|
|
              
Q3ButtonGroup Class Reference |
| Q3ButtonGroup ( QWidget * parent = 0, const char * name = 0 ) | |
| Q3ButtonGroup ( const QString & title, QWidget * parent = 0, const char * name = 0 ) | |
| Q3ButtonGroup ( int strips, Qt::Orientation orientation, QWidget * parent = 0, const char * name = 0 ) | |
| Q3ButtonGroup ( int strips, Qt::Orientation orientation, const QString & title, QWidget * parent = 0, const char * name = 0 ) | |
| ~Q3ButtonGroup () | |
| int | count () const |
| QAbstractButton * | find ( int id ) const |
| int | id ( QAbstractButton * button ) const |
| int | insert ( QAbstractButton * button, int id = -1 ) |
| bool | isExclusive () const |
| bool | isRadioButtonExclusive () const |
| void | remove ( QAbstractButton * button ) |
| QAbstractButton * | selected () const |
| int | selectedId () const |
| void | setButton ( int id ) |
| void | setExclusive ( bool ) |
| void | setRadioButtonExclusive ( bool ) |
- 22 public functions inherited from Q3GroupBox
- 10 public functions inherited from QGroupBox
- 217 public functions inherited from QWidget
- 29 public functions inherited from QObject
- 13 public functions inherited from QPaintDevice
Signals
| void | clicked ( int id ) |
| void | pressed ( int id ) |
| void | released ( int id ) |
Reimplemented Protected Functions
| virtual bool | event ( QEvent * e ) |
- 4 protected functions inherited from Q3GroupBox
- 10 protected functions inherited from QGroupBox
- 37 protected functions inherited from QWidget
- 7 protected functions inherited from QObject
- 1 protected function inherited from QPaintDevice
Additional Inherited Members
- 1 public slot inherited from QGroupBox
- 19 public slots inherited from QWidget
- 1 public slot inherited from QObject
- 4 static public members inherited from QWidget
- 5 static public members inherited from QObject
- 4 protected functions inherited from Q3GroupBox
- 10 protected functions inherited from QGroupBox
- 37 protected functions inherited from QWidget
- 7 protected functions inherited from QObject
- 1 protected function inherited from QPaintDevice
- 1 protected slot inherited from QWidget
Detailed Description
The Q3ButtonGroup widget organizes QAbstractButton widgets in a group.
A button group widget makes it easier to deal with groups of buttons. Each button in a button group has a unique identifier. The button group emits a clicked() signal with this identifier when a button in the group is clicked. This makes a button group particularly useful when you have several similar buttons and want to connect all their clicked() signals to a single slot.
An exclusive button group switches off all toggle buttons except the one that was clicked. A button group is, by default, non-exclusive. Note that all radio buttons that are inserted into a button group are mutually exclusive even if the button group is non-exclusive. (See setRadioButtonExclusive().)
There are two ways of using a button group:
- The button group is the parent widget of a number of buttons, i.e. the button group is the parent argument in the button constructor. The buttons are assigned identifiers 0, 1, 2, etc., in the order they are created. A Q3ButtonGroup can display a frame and a title because it inherits Q3GroupBox.
- The button group is an invisible widget and the contained buttons have some other parent widget. In this usage, each button must be manually inserted, using insert(), into the button group and given an identifier.
A button can be removed from the group with remove(). A pointer to a button with a given id can be obtained using find(). The id of a button is available using id(). A button can be set on with setButton(). The number of buttons in the group is returned by count().
See also QPushButton, QCheckBox, and QRadioButton.
Property Documentation
exclusive : bool
This property holds whether the button group is exclusive.
If this property is true, then the buttons in the group are toggled, and to untoggle a button you must click on another button in the group. The default value is false.
Access functions:
| bool | isExclusive () const |
| void | setExclusive ( bool ) |
radioButtonExclusive : bool
This property holds whether the radio buttons in the group are exclusive.
If this property is true (the default), the radio buttons in the group are treated exclusively.
Access functions:
| bool | isRadioButtonExclusive () const |
| void | setRadioButtonExclusive ( bool ) |
selectedId : int
This property holds the id of the selected toggle button.
If no toggle button is selected, id() returns -1.
If setButton() is called on an exclusive group, the button with the given id will be set to on and all the others will be set to off.
Access functions:
| int | selectedId () const |
| void | setButton ( int id ) |
See also selected().
Member Function Documentation
Q3ButtonGroup::Q3ButtonGroup ( QWidget * parent = 0, const char * name = 0 )
Constructs a button group with no title.
The parent and name arguments are passed to the QWidget constructor.
Q3ButtonGroup::Q3ButtonGroup ( const QString & title, QWidget * parent = 0, const char * name = 0 )
Constructs a button group with the title title.
The parent and name arguments are passed to the QWidget constructor.
Q3ButtonGroup::Q3ButtonGroup ( int strips, Qt::Orientation orientation, QWidget * parent = 0, const char * name = 0 )
Constructs a button group with no title. Child widgets will be arranged in strips rows or columns (depending on orientation).
The parent and name arguments are passed to the QWidget constructor.
Q3ButtonGroup::Q3ButtonGroup ( int strips, Qt::Orientation orientation, const QString & title, QWidget * parent = 0, const char * name = 0 )
Constructs a button group with title title. Child widgets will be arranged in strips rows or columns (depending on orientation).
