wxpython How to change the values of widgets in other panel -

my frame split in 3 panels, in paneltwo, there textctrl, in panelthree , there textctrl too, when input in textctrl of paneltwo, need change value of textctrl in panelthree, how it?

# -*- coding: utf-8 -*-  import wx  import sys      class panelone(wx.panel):      """"""         #----------------------------------------------------------------------      def __init__(self, parent):          """constructor"""          wx.panel.__init__(self, parent)          self.setbackgroundcolour("blue")          font = wx.font(12, wx.decorative, wx.normal, wx.bold)          button1 = wx.button(self, -1, label='button1')          button2 = wx.button(self, -1, label='button2')          button1.setfont(font)          button2.setfont(font)                      vbox = wx.boxsizer(wx.vertical)          vbox.add(button1, 1, wx.expand)          vbox.add(button2, 1, wx.expand)          self.setsizer(vbox)            class paneltwo(wx.panel):      """"""            #----------------------------------------------------------------------      def __init__(self, parent):          """constructor"""          wx.panel.__init__(self, parent)          textctrl = wx.textctrl(self, -1, pos=(200,120), style=wx.te_process_enter|wx.center)              textctrl.bind(wx.evt_key_down, self.onenter)                def onenter(self, event):          keycode = event.getkeycode()          if keycode == wx.wxk_return or keycode == wx.wxk_numpad_enter:              """here, want print message in panelthree textctrl """          event.skip()    class panelthree(wx.panel):      """"""         #----------------------------------------------------------------------      def __init__(self, parent):          """constructor"""          wx.panel.__init__(self, parent)          self.setbackgroundcolour("white")                    text = wx.textctrl(self, -1,                               style = wx.te_multiline|wx.te_readonly|                              wx.hscroll)          vbox = wx.boxsizer(wx.vertical)          vbox.add(text, 1, wx.expand)          self.setsizer(vbox)               ########################################################################  class mainpanel(wx.panel):      """"""         #----------------------------------------------------------------------      def __init__(self, parent):          """constructor"""          wx.panel.__init__(self, parent)             topsplitter = wx.splitterwindow(self, size=(800,600))          vsplitter = wx.splitterwindow(topsplitter)             self.panelone = panelone(vsplitter)          self.paneltwo = paneltwo(vsplitter)          self.panelthree = panelthree(topsplitter)                    vsplitter.splitvertically(self.panelone, self.paneltwo)          vsplitter.setsashgravity(0.3)            topsplitter.splithorizontally(vsplitter, self.panelthree)          topsplitter.setsashgravity(0.5)             sizer = wx.boxsizer(wx.vertical)          sizer.add(topsplitter, 1, wx.expand)                        ########################################################################  class mainframe(wx.frame):      """"""         #----------------------------------------------------------------------      def __init__(self):          """constructor"""          wx.frame.__init__(self, none, title='my program',                            size=(800,600))          panel = mainpanel(self)          self.show()     #----------------------------------------------------------------------  if __name__ == "__main__":      app = wx.app(false)      frame = mainframe()      app.mainloop()

iam not sure if best way it. anyways, i've modified code below:

# -*- coding: utf-8 -*- import wx import sys   class panelone(wx.panel):     """"""      #----------------------------------------------------------------------     def __init__(self, parent):         """constructor"""         wx.panel.__init__(self, parent)         self.setbackgroundcolour("blue")         font = wx.font(12, wx.decorative, wx.normal, wx.bold)         button1 = wx.button(self, -1, label='button1')         button2 = wx.button(self, -1, label='button2')         button1.setfont(font)         button2.setfont(font)           vbox = wx.boxsizer(wx.vertical)         vbox.add(button1, 1, wx.expand)         vbox.add(button2, 1, wx.expand)         self.setsizer(vbox)  class paneltwo(wx.panel):     """"""      #----------------------------------------------------------------------     def __init__(self, parent):         """constructor"""         wx.panel.__init__(self, parent)         self.textctrl = wx.textctrl(self, -1, pos=(200,120), style=wx.te_process_enter|wx.center)        class panelthree(wx.panel):     """"""      #----------------------------------------------------------------------     def __init__(self, parent):         """constructor"""         wx.panel.__init__(self, parent)         self.setbackgroundcolour("white")          self.text = wx.textctrl(self, -1,                              style = wx.te_multiline|wx.te_readonly|                             wx.hscroll)         vbox = wx.boxsizer(wx.vertical)         vbox.add(self.text, 1, wx.expand)         self.setsizer(vbox)   ######################################################################## class mainpanel(wx.panel):     """"""      #----------------------------------------------------------------------     def __init__(self, parent):         """constructor"""         wx.panel.__init__(self, parent)          topsplitter = wx.splitterwindow(self, size=(800,600))         vsplitter = wx.splitterwindow(topsplitter)          self.panelone = panelone(vsplitter)         self.paneltwo = paneltwo(vsplitter)         self.panelthree = panelthree(topsplitter)          self.paneltwo.textctrl.bind(wx.evt_key_down, self.onenter)          vsplitter.splitvertically(self.panelone, self.paneltwo)         vsplitter.setsashgravity(0.3)          topsplitter.splithorizontally(vsplitter, self.panelthree)         topsplitter.setsashgravity(0.5)          sizer = wx.boxsizer(wx.vertical)         sizer.add(topsplitter, 1, wx.expand)      def onenter(self, event):         keycode = event.getkeycode()         if keycode == wx.wxk_return or keycode == wx.wxk_numpad_enter:             """here, want print message in panelthree textctrl """             self.panelthree.text.setvalue("enter pressed")         else:             self.panelthree.text.setvalue("")         event.skip()    ######################################################################## class mainframe(wx.frame):     """"""      #----------------------------------------------------------------------     def __init__(self):         """constructor"""         wx.frame.__init__(self, none, title='my program',                           size=(800,600))         panel = mainpanel(self)         self.show()  #---------------------------------------------------------------------- if __name__ == "__main__":     app = wx.app(false)     frame = mainframe()     app.mainloop() 

