Viadeo Twitter Google Bookmarks ! Facebook Digg del.icio.us MySpace Yahoo MyWeb Blinklist Netvouz Reddit Simpy StumbleUpon Bookmarks Windows Live Favorites 
Logo Documentation Qt ·  Page d'accueil  ·  Toutes les classes  ·  Toutes les fonctions  ·  Vues d'ensemble  · 

QNetworkAddressEntry Class Reference
[QtNetwork module]

The QNetworkAddressEntry class stores one IP address supported by a network interface, along with its associated netmask and broadcast address. More...

 #include <QNetworkAddressEntry>

This class is not part of the Qt GUI Framework Edition.

Note: All functions in this class are reentrant.

This class was introduced in Qt 4.2.

Public Functions

QNetworkAddressEntry ()
QNetworkAddressEntry ( const QNetworkAddressEntry & other )
~QNetworkAddressEntry ()
QHostAddress broadcast () const
QHostAddress ip () const
QHostAddress netmask () const
int prefixLength () const
void setBroadcast ( const QHostAddress & newBroadcast )
void setIp ( const QHostAddress & newIp )
void setNetmask ( const QHostAddress & newNetmask )
void setPrefixLength ( int length )
bool operator!= ( const QNetworkAddressEntry & other ) const
QNetworkAddressEntry & operator= ( const QNetworkAddressEntry & other )
bool operator== ( const QNetworkAddressEntry & other ) const

Detailed Description

The QNetworkAddressEntry class stores one IP address supported by a network interface, along with its associated netmask and broadcast address.

Each network interface can contain zero or more IP addresses, which in turn can be associated with a netmask and/or a broadcast address (depending on support from the operating system).

This class represents one such group.

Member Function Documentation

QNetworkAddressEntry::QNetworkAddressEntry ()

Constructs an empty QNetworkAddressEntry object.

QNetworkAddressEntry::QNetworkAddressEntry ( const QNetworkAddressEntry & other )

Constructs a QNetworkAddressEntry object that is a copy of the object other.

QNetworkAddressEntry::~QNetworkAddressEntry ()

Destroys this QNetworkAddressEntry object.

QHostAddress QNetworkAddressEntry::broadcast () const

Returns the broadcast address associated with the IPv4 address and netmask. It can usually be derived from those two by setting to 1 the bits of the IP address where the netmask contains a 0. (In other words, by bitwise-OR'ing the IP address with the inverse of the netmask)

This member is always empty for IPv6 addresses, since the concept of broadcast has been abandoned in that system in favor of multicast. In particular, the group of hosts corresponding to all the nodes in the local network can be reached by the "all-nodes" special multicast group (address FF02::1).

See also setBroadcast().

QHostAddress QNetworkAddressEntry::ip () const

This function returns one IPv4 or IPv6 address found, that was found in a network interface.

See also setIp().

QHostAddress QNetworkAddressEntry::netmask () const

Returns the netmask associated with the IP address. The netmask is expressed in the form of an IP address, such as 255.255.0.0.

For IPv6 addresses, the prefix length is converted to an address where the number of bits set to 1 is equal to the prefix length. For a prefix length of 64 bits (the most common value), the netmask will be expressed as a QHostAddress holding the address FFFF:FFFF:FFFF:FFFF::

See also setNetmask() and prefixLength().

int QNetworkAddressEntry::prefixLength () const

Returns the prefix length of this IP address. The prefix length matches the number of bits set to 1 in the netmask (see netmask()). For IPv4 addresses, the value is between 0 and 32. For IPv6 addresses, it's contained between 0 and 128 and is the preferred form of representing addresses.

This function returns -1 if the prefix length could not be determined (i.e., netmask() returns a null QHostAddress()).

This function was introduced in Qt 4.5.

See also setPrefixLength() and netmask().

void QNetworkAddressEntry::setBroadcast ( const QHostAddress & newBroadcast )

Sets the broadcast IP address of this QNetworkAddressEntry object to newBroadcast.

