.. include:: headings.inc



.. _CheckBox:

==========================================================================================================================================
|phoenix_title|  **CheckBox**
==========================================================================================================================================

A checkbox is a labelled box which by default is either on (checkmark is visible) or off (no checkmark).          

Optionally (when the ``CHK_3STATE`` style flag is set) it can have a third state, called the mixed or undetermined state. Often this is used as a "Does Not Apply" state. 





.. _CheckBox-styles:

|styles| Window Styles
================================

This class supports the following styles: 

- ``CHK_2STATE``: Create a 2-state checkbox. This is the default.  
- ``CHK_3STATE``: Create a 3-state checkbox. Not implemented in OS2 and wxGTK built against GTK+ 1.2.  
- ``CHK_ALLOW_3RD_STATE_FOR_USER``: By default a user can't set a 3-state checkbox to the third state. It can only be done from code. Using this flags allows the user to set the checkbox to the third state by clicking.  
- ``ALIGN_RIGHT``: Makes the text appear on the left of the checkbox.  






.. _CheckBox-events:

|events| Events Emitted by this Class
=====================================

Handlers bound for the following event types will receive a :ref:`CommandEvent` parameter.

- EVT_CHECKBOX: Process a  ``wxEVT_COMMAND_CHECKBOX_CLICKED``   event, when the checkbox is clicked.   








         



.. seealso:: :ref:`RadioButton`, :ref:`CommandEvent`    







|

|class_hierarchy| Inheritance Diagram
=====================================

Inheritance diagram for class **CheckBox**

.. raw:: html

   <p class="graphviz">
   <img src="_static/images/inheritance/CheckBox_inheritance.png" alt="Inheritance diagram of CheckBox" usemap="#dummy" class="inheritance"/>
   <map id="dummy" name="dummy"> <area shape="rect" id="node1" href="Control.html" title="This is the base class for a control or 'widget'." alt="" coords="427,31,501,62"/> <area shape="rect" id="node7" href="CheckBox.html" title="A checkbox is a labelled box which by default is either on (checkmark is visible) or off (no checkmark)." alt="" coords="549,31,645,62"/> <area shape="rect" id="node2" href="Window.html" title="Window  is the base class for all windows and represents any visible object on screen." alt="" coords="297,31,377,62"/> <area shape="rect" id="node4" href="Object.html" title="This is the root class of many of the wxWidgets classes." alt="" coords="16,5,88,35"/> <area shape="rect" id="node5" href="EvtHandler.html" title="A class that can handle events from the windowing system." alt="" coords="148,31,247,62"/> <area shape="rect" id="node10" href="Trackable.html" title="Add-on base class for a trackable object." alt="" coords="5,58,99,89"/> </map> 
   </p>

|


|appearance| Control Appearance
===============================

|

.. figure:: _static/images/widgets/fullsize/wxmsw/checkbox.png
   :alt: wxMSW
   :figclass: floatleft
   
   **wxMSW**


.. figure:: _static/images/widgets/fullsize/wxmac/checkbox.png
   :alt: wxMAC
   :figclass: floatright
   
   **wxMAC**


.. figure:: _static/images/widgets/fullsize/wxgtk/checkbox.png
   :alt: wxGTK
   :figclass: floatcenter
   
   **wxGTK**


|


|method_summary| Methods Summary
================================

================================================================================ ================================================================================
:meth:`~CheckBox.__init__`                                                       Default constructor.
:meth:`~CheckBox.Create`                                                         Creates the checkbox for two-step construction.
:meth:`~CheckBox.Get3StateValue`                                                 Gets the state of a 3-state checkbox.
:meth:`~CheckBox.GetValue`                                                       Gets the state of a 2-state checkbox.
:meth:`~CheckBox.Is3State`                                                       Returns whether or not the checkbox is a 3-state checkbox.
:meth:`~CheckBox.Is3rdStateAllowedForUser`                                       Returns whether or not the user can set the checkbox to the third state.
:meth:`~CheckBox.IsChecked`                                                      This is just a maybe more readable synonym for :meth:`GetValue` : just as the latter, it returns ``True`` if the checkbox is checked and ``False`` otherwise.
:meth:`~CheckBox.Set3StateValue`                                                 Sets the checkbox to the given state.
:meth:`~CheckBox.SetValue`                                                       Sets the checkbox to the given state.
================================================================================ ================================================================================


|


|property_summary| Properties Summary
=====================================

================================================================================ ================================================================================
:attr:`~CheckBox.ThreeStateValue`                                                See :meth:`~CheckBox.Get3StateValue` and :meth:`~CheckBox.Set3StateValue`
:attr:`~CheckBox.Value`                                                          See :meth:`~CheckBox.GetValue` and :meth:`~CheckBox.SetValue`
================================================================================ ================================================================================


|


|api| Class API
===============
   

.. class:: CheckBox(Control)

   A checkbox is a labelled box which by default is either on (checkmark is visible) or off (no checkmark).
   
