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POwxPython: Threading GUI --> Using Custom Event Handler
 

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  1. POwxPython: Threading GUI --> Using Custom Event Handler
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    <p>I am trying to learn how to run a thread off the main GUI app to do my serial port sending/receiving while keeping my GUI alive. My best Googling attempts have landed me at the wxpython wiki on: <a href="http://wiki.wxpython.org/LongRunningTasks" rel="nofollow noreferrer">http://wiki.wxpython.org/LongRunningTasks</a> which provides several examples. I have settled on learning the first example, involving starting a worker thread when the particular button is selected.</p> <p>I am having trouble understanding the custom-event-definition:</p> <pre><code>def EVT_RESULT(win, func): """Define Result Event.""" win.Connect(-1, -1, EVT_RESULT_ID, func) class ResultEvent(wx.PyEvent): """Simple event to carry arbitrary result data.""" def __init__(self, data): """Init Result Event.""" wx.PyEvent.__init__(self) self.SetEventType(EVT_RESULT_ID) self.data = data </code></pre> <p>Primarily the </p> <pre><code>def EVT_RESULT(win, func): """Define Result Event.""" win.Connect(-1, -1, EVT_RESULT_ID, func) </code></pre> <p>I think EVT_RESULT is placed outside the classes so as to make it call-able by both classes (making it global?)</p> <p>And.. the main GUI app monitors the thread's progress via:</p> <pre><code># Set up event handler for any worker thread results EVT_RESULT(self,self.OnResult) </code></pre> <p>I also notice that in a lot of examples, when the writer uses </p> <pre><code>from wx import * </code></pre> <p>they simply bind things by</p> <pre><code>EVT_SOME_NEW_EVENT(self, self.handler) </code></pre> <p>as opposed to </p> <pre><code>wx.Bind(EVT_SOME_NEW_EVENT, self.handler) </code></pre> <p>Which doesn't help me understand it any faster. Thanks,</p>
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