How to underline a symbol in Root?

ROOT
1

Dear Root Experts,

In naming histograms I am using a notation in which some of the symbols are underlined.

In LaTeX there is a simple command \underline to accomplish this goal:

\documentclass[12pt]{article}
\begin{document}
$\underline{a}$
\end{document}

but as far as I could conclude from the documentation of TLatex this command is not supported in Root.

Is there an alternative way to underline symbol in Root?

Thanks,
Ante

2

Yes you are right, you can put a bar above a character (#bar{}) but not below.
To be done.
If you want to underline a full word may be a TLine can make it ?

3

With Qt-plugin “on”, one can add any Qt widget on the top of the TCanvas.
For example, to add QLabel (see: doc.trolltech.com/4.5/qlabel.html#details ),

  1. Create a simple function, “addLabel.C”[code]#ifndef CINT

include “QtGui/QWidget”

include “QtGui/QLabel”

include “TQtUtil.h”

include “TCanvas.h”

using namespace TQtUtil;
#endif
void addLabel(TCanvas *c)
{
#ifndef CINT
QWidget *w = canvasWidget©;
QLabel *l = new QLabel(w); // create QLabel with TCanvas as its parent
l->setText(“Hello Qt Label!!”);
l->move(100,100); // set the label location in TPad pixel coordinates
l->resize(140,40); // set the label size ( pixels )
l->show(); // Show the label on the top of the TCanvas
w->update(); // Update TCanvas
#endif
}[/code];
2. Start ROOT with Qt-layer “on” and type:

root[0] gSystem->AddIncludePath("-I$QTDIR/include"); root[1] gSystem->AddIncludePath("-I$QTDIR/include/QtCore -I$QTDIR/include/QtGui"); root[2] .L addLabel.C+ root[3] .x $ROOTSYS/tutorials/hsimple.C root[4] addLabel(gPad); to get the picture attached.

CanvasAndQLabel.png687×525 18.2 KB