Mixing wxPython and wxHTML
The widgets on this page were created dynamically on the fly by a
custom wxTagHandler found in wx.lib.wxpTag. You can look at the
sources and doc-string in the wxPython library at wx/lib/wxpTag.py.
The button below is added to the page like this:
<center><wxp module="wx" class="Button" width="50%">
<param name="label" value="It works!">
<param name="id" value="ID_OK">
</wxp></center>