listbox_Resolver.cpp

#include <nana/gui.hpp>
#include <nana/gui/widgets/listbox.hpp>
#include <iostream>

struct person
{
    std::string name;
    bool         gender;
    unsigned     age;
};

nana::listbox::oresolver& operator << ( nana::listbox::oresolver& orr , const person& pr)
{
        orr << pr.name;
        orr << (pr.gender ?  ("Male") :  ("Female"));
        orr << pr.age;  
        return orr ;
}
std::ostream & operator << (std::ostream& orr , const person& pr)
{
        orr << pr.name;
        orr << (pr.gender ?  ("Male") :  ("Female"));
        orr << pr.age;
        return orr ;
}
nana::listbox::iresolver& operator >> ( nana::listbox::iresolver& orr , person& pr)
{
        orr >> pr.name;
        std::string gender;
        orr >> gender;
        pr.gender = gender ==  ("Male") ;
        orr >> pr.age;  
        return orr ;
}



int main()
{
        using namespace nana;

        form fm;
        listbox lb(fm, nana::rectangle(10, 10, 280, 120));

        auto cat = lb.at(0);
        if (cat.begin() == cat.end())
                std::wcout <<  ("true ");
        else            
                std::wcout <<  ("false ");

        std::wcout << "\n";

        lb.append_header( ("Name"), 100);
        lb.append_header( ("Gender"), 60);
        lb.append_header( ("Age"), 60);

        //lb.resolver(resolver()); //Pass the user defined resolver to the listbox

        person pr;
        pr.name =  ("Peter");
        pr.gender = true;
        pr.age = 10;
        lb.at(0).append (pr); //person to item. resolver::decode() is required

        person prr;
        lb.at(0).at(0).resolve_to( prr); //item to person. resolver::encode() is required
        std::cout << pr << "\n";
        std::cout << prr << "\n";
        fm.show();
        exec();
}