#include <Wt/WApplication>
#include <Wt/WStandardItem>
#include <Wt/WStandardItemModel>
#include <boost/any.hpp>

 #include <iostream>

using namespace Wt;
using namespace std;

int main() {
    WStandardItem *item;
    item = new WStandardItem();
    item->setFlags(ItemIsUserCheckable|ItemIsTristate);
    item->setCheckState(Wt::Unchecked);
    cout << ((item->data(CheckStateRole).type() == typeid(CheckState))?"ture":"false" )<< endl;
    cout << " type = " << item->data(CheckStateRole).type().name() << endl;

    delete item;
    item = new WStandardItem();
    item->setFlags(ItemIsUserCheckable|ItemIsTristate);
    item->setData(Unchecked,CheckStateRole);
    cout << " type = " << item->data(CheckStateRole).type().name() << endl;

    delete item;
    item = new WStandardItem();
    item->setFlags(ItemIsUserCheckable|ItemIsTristate);
    item->setCheckState(PartiallyChecked);
    cout << " type = " << item->data(CheckStateRole).type().name() << endl;

    delete item;
    item = new WStandardItem();
    item->setFlags(ItemIsUserCheckable|ItemIsTristate);
    item->setCheckState(Checked);
    cout << " type = " << item->data(CheckStateRole).type().name() << endl;

    delete item;
    item = new WStandardItem();
    item->setFlags(ItemIsUserCheckable|ItemIsTristate);
    item->setCheckState(Unchecked);
    item->setCheckState(PartiallyChecked);
    item->setCheckState(Unchecked);
    cout << " type = " << item->data(CheckStateRole).type().name() << endl;

    delete item;
    item = new WStandardItem();
    item->setFlags(ItemIsUserCheckable|ItemIsTristate);
    item->setCheckState(Unchecked);
    item->setCheckState(Checked);
    item->setCheckState(Unchecked);
    cout << " type = " << item->data(CheckStateRole).type().name() << endl;
}