edit:

however, referring greenasjade's answer question, using pubsub seems cleaner way of achieving it.

# -*- coding: utf-8 -*- import wx import sys wx.lib.pubsub import pub  class panelone(wx.panel):     """"""      #----------------------------------------------------------------------     def __init__(self, parent):         """constructor"""         wx.panel.__init__(self, parent)         self.setbackgroundcolour("blue")         font = wx.font(12, wx.decorative, wx.normal, wx.bold)         button1 = wx.button(self, -1, label='button1')         button2 = wx.button(self, -1, label='button2')         button1.setfont(font)         button2.setfont(font)           vbox = wx.boxsizer(wx.vertical)         vbox.add(button1, 1, wx.expand)         vbox.add(button2, 1, wx.expand)         self.setsizer(vbox)  class paneltwo(wx.panel):     """"""      #----------------------------------------------------------------------     def __init__(self, parent):         """constructor"""         wx.panel.__init__(self, parent)         textctrl = wx.textctrl(self, -1, pos=(200,120), style=wx.te_process_enter|wx.center)             textctrl.bind(wx.evt_key_down, self.onenter)      def onenter(self, event):         keycode = event.getkeycode()         pub.sendmessage("change_text",value="")         if keycode == wx.wxk_return or keycode == wx.wxk_numpad_enter:             """here, want print message in panelthree textctrl """             pub.sendmessage("change_text", value = "enter pressed")         event.skip()  class panelthree(wx.panel):     """"""      #----------------------------------------------------------------------     def __init__(self, parent):         """constructor"""         wx.panel.__init__(self, parent)         self.setbackgroundcolour("white")          self.text = wx.textctrl(self, -1,                              style = wx.te_multiline|wx.te_readonly|                             wx.hscroll)         vbox = wx.boxsizer(wx.vertical)         vbox.add(self.text, 1, wx.expand)         self.setsizer(vbox)         pub.subscribe(self.printmessage, "change_text")      def printmessage(self, value):         self.text.setvalue(value)    ######################################################################## class mainpanel(wx.panel):     """"""      #----------------------------------------------------------------------     def __init__(self, parent):         """constructor"""         wx.panel.__init__(self, parent)          topsplitter = wx.splitterwindow(self, size=(800,600))         vsplitter = wx.splitterwindow(topsplitter)          self.panelone = panelone(vsplitter)         self.paneltwo = paneltwo(vsplitter)         self.panelthree = panelthree(topsplitter)          vsplitter.splitvertically(self.panelone, self.paneltwo)         vsplitter.setsashgravity(0.3)          topsplitter.splithorizontally(vsplitter, self.panelthree)         topsplitter.setsashgravity(0.5)          sizer = wx.boxsizer(wx.vertical)         sizer.add(topsplitter, 1, wx.expand)    ######################################################################## class mainframe(wx.frame):     """"""      #----------------------------------------------------------------------     def __init__(self):         """constructor"""         wx.frame.__init__(self, none, title='my program',                           size=(800,600))         panel = mainpanel(self)         self.show()  #---------------------------------------------------------------------- if __name__ == "__main__":     app = wx.app(false)     frame = mainframe()     app.mainloop()