I have replaced the whole routine by the single statement
void Track::Plot_On_Screen(CellInfo this_cel[NUMBER_OF_PLANES][NUMBER_OF_WIRES])
{
TApplication theApp("Toep", 0, 0);
}
and I still get those errors. What should the parameters argc and argv be?
Ciao,
Maarten
On Wed, 19 Mar 1997, Fons Rademakers wrote:
> Hi Maarten,
>
> in your case just use:
> TApplication theApp("Toep", 0, 0);
>
> However, better do this once and for all in the main() program. Also
> never call
> delete on an object (delete &theApp). The object will be destructed
> automatically
> when leaving the routine.
>
> Cheers, Fons.
>
>
> Maarten Bruinsma wrote:
> >
> > Thanks (dank je wel) for your very quick reply. What you mentioned could
> > very well be the problem. I have created dummies for the command line
> > argument, as I haven't got a clue what to put ther below you will
> > find the routine in which I invoke the ROOT stuff
> >
> > void Track::Plot_On_Screen(CellInfo
> > this_cel[NUMBER_OF_PLANES][NUMBER_OF_WIRES]) /* plot circles and line */
> > {
> > int a=0;
> > char** p;
> > TLine *this_line;
> > TApplication theApp("Toep", &a, p);
> > TCanvas *c = new TCanvas("Picture", "The Alignment Geometry", 400, 400);
> > c->Show();
> > TEllipse* these_ellipses = new TEllipse[nr_of_hits];
> > for(a=0;a<nr_of_hits;a++)
> > {
> > these_ellipses[a]= TEllipse(hit[a].Z(), hit[a].Y(), hit[a].R(),
> > hit[a].Error_R());
> > these_ellipses[a].Draw();
> > }
> > this_line = new
> > TLine(Z_0,0,this_cel[8][7].Z(),(this_cel[8][7].Z()-Z_0)*tan(1.570796-phi));
> > /* max z zit bovenste mod. */
> > this_line->Draw(); /* nog herschalen */
> > c->Update();
> > getchar();
> > theApp.SetReturnFromRun();
> > theApp.Run();
> > delete &theApp;
> > }
> >
> > the purpose is to plot a track on screen and apart from mentioned error
> > will still need debugging probably.
> >
> > Thanks again and in advance.
> >
> > *************************************************************************
> > * Maarten Bruinsma *
> > * ----------------------- *
> > * Werk: Prive: *
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> > * 1009 DB AMSTERDAM *
> > * tel. (020) 5922116 email: t26@nikhef.nl *
> > * fax. (020) 5995155 http://www.nikhef.nl/user/t26/ *
> > *************************************************************************
>
> --
> Org: CERN, European Laboratory for Particle Physics.
> Mail: 1211 Geneve 23, Switzerland Phone: +41 22 7679248
> E-Mail: Fons.Rademakers@cern.ch Fax: +41 22 7822601
>