle Physics.
Mail: 1211 Geneve 23, Switzerland
E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248
WWW: http://www.rademakers.org/fons/ Fax: +41 22 7679480
This archive was generated by hypermail 2b29 : Thu Jan 01 2004 - 17:50:16 MET