//// File: main.cpp//// A small Qt example application written by Troll Tech.//// It displays a text in a window and quits when you click// the mouse in the window.//#include "hello.h"#include <qapp.h>/* The program starts here. It parses the command line and build a message string to be displayed by the Hello widget.*/intmain(intargc,char**argv){QApplicationa(argc,argv);QStrings;for(inti=1;i<argc;i++){s+=argv[i];if(i<argc-1)s+=" ";}if(s.isEmpty())s="Hello, World";Helloh(s);h.setCaption("Qt says hello");QObject::connect(&h,SIGNAL(clicked()),&a,SLOT(quit()));h.setFont(QFont("times",32,QFont::Bold));// default fonth.setBackgroundColor(white);// default bg colora.setMainWidget(&h);h.show();returna.exec();}