nana-doxy/html/index.html

#include <nana/gui.hpp>                  // always include this

#include <nana/gui/widgets/button.hpp>

#include <nana/gui/widgets/group.hpp>

#include <nana/gui/widgets/label.hpp>

#include <nana/gui/msgbox.hpp>


int main()

 {

     using namespace nana;


     form   fm ;                             // Our main window

     fm.caption("My first NANA demo");       // (with this title)

     place  fm_place{fm};                    // have automatic layout

     bool   really_quick{false};             // and a default behavior

     label  hello{fm,"Hello World"};         // We put a label on our window

     button btn  {fm,"Quit"};                // and a button

     btn.tooltip( "I will ask first");       // that show a tip upon mouse hover

     group  act  {fm, "Actions"};            // Add a group of "options"


     act.add_option("Quick quickly")         // and two options that control quick behavior

        .events().click([&]()   {   really_quick=true;

                                    btn.tooltip("Quick quickly");       });

     act.add_option("Ask first")

        .events().click([&]()   {   really_quick=false;

                                    btn.tooltip("I will ask first");    });

     btn.events().click([&]()               // now the button know how to respond

                  {

                    if (!really_quick)     // not really quick !

                    {

                        msgbox m(fm,"Our demo", msgbox::yes_no) ;

                        m.icon(m.icon_question);

                        m << "Are you sure you want to quick?";

                        auto response= m();

                        if (response != m.pick_yes) return;   // return to the demo

                    }

                    API::exit();           // or really quick

                  });


     act.radio_mode(true);                   // Set "radio mode" (only one option selected)


       // let divide fm into fields to holds the other controls.

       // for example, let split fm into two fields separated by a movable vertical barre.

     fm_place.div("vertical <label margin=10>|70% <actions>");

     fm_place["label"  ]<< hello << btn;        // and place the controls there

     fm_place["actions"]<< act ;

     fm_place.collocate();                      // and collocate all in place


     fm.show();

     exec();

 }