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#include <QCoreApplication>#include <QQmlEngine>#include <QQmlComponent>#include <QDebug>#include "birthdayparty.h"#include "person.h"int main(int argc,char** argv)
{
QCoreApplication app(argc, argv);
qmlRegisterType<BirthdayParty>("People",1,0,"BirthdayParty");
qmlRegisterType<Person>();
qmlRegisterType<Boy>("People",1,0,"Boy");
qmlRegisterType<Girl>("People",1,0,"Girl");
QQmlEngine engine;
QQmlComponent component(&engine,QUrl("qrc:example.qml"));
BirthdayParty *party = qobject_cast<BirthdayParty *>(component.create());
if (party && party->host()) {
qWarning() << party->host()->name() <<"is having a birthday!";
if (qobject_cast<Boy *>(party->host()))
qWarning() <<"He is inviting:";
elseqWarning() <<"She is inviting:";
for (int ii =0; ii < party->guestCount(); ++ii)
qWarning() <<" "<< party->guest(ii)->name();
} else {
qWarning() << component.errors();
}
return0;
}