{
"cells": [
{
"cell_type": "markdown",
"id": "ea3d4206",
"metadata": {},
"source": [
"# demoshelp\n",
"Display demo help.\n",
"\n",
"\n",
"\n",
"\n",
"**Author:** Wim Lavrijsen \n",
"This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, May 19, 2026 at 08:11 PM."
]
},
{
"cell_type": "code",
"execution_count": 1,
"id": "c5824f22",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:11:37.523203Z",
"iopub.status.busy": "2026-05-19T20:11:37.523070Z",
"iopub.status.idle": "2026-05-19T20:11:38.630954Z",
"shell.execute_reply": "2026-05-19T20:11:38.630252Z"
}
},
"outputs": [
{
"data": {
"text/html": [
"\n",
"\n",
"\n",
"
\n",
"\n",
"\n",
"\n"
],
"text/plain": [
""
]
},
"metadata": {},
"output_type": "display_data"
}
],
"source": [
"import os\n",
"from ROOT import TCanvas, TPaveText\n",
"from ROOT import gROOT\n",
"\n",
"\n",
"\n",
"chelp = TCanvas( 'chelp', 'Help to run demos', 200, 10, 700, 500 )\n",
"\n",
"welcome = TPaveText( .1, .8, .9, .97 )\n",
"welcome.AddText( 'Welcome to the ROOT demos' )\n",
"welcome.SetTextFont( 32 )\n",
"welcome.SetTextColor( 4 )\n",
"welcome.SetFillColor( 24 )\n",
"welcome.Draw()\n",
"\n",
"hdemo = TPaveText( .05, .05, .95, .7 )\n",
"hdemo.SetTextAlign( 12 )\n",
"hdemo.SetTextFont( 52 )\n",
"\n",
"text = \"\"\"- Run demo hsimple.py first. Then in any order\n",
"- Click left mouse button to execute one demo\n",
"- Click right mouse button to see the title of the demo\n",
"- Click on 'Close Bar' to exit from the demo menu\n",
"- Select 'File/Print' to print a Postscript view of the canvas\n",
"- You can execute a demo with the mouse or type commands\n",
"- During the demo (try on this canvas) you can:\n",
" .... Use left button to move/grow/etc objects\n",
" .... Use middle button to pop overlapping objects\n",
" .... Use right button to get an object sensitive pop-up\n",
" \"\"\"\n",
"for line in text.split( os.linesep ):\n",
" hdemo.AddText( line )\n",
"\n",
"hdemo.SetAllWith( '....', 'color', 2 )\n",
"hdemo.SetAllWith( '....', 'font', 72 )\n",
"hdemo.SetAllWith( '....', 'size', 0.04 )\n",
"\n",
"hdemo.Draw()\n",
"chelp.Update()"
]
},
{
"cell_type": "markdown",
"id": "4eeeb019",
"metadata": {},
"source": [
"Draw all canvases "
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "ef16bd1b",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:11:38.632630Z",
"iopub.status.busy": "2026-05-19T20:11:38.632489Z",
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"shell.execute_reply": "2026-05-19T20:11:38.756908Z"
}
},
"outputs": [
{
"data": {
"text/html": [
"\n",
"\n",
"\n",
"
\n",
"\n",
"\n",
"\n"
],
"text/plain": [
""
]
},
"metadata": {},
"output_type": "display_data"
}
],
"source": [
"from ROOT import gROOT \n",
"gROOT.GetListOfCanvases().Draw()"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.12.12"
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"nbformat": 4,
"nbformat_minor": 5
}