奇怪的行为-wxPython事件

Question

I have this following piece of code. It is working sometimes, it is not the other time.

   def OnReset(self, event):

    self.reset_pump.Disable() # Disables the button so it is clicked
    self.WriteToController([0x30],'GuiMsgIn') # Sends the reset command
    self.flag_read.set()
    self.tr.join()
    time.sleep(2)
    start = time.time()
    self.offset_text_control.Clear()
    print "Helloin reset"
    self.gain_text_control.Clear()
    self.firmware_version_text_control.Clear()
    self.pump_rpm_text_control.Clear()
    self.pressure_text_control.Clear()
    self.last_error_text_control.Clear()
    self.error_count_text_control.Clear()
    self.pump_model_text_control.Clear()
    self.pump_serial_number_text_control.Clear()
    self.on_time_text_control.Clear()
    self.job_on_time_text_control.Clear()

    #self.MessageBox('Pump RESET going on Click OK \n')
    # Having the above step is useful
    print time.time() - start
    #self.ser.close()
    wx.CallLater(3000, self.CalledAfter, [event,])

def CalledAfter(self, event):
    self.tr = threading.Thread(target=ReadData, name="ReadThread", args=(self.ser, self.flag_read))
    self.tr.daemon = True
    self.tr.start()
    self.reset_pump.Enable()

What it does is When I click the Reset button on my GUI, it has to clear certain text fields on the GUI. It has to clear it, only after joining the self.tr thread.

Once it clears, it will execute the command wx.CallLater(3000, self.CalledAfter, [event,]). Which then starts a new thread again.

Apparently The .Clear() command is working very at a non consistent level, it is working some time, not working the other times, and working again.

Any idea why this might happen would be very helpful.

Answer 1

There seems to be a difference in the way SetValue and Clear update the windows. Calling SetValue("") seems to be a suitable workaround to this behavior.