   **Possible constructors**::

       CheckBox()
       
       CheckBox(parent, id=ID_ANY, label='', pos=DefaultPosition,
                size=DefaultSize, style=0, validator=DefaultValidator,
                name=CheckBoxNameStr)
       



   .. method:: __init__(self, *args, **kw)



      |overload| **Overloaded Implementations**:

      **~~~**

      
      **__init__** `(self)`
      
      Default constructor.                  
      
                       
      
      
      
      .. seealso:: :meth:`Create` , :ref:`Validator`    
      
      
      
      
      
      
      
      **~~~**

      
      **__init__** `(self, parent, id=ID_ANY, label='', pos=DefaultPosition, size=DefaultSize, style=0, validator=DefaultValidator, name=CheckBoxNameStr)`
      
      Constructor, creating and showing a checkbox.                  
      
      
      
      
      :param `parent`: Parent window. Must not be ``None``.   
      :type `parent`: Window
      :param `id`: Checkbox identifier. The value ``ID_ANY`` indicates a default value.   
      :type `id`: int
      :param `label`: Text to be displayed next to the checkbox.   
      :type `label`: string
      :param `pos`: Checkbox position. If ``DefaultPosition``   is specified then a default position is chosen.   
      :type `pos`: Point
      :param `size`: Checkbox size. If ``DefaultSize``   is specified then a default size is chosen.   
      :type `size`: Size
      :param `style`: Window style. See :ref:`CheckBox`.   
      :type `style`: long
      :param `validator`: Window validator.   
      :type `validator`: Validator
      :param `name`: Window name.  
      :type `name`: string
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
                        
      
      
      
      .. seealso:: :meth:`Create` , :ref:`Validator`    
      
      
      
      
      
      
      
      **~~~**






   .. method:: Create(self, parent, id=ID_ANY, label='', pos=DefaultPosition, size=DefaultSize, style=0, validator=DefaultValidator, name=CheckBoxNameStr)

      Creates the checkbox for two-step construction.                  

      See :ref:`CheckBox`   for details.                  


      :param `parent`: 
      :type `parent`: Window
      :param `id`: 
      :type `id`: int
      :param `label`: 
      :type `label`: string
      :param `pos`: 
      :type `pos`: Point
      :param `size`: 
      :type `size`: Size
      :param `style`: 
      :type `style`: long
      :param `validator`: 
      :type `validator`: Validator
      :param `name`: 
      :type `name`: string




      :rtype: `bool`








   .. method:: Get3StateValue(self)

      Gets the state of a 3-state checkbox.                  

      Asserts when the function is used with a 2-state checkbox.                  

      :rtype: :ref:`CheckBoxState`








   .. method:: GetValue(self)

      Gets the state of a 2-state checkbox.                  

                

      :rtype: `bool`







      :returns: 

         Returns ``True`` if it is checked, ``False`` otherwise.   








   .. method:: Is3State(self)

      Returns whether or not the checkbox is a 3-state checkbox.                  

                

      :rtype: `bool`







      :returns: 

         ``True`` if this checkbox is a 3-state checkbox, ``False`` if it's a 2-state checkbox.   








   .. method:: Is3rdStateAllowedForUser(self)

      Returns whether or not the user can set the checkbox to the third state.                  

                

      :rtype: `bool`







      :returns: 

         ``True`` if the user can set the third state of this checkbox, ``False`` if it can only be set programmatically or if it's a 2-state checkbox.   








   .. method:: IsChecked(self)

      This is just a maybe more readable synonym for :meth:`GetValue` : just as the latter, it returns ``True`` if the checkbox is checked and ``False`` otherwise.                  

      :rtype: `bool`








   .. method:: Set3StateValue(self, state)

      Sets the checkbox to the given state.                  

      This does not cause a  ``wxEVT_COMMAND_CHECKBOX_CLICKED``   event to get emitted. 

      Asserts when the checkbox is a 2-state checkbox and setting the state to ``CHK_UNDETERMINED``.                  


      :param `state`: 
      :type `state`: CheckBoxState







   .. method:: SetValue(self, state)

      Sets the checkbox to the given state.                  

      This does not cause a  ``wxEVT_COMMAND_CHECKBOX_CLICKED``   event to get emitted. 




      :param `state`: If ``True``, the check is on, otherwise it is off.   
      :type `state`: bool




                  





   .. attribute:: ThreeStateValue

      See :meth:`~CheckBox.Get3StateValue` and :meth:`~CheckBox.Set3StateValue`


   .. attribute:: Value

      See :meth:`~CheckBox.GetValue` and :meth:`~CheckBox.SetValue`