# reference across class instances
# from one panel class to another panel class
 
import wx
import time
 
class MyPanel1(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent, wx.ID_ANY,
            pos=(0,0), size=(300, 100))
        self.SetBackgroundColour("green")
        self.button = wx.Button(self, label=" panel1 button ")
        self.button.Bind(wx.EVT_BUTTON, self.buttonClick )
 
    def buttonClick(self, event):
        """
        use the panel2 label and
        reference via the parent --> frame
        """
        #  display something that indicates a change
        s = time.strftime("%H:%M:%S", time.localtime())
        frame.panel2.label.SetLabel(s)
 
 
class MyPanel2(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent, wx.ID_ANY,
            pos=(0, 100), size=(300, 100))
        self.SetBackgroundColour("yellow")
        self.label = wx.StaticText(self, wx.ID_ANY, " panel2 label ")
 
 
app = wx.App(0)
# create a frame, no parent, default ID, title, size
caption = "wx.Panel()"
frame = wx.Frame(None, wx.ID_ANY, caption, size=(300, 220))
 
# note that frame is the parent for the two panels
frame.panel1 = MyPanel1(frame)
frame.panel2 = MyPanel2(frame)
 
frame.Show(True)
app.MainLoop()

frame.panel2.label.SetLabel(s)

self.label = wx.StaticText(self, wx.ID_ANY, " panel2 label ")

frame.panel1 = MyPanel1(frame)
frame.panel2 = MyPanel2(frame)

# reference across class instances
# from one panel class to another panel class
# via common parent
 
import wx
import time
 
class MyFrame(wx.Frame):
    def __init__(self, parent, mytitle, mysize):
        wx.Frame.__init__(self, parent, wx.ID_ANY, mytitle, size=mysize)
 
        # here panel1 and panel2 are local
        # but can be accessed via the parent
        self.panel1 = MyPanel1(parent=self)
        self.panel2 = MyPanel2(parent=self)
 
 
class MyPanel1(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent, wx.ID_ANY,
            pos=(0,0), size=(300, 100))
        # parent is common to both panels and
        # in this case cross references the panels
        self.parent = parent
        self.SetBackgroundColour("green")
        self.button = wx.Button(self, label=" panel1 button ")
        self.button.Bind(wx.EVT_BUTTON, self.buttonClick )
 
    def buttonClick(self, event):
        """
        use the panel2 label and
        reference via the parent --> frame
        """
        #  display something that indicates a change
        s = time.strftime("%H:%M:%S", time.localtime())
        # parent, or in this case self.parent, allows you to
        # get to widgets created in panel2
        self.parent.panel2.label.SetLabel(s)
 
 
class MyPanel2(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent, wx.ID_ANY,
            pos=(0, 100), size=(300, 100))
        self.SetBackgroundColour("yellow")
        self.label = wx.StaticText(self, wx.ID_ANY, " panel2 label ")
 
 
app = wx.App(0)
# create a frame parent=None, title, size
mytitle = "cross reference via common parent"
MyFrame(None, mytitle, (300, 220)).Show(True)
app.MainLoop()

self.parent.panel2.label.SetLabel(s)

#call dialog, type new caption, set it to static text and destroy the dialog
import wx
class Main(wx.Frame):
	def __init__ (self, parent, id, title):
		wx.Frame.__init__(self, parent, id, title)
		panel = wx.Panel(self, -1)
		#Make button
		bu = wx.Button(panel, -1, "Call")
		self.Bind(wx.EVT_BUTTON, self.OnCall, id=bu.GetId())
		#create static text ctrl
		title = wx.StaticText(panel,-1, "Original Text", style=wx.ALIGN_LEFT)
		#Add to sizer
		sizer = wx.BoxSizer(wx.VERTICAL)
		sizer.Add(title, 1, wx.EXPAND |wx.ALL, 10)
		sizer.Add(bu, 0, wx.ALL, 10)
		panel.SetSizer(sizer)
		panel.Layout()
 
	def OnCall(self, event):
		dialog = Dialog(self, -1, "Change caption")
		dialog.Show(True)
		Main.Hide()
 
#Dialog box as another class
class Dialog(wx.Dialog):
	def __init__(self,  parent, id, title):
		wx.Dialog.__init__(self, parent, id, title)
		self.text = wx.TextCtrl(self, -1)
		ok = wx.Button(self, -1, "Ok")
		#Bind to event tochange caption of Title=text
		self.Bind(self, wx.EVT_BUTTON, self.OnChangeCaption, id = ok.GetId())
		sizer2 = wx.BoxSizer()
		sizer2.Add(self.text, 1, wx.EXPAND |wx.ALL, 10)
		sizer2.Add(ok, 0, wx.ALL, 10)
		self.SetSizer(sizer2)
		self.Layout()		
 
	def OnChangeCaption(self, event):
		newlabel = self.text.GetValue()
		self.title.SetLabel(newlabel)
 
app = wx.App(False)
f = Main(None, -1, "Call Children from parent")
f.Show(True)
app.MainLoop()