QCheckBox - Check box with a text label

       #include <qcheckbox.h>

       Inherits QButton.

   Public Members
       QCheckBox ( QWidget * parent, const char * name=0 )
       QCheckBox ( const QString & text, QWidget * parent, const
           char * name=0 )
       bool isChecked () const
       void setChecked ( bool check )
       void setNoChange ()
       void setTristate ( bool y=TRUE )
       bool isTristate () const

   Important Inherited Members
       QString text () const
       virtual void setText ( const QString & text )
       QString text () const
       const QPixmap* pixmap () const
       virtual void setPixmap ( const QPixmap & pixmap )
       int accel () const
       virtual void setAccel ( int key )
       bool isToggleButton () const
       virtual void setDown ( bool enable )
       bool isDown () const
       bool isOn () const
       bool autoRepeat () const
       bool isExclusiveToggle () const
       QButtonGroup* group () const
       virtual void setAutoRepeat ( bool enable )
       void toggle ()
       void pressed ()
       void released ()
       void clicked ()
       void toggled ( bool on )
       void stateChanged ( int state )

   Properties
       Type   Name       READ         WRITE         Options
       -----------------------------------------------------
       bool   checked    isChecked    setChecked
       bool   tristate   isTristate   setTristate


DESCRIPTION

       The QCheckBox widget provides a check box with a text
       label.

       QCheckBox and QRadioButton are both option buttons. That
       is, they can be switched on (checked) or off (unchecked).

       restricted. Radio buttons define a "one of many" choice,
       while check-boxes provide "many of many" choices.

       While it is technically possible to implement radio-
       behaviour with check boxes and vice versa, it's strongly
       recommended to stick with the well-known semantics.
       Otherwise your users would be pretty confused.

       Use QButtonGroup to group check-buttons visually.

       Whenver a check box is checked or cleared, it emits the
       signal toggled(). Connect to this signal if you want to
       trigger an action each time the box changes state.
       Otherwise, use isChecked() to query whether or not a
       particular check box is selected.

       In addition to the usual checked and unchecked states,
       QCheckBox optionally provides a third state to indicate
       "no change". This is useful whenever you need to give the
       user the option of neither setting nor unsetting an
       option. If you need that third state, enable it with
       setTristate() and use state() to query the current toggle
       state. When a tristate box changes state, it emits the
       stateChanged() signal.

                            [Image Omitted]

                            [Image Omitted]

       See also QButton, QRadioButton and Fowler: Check Box.

       Examples: xform/xform.cpp i18n/main.cpp


MEMBER FUNCTION DOCUMENTATION


QCheckBox::QCheckBox ( QWidget * parent, const char * name=0 )

       Constructs a check box with no text.

       The parent and name arguments are sent to the QWidget
       constructor.


QCheckBox::QCheckBox ( const QString & text, QWidget * parent,

       const char * name=0 )
       Constructs a check box with a text.

       The parent and name arguments are sent to the QWidget
       constructor.


void QCheckBox::drawButton ( QPainter * paint ) [virtual

       protected]
       Reimplemented for internal reasons; the API is not
       affected.



void QCheckBox::drawButtonLabel ( QPainter * p ) [virtual

       protected]
       Reimplemented for internal reasons; the API is not
       affected.

       Reimplemented from QButton.


bool QCheckBox::isChecked () const

       Returns TRUE if the check box is checked, or FALSE if it
       is not checked.

       See also setChecked().

       Examples: xform/xform.cpp


bool QCheckBox::isTristate () const

       Returns TRUE if the checkbox is a tristate checkbox.
       Otherwise returns FALSE.

       See also setTristate().


void QCheckBox::resizeEvent ( QResizeEvent * ) [virtual

       protected]
       Reimplemented for internal reasons; the API is not
       affected.

       Reimplemented from QWidget.


void QCheckBox::setChecked ( bool check )

       Checks the check box if check is TRUE, or unchecks it if
       check is FALSE.

       See also isChecked().


void QCheckBox::setNoChange ()

       Sets the checkbox into the "no change" state.

       See also setTristate().


void QCheckBox::setTristate ( bool y=TRUE )

       Makes the check box a tristate check box if y is TRUE. A
       tristate check box provides an additional state NoChange.

       Use tristate check boxes whenever you need to give the
       user the option of neither setting nor unsetting an
       option. A typical example is the "Italic" check box in the
       font dialog of a word processor when the marked text is
       partially Italic and partially not.

       See also isTristate(), setNoChange(), stateChanged() and
       state().

       Reimplemented for internal reasons; the API is not
       affected.

       Reimplemented from QWidget.


QSizePolicy QCheckBox::sizePolicy () const [virtual]

       Reimplemented for internal reasons; the API is not
       affected.

       Reimplemented from QWidget.


void QCheckBox::updateMask () [virtual protected]

       Reimplemented for internal reasons; the API is not
       affected.

       Reimplemented from QWidget.


SEE ALSO

       http://doc.trolltech.com/qcheckbox.html
       http://www.trolltech.com/faq/tech.html


COPYRIGHT

       Copyright 1992-2001 Trolltech AS,
       http://www.trolltech.com.  See the license file included
       in the distribution for a complete license statement.


AUTHOR

       Generated automatically from the source code.


BUGS

       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.  Good bug reports
       make our job much simpler. Thank you.

       In case of content or formattting problems with this
       manual page, please report them to qt-bugs@trolltech.com.
       Please include the name of the manual page (qcheckbox.3qt)
       and the Qt version (2.3.1).


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