Archived:How to add submenu in Qt

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16 Sep
2009

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Qt Quick should be used for all UI development on mobile devices. The approach described in this article (based on QWidget) is deprecated.

Article Metadata

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Code Example

Source file: Media:QtSubMenu.zip

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Tested with

Devices(s): Nokia 5800 XpressMusic

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Compatibility

Platform(s): S60 3rd Edition, FP1, FP2
S60 5th Edition

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Platform Security

Signing Required: Self-Signed

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Article

Keywords: QMenu

Created: savaj (15 Jun 2009)

Last edited: hamishwillee (11 Oct 2012)

Overview

This code snippet shows how to create sub-menu in Qt. For more information see Qt Menus

We need to call QMenu::addMenu() method to add submenu in existing menu item.

Headers files

#ifndef SUBMENU_H
#define SUBMENU_H
 
#include <QtGui/QMainWindow>
#include "ui_SubMenu.h"
 
class SubMenu : public QMainWindow
{
    Q_OBJECT
 
public:
	SubMenu(QWidget *parent = 0);
    ~SubMenu();
 
private slots:
    void wikiForumNokia();
    void DiBoForumNokia();
    void nokiaIndia();
    void nokiaEurope();
    void help();
    void about();
 
 
private:
    void createMyMenus();
 
private:
    Ui::SubMenuClass ui;
 
    QMenu *nokiaMenu;
    QMenu *forumNokiaMenu;
 
    QAction *menu_nokiaIndiaAction;
    QAction *menu_nokiaEuropeAction;
    QAction *menu_wikiAction;
    QAction *menu_DiBoAction;
    QAction *menu_aboutAction;
    QAction *menu_helpAction;
    QAction *menu_exitAction;
};
 
#endif // SUBMENU_H

Source

#include "SubMenu.h"
#include <QMenu>
#include <QMessageBox>
#include <QDesktopServices>
#include <QUrl>
 
SubMenu::SubMenu(QWidget *parent)
    : QMainWindow(parent)
{
	ui.setupUi(this);
	setWindowTitle(tr("Sub Menus"));
	//Create memu and sub menu.
	createMyMenus();
}
 
void SubMenu::createMyMenus()
{	
 
	//add action for help menu.
	menu_helpAction = new QAction(tr("Help"), this);
	menuBar()->addAction(menu_helpAction);
	connect(menu_helpAction, SIGNAL(triggered()), this, SLOT(help()));
 
	//add action for about menu.
	menu_aboutAction = new QAction(tr("About"), this);
	menuBar()->addAction(menu_aboutAction);
	connect(menu_aboutAction, SIGNAL(triggered()), this, SLOT(about()));
 
	/* for nokia menu and its sub menus. */
	//create action Nokia India sub menu item.
	menu_nokiaIndiaAction = new QAction(tr("Nokia India"), this);
        connect(menu_nokiaIndiaAction, SIGNAL(triggered()), this, SLOT(nokiaIndia()));
 
        //create action Nokia Europe sum menu item
        menu_nokiaEuropeAction = new QAction(tr("Nokia Europe"), this);
	connect(menu_nokiaEuropeAction, SIGNAL(triggered()), this, SLOT(nokiaIndia()));
 
	//add menu item nokia to main menu
	nokiaMenu = menuBar()->addMenu(tr("Nokia"));
	//add action for nokia india sub-menu
	nokiaMenu->addAction(menu_nokiaIndiaAction);
	//add action for nokia india sub-menu
	nokiaMenu->addAction(menu_nokiaEuropeAction);
 
	//create action for Discussion Boards sub menu item
	menu_DiBoAction = new QAction(tr("Discussion Boards"), this);
        connect(menu_DiBoAction, SIGNAL(triggered()), this, SLOT(DiBoForumNokia()));
 
       //create action for Wiki sub menu item
        menu_wikiAction = new QAction(tr("Wiki"), this);
	connect(menu_wikiAction, SIGNAL(triggered()), this, SLOT(wikiForumNokia()));
 
	//add menu item Nokia Developer to menu item nokia
	forumNokiaMenu = nokiaMenu->addMenu(tr("Nokia Developer"));
	//add action for Discussion Boards sub-menu
	forumNokiaMenu->addAction(menu_DiBoAction);
	//add action for Wiki sub-menu
	forumNokiaMenu->addAction(menu_wikiAction);
 
	//Add action for exit menu.
	menu_exitAction = new QAction(tr("Exit"), this);
	menuBar()->addAction(menu_exitAction);
	connect(menu_exitAction, SIGNAL(triggered()), this, SLOT(close()));
 
 
}
 
/* handle action for wiki sub-menu item. */
void SubMenu::wikiForumNokia()
{
	QDesktopServices::openUrl(QUrl(tr("http://www.developer.nokia.com/Community/Wiki/Wiki_Home")));
}
 
/* handle action for Discussion Boards sub-menu item. */
void SubMenu::DiBoForumNokia()
{
	QDesktopServices::openUrl(QUrl(tr("http://www.developer.nokia.com/Community/Discussion/")));
}
 
/* handle action for nokia india sub-menu item. */
void SubMenu::nokiaIndia()
{
	QDesktopServices::openUrl(QUrl(tr("http://www.nokia.co.in/")));
}
 
/* handle action for nokia europe sub-menu item. */
void SubMenu::nokiaEurope()
{
	QDesktopServices::openUrl(QUrl(tr("http://europe.nokia.com/home")));
}
 
/* handle action for help menu item. */
void SubMenu::help()
{
	QMessageBox::information(this, tr("Help Menu"),tr("This example shows how to create submenu."));
}
 
/* handle action for about menu item. */
void SubMenu::about()
{
	QMessageBox::about(this, tr("About Menu"),tr("Testing Sub-Menus."));
}
 
 
SubMenu::~SubMenu()
{
 
}

Postconditions

The code snippet is expected to show sum-menus in application.

See also

• Qt Menus
• Archived:How to create a menu in Qt
• Archived:Qt Dynamic Menus

Code Example

• File:QtSubMenu.zip will show sub-menu in application and is tested on Nokia 5800 XpressMusic.