The parent and name arguments are passed to the QWidget constructor.
Q3ButtonGroup::~Q3ButtonGroup ()
Destructor.
void Q3ButtonGroup::clicked ( int id ) [signal]
This signal is emitted when a button in the group is clicked. The id argument is the button's identifier.
See also insert().
int Q3ButtonGroup::count () const
Returns the number of buttons in the group.
bool Q3ButtonGroup::event ( QEvent * e ) [virtual protected]
Reimplemented from QObject::event().
QAbstractButton * Q3ButtonGroup::find ( int id ) const
Returns the button with the specified identifier id, or 0 if the button was not found.
int Q3ButtonGroup::id ( QAbstractButton * button ) const
Returns the id of button, or -1 if button is not a member of this group.
See also selectedId().
int Q3ButtonGroup::insert ( QAbstractButton * button, int id = -1 )
Inserts the button with the identifier id into the button group. Returns the button identifier.
Buttons are normally inserted into a button group automatically by passing the button group as the parent when the button is constructed. So it is not necessary to manually insert buttons that have this button group as their parent widget. An exception is when you want custom identifiers instead of the default 0, 1, 2, etc., or if you want the buttons to have some other parent.
The button is assigned the identifier id or an automatically generated identifier. It works as follows: If id >= 0, this identifier is assigned. If id == -1 (default), the identifier is equal to the number of buttons in the group. If id is any other negative integer, for instance -2, a unique identifier (negative integer <= -2) is generated. No button has an id of -1.
See also find(), remove(), and setExclusive().
void Q3ButtonGroup::pressed ( int id ) [signal]
This signal is emitted when a button in the group is pressed. The id argument is the button's identifier.
See also insert().
void Q3ButtonGroup::released ( int id ) [signal]
This signal is emitted when a button in the group is released. The id argument is the button's identifier.
See also insert().
void Q3ButtonGroup::remove ( QAbstractButton * button )
Removes the button from the button group.
See also insert().
QAbstractButton * Q3ButtonGroup::selected () const
Returns the selected toggle button if exactly one is selected; otherwise returns 0.
See also selectedId().
|
|
Best Of
Actualités les plus lues
- Pourquoi les programmeurs sont-ils moins payés que les gestionnaires de programmes ? Manquent-ils de pouvoir de négociation ? 42
- Qt Commercial : Digia organise un webinar gratuit le 27 mars sur la conception d'interfaces utilisateur et d'applications avec le framework 0
- Interfaces mobiles : nouveaux usages, nouvelles ergonomies, par Miratech 0
- Implémentation d'une table de hachage à référence faible avec Qt, un article de Christophe Dumez traduit par Thibaut Cuvelier 4
- PySide devient un add-on Qt et rejoint le Qt Project et le modèle d'open gouvernance 0
- « Quelque chose ne va vraiment pas avec les développeurs "modernes" », un développeur à "l'ancienne" critique la multiplication des bibliothèques 94
- Apercevoir la troisième dimension ou l'utilisation multithreadée d'OpenGL dans Qt, un article des Qt Quarterly traduit par Guillaume Belz 0
- Les développeurs ignorent-ils trop les failles découvertes dans leur code ? Prenez-vous en compte les remarques des autres ? 17
- Pourquoi les programmeurs sont-ils moins payés que les gestionnaires de programmes ? Manquent-ils de pouvoir de négociation ? 42
- Quelles nouveautés de C++11 Visual C++ doit-il rapidement intégrer ? Donnez-nous votre avis 10
- Adieu qmake, bienvenue qbs : Qt Building Suite, un outil déclaratif et extensible pour la compilation de projets Qt 17
- 2017 : un quinquennat pour une nouvelle version du C++ ? Possible, selon Herb Sutter 9
- Linus Torvalds : le "C++ est un langage horrible", en justifiant le choix du C pour le système de gestion de version Git 100
- Comment prendre en compte l'utilisateur dans vos applications ? Pour un développeur, « 90 % des utilisateurs sont des idiots » 229
- Quel est LE livre que tout développeur doit lire absolument ? Celui qui vous a le plus marqué et inspiré 96
- Apple cède et s'engage à payer des droits à Nokia, le conflit des brevets entre les deux firmes s'achève 158
- Nokia porte à nouveau plainte contre Apple pour violation de sept nouveaux brevets 158
- Quel est le code dont vous êtes le plus fier ? Pourquoi l'avez-vous écrit ? Et pourquoi vous a-t-il donné autant de satisfaction ? 83
- Le Draft final de la norme C++ 0X validé 181
Le Qt Labs au hasard
Peek et Poke
Communauté
Ressources
- 91 cours et tutoriels Qt
- F.A.Q. Qt : 200 questions et réponses
- 48 Qt Quarterly, 35 Qt Labs et 22 Qt DevNet en français
- 43 outils Qt
- 99 sources Qt
- 26 binaires Qt
- 6 livres Qt et 9 critiques
- La documentation de Qt 4.7 en français : 157 classes, 70 concepts et 24 modules
- 3 certifications Qt
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-snapshot | |
| 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 ! | ||
Copyright © 2000-2012 - www.developpez.com