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copied!<p>Old topic, but I think I've got this figured out after being confused about it for a long time, so if anyone else comes through here looking for the answer, this might help.</p> <p>To manually post an event, you can use</p> <pre><code>self.GetEventHandler().ProcessEvent(event) </code></pre> <p>(wxWidgets docs <a href="http://docs.wxwidgets.org/stable/wx_wxevthandler.html#wxevthandlerprocessevent" rel="noreferrer">here</a>, wxPython docs <a href="http://www.wxpython.org/docs/api/wx.EvtHandler-class.html" rel="noreferrer">here</a>)</p> <p>or</p> <pre><code>wx.PostEvent(self.GetEventHandler(), event) </code></pre> <p>(<a href="http://docs.wxwidgets.org/stable/wx_miscellany.html#wxpostevent" rel="noreferrer">wxWidgets docs</a>, <a href="http://www.wxpython.org/docs/api/wx-module.html#PostEvent" rel="noreferrer">wxPython docs</a>) </p> <p>where <code>event</code> is the event you want to post. Construct the event with e.g.</p> <pre><code>wx.PyCommandEvent(wx.EVT_BUTTON.typeId, self.GetId()) </code></pre> <p>if you want to post a EVT_BUTTON event. Making it a <a href="http://www.wxpython.org/docs/api/wx.PyCommandEvent-class.html" rel="noreferrer">PyCommandEvent</a> means that it will propagate upwards; other event types don't propagate by default.</p> <p>You can also create custom events that can carry whatever data you want them to. Here's an example:</p> <pre><code>myEVT_CUSTOM = wx.NewEventType() EVT_CUSTOM = wx.PyEventBinder(myEVT_CUSTOM, 1) class MyEvent(wx.PyCommandEvent): def __init__(self, evtType, id): wx.PyCommandEvent.__init__(self, evtType, id) myVal = None def SetMyVal(self, val): self.myVal = val def GetMyVal(self): return self.myVal </code></pre> <p>(I think I found this code in a mailing list archive somewhere, but I can't seem to find it again. If this is your example, thanks! Please add a comment and take credit for it!)</p> <p>So now, to Post a custom event:</p> <pre><code>event = MyEvent(myEVT_CUSTOM, self.GetId()) event.SetMyVal('here is some custom data') self.GetEventHandler().ProcessEvent(event) </code></pre> <p>and you can bind it just like any other event</p> <pre><code>self.Bind(EVT_CUSTOM, self.on_event) </code></pre> <p>and get the custom data in the event handler</p> <pre><code>def on_event(self, e): data = e.GetMyVal() print 'custom data is: {0}'.format(data) </code></pre> <p>Or include the custom data in the event constructor and save a step:</p> <pre><code>class MyEvent(wx.PyCommandEvent): def __init__(self, evtType, id, val = None): wx.PyCommandEvent.__init__(self, evtType, id) self.myVal = val </code></pre> <p>etc.</p> <p>Hope this is helpful to someone.</p>

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