MemoryFSHandler documentation?

Where can I find full documentation of the MemoryFSHandler class? I
would like to know how FindFirst works, what does CanOpen do etc. But
I can only find pages generated from the API, without any explanation.
For example:

http://www.wxpython.org/docs/api/wx.MemoryFSHandler-class.html

Looks like MemoryFSHandler.CanOpen is inherited from
CPPFileSystemHandler, but it is hard to find anything more. Printing
__doc__ doesn't help either:

C:\> python
Python 2.7.2 (default, Jun 12 2011, 14:24:46) [MSC v.1500 64 bit
(AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.

import wx
wx.MemoryFSHandler.CanOpen.__doc__

'CanOpen(self, String location) -> bool'

Right now my primary problem is to check out if a file was already
added to a MemoryFSHandler or not. But CanOpen and FindFirst don't
work as I would expect and I'm stuck.

Thanks,

   Laszlo

http://docs.wxwidgets.org/trunk/classwx_memory_f_s_handler.html

···

On 9/18/11 1:53 AM, nagylzs wrote:

Where can I find full documentation of the MemoryFSHandler class? I
would like to know how FindFirst works, what does CanOpen do etc. But
I can only find pages generated from the API, without any explanation.

--
Robin Dunn
Software Craftsman