====== レイアウト配置 ======
各パーツの配列は、Sizer を使う。
  * wx.BoxSizer
  * wx.GridSizer
  * wx.FrexGridSizer 

----
===== BoxSizer の例 =====

<file python sizer.py>
import os
import sys
import wx


class Panel1(wx.Panel) :
    def __init__(self, parent, *args, **kwargs) :
        wx.Panel.__init__(self, parent, wx.ID_ANY)

        b1a = self.SetButton("Button1-A")
        b1b = self.SetButton("Button1-B")
        layout = wx.BoxSizer(wx.VERTICAL)
        layout.Add(b1a, 2, flag=wx.EXPAND)
        layout.Add(b1b, 1, flag=wx.EXPAND)
        self.SetSizer(layout)

    def SetButton(self, Name) :
        return wx.Button(self, wx.ID_ANY, Name)

class Panel2(wx.Panel) :
    def __init__(self, parent, *args, **kwargs) :
        wx.Panel.__init__(self, parent, wx.ID_ANY)

        b2a = self.SetButton("Button2-A")
        b2b = self.SetButton("Button2-B")
        b2c = self.SetButton("Button2-C")
        bp1 = Panel1(self)

        layout = wx.BoxSizer(wx.VERTICAL)
        layout.Add(b2a, 3, flag=wx.EXPAND)
        layout.Add(b2b, 2, flag=wx.EXPAND)
        layout.Add(b2c, 4, flag=wx.EXPAND)
        layout.Add(bp1, 1, flag=wx.EXPAND)
        self.SetSizer(layout)

    def SetButton(self, Name) :
        return wx.Button(self, wx.ID_ANY, Name)



class IntegratePanel(wx.Panel) :
    def __init__(self, parent, *args, **kwargs) :
        wx.Panel.__init__(self, parent, wx.ID_ANY)

        bp1 = Panel1(self)
        bp2 = Panel2(self)

        layout = wx.BoxSizer(wx.HORIZONTAL)
        layout.Add(bp1, 3, flag=wx.EXPAND)
        layout.Add(bp2, 2, flag=wx.EXPAND)
        self.SetSizer(layout)


class MainFrame(wx.Frame) :
    def __init__(self) :
        super().__init__(None, title="Sizer")

        self.SetSize(1000,1000)
        self.SetMinSize((500, 500))
        self.Center(wx.BOTH)
        IntegratePanel(self)
        self.Show()

def main() :

    app = wx.App()
    frame = MainFrame()
    app.MainLoop()
    return

if __name__ == '__main__' :
    main()

</file>

===== 自動サイズ調整 =====
wx.EXPAND でサイズ調整される

  layout = wx.BoxSizer(wx.HORIZONTAL)
  layout.Add(button, 1, wx.EXPAND)
  # 0: サイズ変更なし
  # 1: 自動調整あり。数字は、比率。

<file python sizer2.py>
import os
import sys
import wx

class Panel(wx.Panel) :
    def __init__(self, parent, *args, **kwargs) :
        wx.Panel.__init__(self, parent, wx.ID_ANY)
        
        button4 = wx.Button(self, wx.ID_ANY, 'only vertical exapnd', name='button4', size=(200, 50))
        layout = wx.BoxSizer(wx.HORIZONTAL)
        layout.Add(button4, 0, wx.EXPAND)
        self.SetSizer(layout)
        
class TopPanel(wx.Panel) :
    def __init__(self, parent, *args, **kwargs) :
        wx.Panel.__init__(self, parent, wx.ID_ANY)
        
        button1 = wx.Button(self, wx.ID_ANY, 'ogriginal Size', name='button1', size=(200, 50))
        button2 = wx.Button(self, wx.ID_ANY, 'both vertical and horizontal expand', name='button2', size=(200, 50))
        button3 = wx.Button(self, wx.ID_ANY, 'only horizontal exapnd', name='button3', size=(200, 50))
        p = Panel(self, wx.ID_ANY)
        
        layout = wx.BoxSizer(wx.VERTICAL)
        layout.Add(button1, 0)
        layout.Add(button2, 1, flag=wx.EXPAND)        
        layout.Add(button3, 0, flag=wx.EXPAND)        

        layout.Add(p, 1, flag=wx.EXPAND)        

        self.SetSizer(layout)


class MainFrame(wx.Frame) :
    def __init__(self, *args, **kwargs) :
        super().__init__(None, title="exFrame", **kwargs)
        
        topPanel = TopPanel(self)
        layout = wx.BoxSizer(wx.VERTICAL)
        layout.Add(topPanel, 1, flag=wx.EXPAND)
        self.SetSizer(layout)
        
        self.SetSize(500,500)
        self.SetMinSize((100, 100))
        self.Center(wx.BOTH)
        self.Show()

def main() :

    app = wx.App()
    MainFrame()
    app.MainLoop()
    return

if __name__ == '__main__' :
    main()

</file>