See also broadcast().

void QNetworkAddressEntry::setIp ( const QHostAddress & newIp )

Sets the IP address the QNetworkAddressEntry object contains to newIp.

See also ip().

void QNetworkAddressEntry::setNetmask ( const QHostAddress & newNetmask )

Sets the netmask that this QNetworkAddressEntry object contains to newNetmask. Setting the netmask also sets the prefix length to match the new netmask.

See also netmask() and setPrefixLength().

void QNetworkAddressEntry::setPrefixLength ( int length )

Sets the prefix length of this IP address to length. The value of length must be valid for this type of IP address: between 0 and 32 for IPv4 addresses, between 0 and 128 for IPv6 addresses. Setting to any invalid value is equivalent to setting to -1, which means "no prefix length".

Setting the prefix length also sets the netmask (see netmask()).

This function was introduced in Qt 4.5.

See also prefixLength() and setNetmask().

bool QNetworkAddressEntry::operator!= ( const QNetworkAddressEntry & other ) const

Returns true if this network address entry is different from other.

QNetworkAddressEntry & QNetworkAddressEntry::operator= ( const QNetworkAddressEntry & other )

Makes a copy of the QNetworkAddressEntry object other.

bool QNetworkAddressEntry::operator== ( const QNetworkAddressEntry & other ) const

Returns true if this network address entry is the same as other.
Publicité

Best Of

Actualités les plus lues

Semaine
Mois
Année
  1. Microsoft ouvre aux autres compilateurs C++ AMP, la spécification pour la conception d'applications parallèles C++ utilisant le GPU 22
  2. « Quelque chose ne va vraiment pas avec les développeurs "modernes" », un développeur à "l'ancienne" critique la multiplication des bibliothèques 38
  3. Les développeurs ignorent-ils trop les failles découvertes dans leur code ? Prenez-vous en compte les remarques des autres ? 17
  4. RIM : « 13 % des développeurs ont gagné plus de 100 000 $ sur l'AppWord », Qt et open-source au menu du BlackBerry DevCon Europe 0
  5. BlackBerry 10 : premières images du prochain OS de RIM qui devrait intégrer des widgets et des tuiles inspirées de Windows Phone 0
  6. Quelles nouveautés de C++11 Visual C++ doit-il rapidement intégrer ? Donnez-nous votre avis 10
  7. Adieu qmake, bienvenue qbs : Qt Building Suite, un outil déclaratif et extensible pour la compilation de projets Qt 17
Page suivante

Le Qt Quarterly au hasard

Logo

Le repérage des paires de parenthèses avec QSyntaxHighlighter

Qt Quarterly est la revue trimestrielle proposée par Nokia et à destination des développeurs Qt. Ces articles d'une grande qualité technique sont rédigés par des experts Qt. Lire l'article.

Communauté

Ressources

Liens utiles

Contact

  • Vous souhaitez rejoindre la rédaction ou proposer un tutoriel, une traduction, une question... ? Postez dans le forum Contribuez ou contactez-nous par MP ou par email (voir en bas de page).

Qt dans le magazine
Cette page est une traduction d'une page de la documentation de Qt, écrite par Nokia Corporation and/or its subsidiary(-ies). Les éventuels problèmes résultant d'une mauvaise traduction ne sont pas imputables à Nokia. Qt 4.6
Copyright © 2012 Developpez LLC. Tous droits réservés Developpez LLC. Aucune reproduction, même partielle, ne peut être faite de ce site et de l'ensemble de son contenu : textes, documents et images sans l'autorisation expresse de Developpez LLC. Sinon, vous encourez selon la loi jusqu'à 3 ans de prison et jusqu'à 300 000 E de dommages et intérêts. Cette page est déposée à la SACD.
Vous avez déniché une erreur ? Un bug ? Une redirection cassée ? Ou tout autre problème, quel qu'il soit ? Ou bien vous désirez participer à ce projet de traduction ? N'hésitez pas à nous contacter ou par MP !
 
 
Developpez.com

Nous contacter

Participez

Informations légales

 
Services

Forum Qt

Blogs

Hébergement

 
Partenaires

Hébergement Web