"""
Minimal code to reproduce wx.PyEvent issue.

Output on my laptop:

sys.executable: /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
sys.version: 2.7.10 (v2.7.10:15c95b7d81dc, May 23 2015, 09:33:12) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]
wx.version(): 3.0.3.dev2891+36b8076 osx-cocoa (phoenix)
ThreadWorker 1: event._getAttrDict().keys() = ['nextEvent']
Exception in thread Thread-1:
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "pyeventissue.py", line 45, in ThreadWorker
    % event._getAttrDict().keys())
RuntimeError: wrapped C/C++ object of type _Event has been deleted

"""
import sys
import threading

import wx
import wx.lib.newevent as NE

MyEventClass, myEventBinder = NE.NewEvent()


def MyEventHandler(event):
    """
    Event handler which starts a thread worker (taking event as an argument).

    Uncommenting the event.Clone() stuff fixes the above RuntimeError for me.
    """
    # if 'phoenix' in wx.PlatformInfo:
    #     event = event.Clone()
    def ThreadWorker(event):
        sys.stdout.write("ThreadWorker 1: event._getAttrDict().keys() = %s\n"
                         % event._getAttrDict().keys())
        wx.CallAfter(wx.BeginBusyCursor)
        sys.stdout.write("ThreadWorker 2: event._getAttrDict().keys() = %s\n"
                         % event._getAttrDict().keys())
    threading.Thread(target=ThreadWorker, args=[event]).start()


class MyApp(wx.App):
    def OnInit(self):
        self.frame = wx.Frame(None, title="MyApp")
        self.frame.Bind(myEventBinder, MyEventHandler)
        self.frame.Show()

        wx.CallAfter(self.AfterMainLoopHasStarted)
        return True

    def AfterMainLoopHasStarted(self):
        nextEvent = wx.PyEvent()
        wx.PostEvent(self.frame, MyEventClass(nextEvent=nextEvent))

sys.stdout.write("\nsys.executable: %s\n" % sys.executable)
sys.stdout.write("sys.version: %s\n" % sys.version)
sys.stdout.write("wx.version(): %s\n" % wx.version())

MyApp().MainLoop()