Wt

Hi guys,

Recently I've been working on a word reciter project. I made the decision to use Wt but it brought me a lot of trouble. Please help me. Thanks.

My main codes are below:

main.cpp:

@

#include

#include

#include

#include

#include

#include

#include <boost/version.hpp>

#include "wordreciter.h"

//using namespace Wt;

/*

• The env argument contains information about the new session, and
• the initial request. It must be passed to the WApplication
• constructor so it is typically also an argument for your custom
• application constructor.
  */

WApplication *createApplication(const WEnvironment& env)

{

/*

• You could read information from the environment to decide whether
  
• the user has permission to start a new application
  */
  return new WordReciter(env);

}

int main(int argc, char **argv)

{

/*

• Your main method may set up some shared resources, but should then
  
• start the server application (FastCGI or httpd) that starts listening
  
• for requests, and handles all of the application life cycles.
  
• The last argument to WRun specifies the function that will instantiate
  
• new application objects. That function is executed when a new user surfs
  
• to the Wt application, and after the library has negotiated browser
  
• support. The function should return a newly instantiated application
  
• object.
  */
  return WRun(argc, argv, &createApplication);
  }@

WordReciter.h & WordReciter.cpp:

@#ifndef WORDRECITER_H

#define WORDRECITER_H

#include

#include

#include

#include

#include

using namespace Wt;

#include "wtdialog.h"

#include

using namespace std;

class WordReciter : public WApplication

{

public:

WordReciter(const WEnvironment& env);

private:

WtDialog *dialog;

};

#endif // WORDRECITER_H

#include

#include "wordreciter.h"

WordReciter::WordReciter(const WEnvironment& env)

: WApplication(env)

{

setTitle("Word Reciter");

this->useStyleSheet("wr.css");

dialog = new WtDialog();

root()->addWidget(dialog);

}@

WtDialog.h & WtDialog.cpp:

@

#ifndef WTDIALOG_H

#define WTDIALOG_H

#include

#include

#include

using namespace Wt;

class WtDialog : public WContainerWidget

{

public:

WtDialog();

private:

WMenu *menu;

WStackedWidget *contents;

};

#endif // WTDIALOG_H

#include "wtdialog.h"

#include "introwidget.h"

#include "loginwidget.h"

#include "registerwidget.h"

#include "trainingwidget.h"

#include "leakagewidget.h"

#include

WtDialog::WtDialog()

{

contents = new WStackedWidget();

menu = new WMenu(contents, Wt::Vertical);

this->addWidget(menu);

this->addWidget(contents);

IntroWidget *introWidget = new IntroWidget();

LoginWidget *loginWidget = new LoginWidget();

TrainingWidget *trainingWidget = new TrainingWidget();

RegisterWidget *registerWidget = new RegisterWidget();

LeakageWidget *leakageWidget = new LeakageWidget();

//add items using the default lazy loading policy

menu->addItem("Introduction", introWidget, WMenuItem::LazyLoading);

menu->addItem("Register", registerWidget, WMenuItem::LazyLoading);

menu->addItem("Login", loginWidget, WMenuItem::LazyLoading);

menu->addItem("Training", trainingWidget, WMenuItem::LazyLoading);

menu->addItem("Leakage", leakageWidget, WMenuItem::LazyLoading);

menu->select(3);

}@

As you can see from WtDialog.h & WtDialog.cpp, I deleloped a widget for each page, like "introduction" page, "register" page and "login" page.

You can see every page for a widget:

#include "introwidget.h"

#include "loginwidget.h"

#include "registerwidget.h"

#include "trainingwidget.h"

#include "leakagewidget.h"

And then I use WMenu and WStackedWidget to orgnize these pages (or widgets).

My questions are below:

1.For example if I want to go to trainingwidget page form now loginwidget page , what should I do?

I know that WMenu has a member function select(), but I need to get the instance of WMenu, How can I get it to solve my problem. Or maybe you see what a foolish thing I did, please point it out for me, thanks so so much.

2.If I want to do something when the WMenu's selected Item changed, what should I do?

Thanks for your patience. :)