wx.lib.pubsub: How to change the value in a timer

Question

Hello I have one question,the timer is set to 1000 milliseconds and I want with the radio buttons to change that value.Above I have a sample code but I dont know exactly how to do it.Is it possible with wx.lib.pubsub to change the value of the timer? Can someone give me an example?

Here is the code:

import wx
import time

class SettingsFrame(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY,size=(100,200))
        self.CenterOnParent()
        self.SetBackgroundColour('#e4e4e4')

        self.radio1 = wx.RadioButton(self, label="1 sec",pos=(40,45))
        self.Bind(wx.EVT_RADIOBUTTON, self.SetLab1)

        self.radio2 = wx.RadioButton(self, label="5 sec",pos=(40,65))
        self.Bind(wx.EVT_RADIOBUTTON, self.SetLab2)

        self.radio3 = wx.RadioButton(self, label="10 sec",pos=(40,85))
        self.Bind(wx.EVT_RADIOBUTTON, self.SetLab3)

        extBtn = wx.Button(self, label="Exit",pos=(20,110))
        extBtn.Bind(wx.EVT_BUTTON, self.extFrame)

    def SetLab1(self,event):
        self.Show()
    def SetLab2(self,event):
        self.Show()
    def SetLab3(self,event):
        self.Show

    def extFrame(self,event):
        self.Close()

class MainPanel(wx.Panel):

    def __init__(self, parent):
        wx.Panel.__init__(self, parent=parent)
        self.frame = parent
        self.CenterOnParent()

        setBtn = wx.Button(self, label="Set",pos=(45,10))
        setBtn.Bind(wx.EVT_BUTTON, self.setFrame)

        self.redraw_timer = wx.Timer(self)
        self.Bind(wx.EVT_TIMER, self.on_redraw_timer, self.redraw_timer)        
        self.redraw_timer.Start(milliseconds=1000)


        def setFrame(self, event):
            SettingsFrame().Show()

        def on_redraw_timer(self, event):
            print "Test: "+time.ctime()

class MainFrame(wx.Frame): 

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY,size=(200,200))
        panel = MainPanel(self)
        self.CenterOnParent()

if __name__ == "__main__":
    app = wx.PySimpleApp()
    frame = MainFrame()
    frame.Show()
    app.MainLoop()

Answer 1

There are lots of issues with your code. The first two radio buttons are bound to the same handler even though it's obvious they shouldn't be. SetLab3 isn't calling self.Show correctly, but then again, calling self.Show at all in ANY of these methods does not make sense. The wx.PySimpleApp construct is deprecated. You should be using wx.App now.

Now to actually answering the question itself. Yes, you can use pubsub for passing the information from the SettingFrame back to the MainPanel. Here is how to do it in wx 2.9 / newer pubsub:

import wx
import time

from wx.lib.pubsub import pub

class SettingsFrame(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY,size=(100,200))
        self.CenterOnParent()
        self.SetBackgroundColour('#e4e4e4')

        self.radio2 = wx.RadioButton(self, label="1 sec",pos=(40,45))
        self.Bind(wx.EVT_RADIOBUTTON, self.update_timer)

        self.radio2 = wx.RadioButton(self, label="5 sec",pos=(40,65))
        self.Bind(wx.EVT_RADIOBUTTON, self.update_timer)

        self.radio3 = wx.RadioButton(self, label="10 sec",pos=(40,85))
        self.Bind(wx.EVT_RADIOBUTTON, self.update_timer)

        extBtn = wx.Button(self, label="Exit",pos=(20,110))
        extBtn.Bind(wx.EVT_BUTTON, self.extFrame)

        self.choice = 1

    #----------------------------------------------------------------------
    def update_timer(self, event):
        """"""
        ctrl = event.GetEventObject()
        if ctrl.GetLabel() == "1 sec":
            self.choice = 1000
        elif ctrl.GetLabel() == "5 sec":
            self.choice = 5000
        elif ctrl.GetLabel() == "10 sec":
            self.choice = 10000

    def extFrame(self,event):
        pub.sendMessage("update_timer", message=self.choice)
        self.Close()

class MainPanel(wx.Panel):

    def __init__(self, parent):
        wx.Panel.__init__(self, parent=parent)
        self.frame = parent
        self.CenterOnParent()

        setBtn = wx.Button(self, label="Set",pos=(45,10))
        setBtn.Bind(wx.EVT_BUTTON, self.setFrame)

        self.redraw_timer = wx.Timer(self)
        self.Bind(wx.EVT_TIMER, self.on_redraw_timer, self.redraw_timer)        
        self.redraw_timer.Start(milliseconds=1000)

        pub.subscribe(self.listener, "update_timer")

    def setFrame(self, event):
        SettingsFrame().Show()

    def on_redraw_timer(self, event):
        print "Test: "+time.ctime()

    def listener(self, message, arg2=None):
        self.redraw_timer.Stop()
        self.redraw_timer.Start(message)

class MainFrame(wx.Frame): 

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY,size=(200,200))
        panel = MainPanel(self)
        self.CenterOnParent()

if __name__ == "__main__":
    app = wx.App(False)
    frame = MainFrame()
    frame.Show()
    app.MainLoop()

Note that this example cleans up your code a bit too. You can read more about pubsub here:

• http://www.blog.pythonlibrary.org/2013/09/05/wxpython-2-9-and-the-newer-pubsub-api-a-simple-tutorial/

You might also find this timer tutorial helpful:

• http://www.blog.pythonlibrary.org/2009/08/25/wxpython-using-wx-timers/