GridBagSizer: Items not in the correct positions

[Egon Frerich]

I have a little class which combines two widgets (Button and TextCtrl):

> import wx
> 
> class Taganzeige(wx.Window):
> 	def __init__(self, parent, *args, **kwds):
> 		self.parent = parent
> 		self.text = kwds.pop('text')
> 		super(Taganzeige, self).__init__(parent, 
> 			*args, **kwds)
> 		self.panel_1 = wx.Panel(self.parent, -1)
> 		self.tagnr = wx.Button(self.panel_1, -1, "button", style=wx.NO_BORDER)
> 		self.ereignisse = wx.TextCtrl(self.panel_1, -1,  
> 			value=self.text,
> 			size=(118,88),
> 			style=wx.TE_MULTILINE|wx.TE_READONLY|wx.NO_BORDER)
> 
> 		self.__set_properties()
> 		self.__do_layout()
> 
> 		self.panel_1.Bind(wx.EVT_BUTTON, self.taggewaehlt, self.tagnr)
> 
> 	def __set_properties(self):
> 		self.tagnr.SetMinSize((118, 22))
> 		self.tagnr.SetBackgroundColour(wx.Colour(255, 255, 0))
> 		self.tagnr.SetFont(wx.Font(8, wx.DEFAULT, wx.NORMAL, wx.NORMAL, 0, ""))
> 		self.ereignisse.SetFont(wx.Font(8, wx.DEFAULT, wx.NORMAL, wx.NORMAL, 0, ""))
> 
> 	def __do_layout(self):
> 		sizer_2 = wx.BoxSizer(wx.VERTICAL)
> 		sizer_3 = wx.BoxSizer(wx.VERTICAL)
> 		sizer_3.Add(self.tagnr, 0, 0, 0)
> 		sizer_3.Add(self.ereignisse, 1, 0, 0)
> 		self.panel_1.SetSizer(sizer_3)
> 		sizer_2.Add(self.panel_1, 1, wx.EXPAND, 0)
> 		self.SetSizer(sizer_2)
> 		sizer_2.Fit(self)
> 		self.Layout()
> 
> 	def taggewaehlt(self, event): # wxGlade: MyFrame.<event_handler>
> 		print "Event handler `taggewaehlt' not implemented!"
> 		event.Skip()

In the following program I create some instances of this class and put 
them into a grid:

> import wx
> from taganzeige import Taganzeige
> 
> class Hauptfenster(wx.Frame):
>     def __init__(self, *args, **kwds):
>         # begin wxGlade: Hauptfenster.__init__
>         kwds["style"] = wx.DEFAULT_FRAME_STYLE
>         wx.Frame.__init__(self, *args, **kwds)
>         self.panel_1 = wx.Panel(self, -1)
>         self.SetTitle("frame_1")
>         self.SetSize((600, 840))
>         grid_sizer_1 = self.gbs = wx.GridBagSizer()
>         for zeile in range(5):
>             for spalte in range(7):
>                 t = Taganzeige(self.panel_1, -1, 
>                     text="("+str(zeile)+","+str(spalte)+")")
>                 n=grid_sizer_1.Add(t, (zeile,spalte))
>                 print zeile,spalte,n
>                 print grid_sizer_1.CalcMin()
>         self.panel_1.SetSizerAndFit(grid_sizer_1)
>         print self.panel_1.GetSize()
>         self.SetClientSize(self.panel_1.GetSize())
> 
> 
> if __name__ == "__main__":
>     app = wx.PySimpleApp(0)
>     wx.InitAllImageHandlers()
>     frame_1 = Hauptfenster(None, -1, "")
>     app.SetTopWindow(frame_1)
>     frame_1.Show()
>     app.MainLoop()

If you run this program only one instance Taganzeige is shown in 
position (0,0). The print test instructions tells me that the 
grid_sizer_1 gets bigger and bigger.

The last lines:

> 4 5 <wx._core.GBSizerItem; proxy of <Swig Object of type 'wxGBSizerItem *' at 0x100cd50> >
> (826, 550)
> 4 6 <wx._core.GBSizerItem; proxy of <Swig Object of type 'wxGBSizerItem *' at 0x1019de0> >
> (826, 550)
> (826, 550)

Can somebody find my error?

Egon