.. wxPython Phoenix documentation

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   Copyright: (c) 2011-2020 by Total Control Software
   License:   wxWindows License

.. include:: headings.inc

.. module:: wx.lib.wxpTag

.. currentmodule:: wx.lib.wxpTag

.. highlight:: python



.. _wx.lib.wxpTag:

==========================================================================================================================================
|phoenix_title|  **wx.lib.wxpTag**
==========================================================================================================================================

wx.lib.wxpTag

This module contains a wxHtmlTagHandler that knows how to build
and place wxPython widgets onto wxHtmlWindow web pages.

You don\'t need to use anything in this module directly, just
importing it will create the tag handler and add it to any
wxHtmlWinParsers created from that time forth.

Tags of the following form are recognised::

    <WXP class="classname" [module="modulename"] [width="num"] [height="num"]>
        <PARAM name="parameterName" value="parameterValue">
        ...
    </WXP>

where modulename is the name of a module (possibly in package
notation) to import and classname is the name of a class in that
module to create an instance of.  If the module tag-attribute is not
given or is an empty string, then wx is used.  The width and height
attributes are expected to be integers and will be passed to the
__init__ method of the class as a wxSize object named size.  However,
if the width attribute ends with the percent (%) symbol then the value
will be used as a percentage of the available width and the
wxHtmlWindow will manage the size.

The name-value pairs in all the nested PARAM tags are packaged up as
strings into a python dictionary and passed to the __init__ method of
the class as keyword arguments.  This means that they are all
accessible from the __init__ method as regular parameters, or you use
the special Python \*\*kw syntax in your __init__ method to get the
dictionary directly.

Some parameter values are special and if they are present then they will
be converted from strings to alternate datatypes.  They are:

    id           If the value of id can be converted to an integer, it will
                 be.  Otherwise it is assumed to be the name of an integer
                 variable in the module.

    colours      Any value of the form "#123ABC" will automatically be
                 converted to a wxColour object.

    Py Types     Any value beginning with "(", "[" or "{" are expected to
                 be a Python tuple, list, or dictionary and eval()
                 will be used to convert them to that type.  If the
                 eval() fails then the original string value will be
                 preserved.

    wx Types     Any value beginning with "wx" is expected to be an attempt
                 to create a wxPython object, such as a wxSize, etc.
                 The eval() will be used to try and construct the
                 object and if it fails then the original string value
                 will be used instead.

An example::

    <wxp module="wx" class="Button">
        <param name="label" value="Click here">
        <param name="id" value="ID_OK">
    </wxp>

Both the beginning and ending WXP tags are required.

In the future support will be added for another tag that can be
embedded between the two beginning and ending WXP tags and will
facilitate calling methods of the widget to help initialize it.
Additionally, support may be added to fetch the module from a web
server as is done with java applets.


|class_summary| Classes Summary
===============================

================================================================================ ================================================================================
`~wx.lib.wxpTag._Context`                                                        
`~wx.lib.wxpTag.wxpTagHandler`                                                   HtmlWinTagHandler() -> None
================================================================================ ================================================================================


|


.. toctree::
   :maxdepth: 1
   :hidden:

   wx.lib.wxpTag._Context
   wx.lib.wxpTag.wxpTagHandler