ChangePanel.py

#!/usr/bin/env python


import wx

class Panel1(wx.Panel):
    def __init__(self, parent, id):
        print "Panel1 being initialized"

        wx.Panel.__init__(self, parent, id)

        topSizer = wx.BoxSizer(wx.VERTICAL)

        header = wx.StaticText(self, -1, 'First Panel')
        topSizer.Add(header, 0, wx.ALIGN_CENTER|wx.ALL, 3)

        button = wx.Button(self, -1, ' Next Panel ', wx.DefaultPosition, wx.Size(-1, 32))
        self.Bind(wx.EVT_BUTTON, self.Click, button)

        topSizer.Add((1, 13), 0, wx.ALIGN_CENTER)
        topSizer.Add(button, 0, wx.ALIGN_CENTER|wx.RIGHT|wx.LEFT, 60)
        topSizer.Add((1, 13), 0, wx.ALIGN_CENTER)

        footer = wx.StaticText(self, -1, 'First Panel')
        topSizer.Add(footer, 0, wx.ALIGN_CENTER|wx.ALL, 3)

        self.SetSizer(topSizer)
        self.Fit()

    def Click(self, event):
        self.GetParent().ChangePanel()

class Panel2(wx.Panel):
    def __init__(self, parent, id):
        print "Panel2 being initialized"
        wx.Panel.__init__(self, parent, id)

        topSizer = wx.BoxSizer(wx.HORIZONTAL)
        topSizer.Add((20, 20), 0, wx.ALIGN_CENTER|wx.ALL, 3)

        leftText = wx.StaticText(self, -1, 'Second\n  Panel')
        topSizer.Add(leftText, 0, wx.ALIGN_CENTER|wx.ALL, 3)

        button = wx.Button(self, -1, ' Next Panel ', wx.DefaultPosition, wx.Size(-1, 32))
        self.Bind(wx.EVT_BUTTON, self.Click, button)

        topSizer.Add((20, 20), 0, wx.ALIGN_CENTER|wx.ALL, 3)
        topSizer.Add(button, 0, wx.ALIGN_CENTER|wx.TOP|wx.BOTTOM, 33)
        topSizer.Add((20, 20), 0, wx.ALIGN_CENTER|wx.ALL, 3)

        rightText = wx.StaticText(self, -1, 'Second\n  Panel')
        topSizer.Add(rightText, 0, wx.ALIGN_CENTER|wx.ALL, 3)

        topSizer.Add((20, 20), 0, wx.ALIGN_CENTER|wx.ALL, 3)

        self.SetSizer(topSizer)
        self.Fit()

    def Click(self, event):
        self.GetParent().ChangePanel()

class MyFrame(wx.Frame):
    def __init__(self, parent, id):
        wx.Frame.__init__(self, parent, id, 'My App')

        self.panel1 = Panel1(self, -1)
        self.panel2 = Panel2(self, -1)
        self.currentPanel = 2

        self.ChangePanel()

        self.Fit()
        self.Show(True)

    def ChangePanel(self):
        if self.currentPanel == 1:
            self.currentPanel = 2
            self.panel1.Hide()
            self.panel2.Show()
        else:
            self.currentPanel = 1
            self.panel2.Hide()
            self.panel1.Show()
        self.Fit()

class MyApp(wx.App):
    def OnInit(self):
        self.frame = MyFrame(None, -1)
        self.SetTopWindow(self.frame)
        return True

def main():
    app = MyApp(0)
    app.MainLoop()

if __name__ == '__main__':
    main()