wxPython: Fit() works on wxPanel, but not on surrounding wxFrame

[simo]

pit.grinja at gmx.de (Piet) wrote:

[snip]

> class myDialog(wxFrame):
>     def __init__(self,parent,title):
>         wxFrame.__init__(self,parent,-1, title, style=wxDEFAULT_FRAME_STYLE)
>         self.panel = wxPanel(self,-1)
>
> The position of the controls on the wxPanel inside the frame is
> controlled by sizers, which are initialized as follows:
>
>         self.MasterSizer=wxBoxSizer(wxVERTICAL)
>         self.panel.SetSizer(self.MasterSizer)
>         self.panel.SetAutoLayout(True)
>         self.MasterSizer.Fit(self.panel)
>         self.panel.Fit()
>         self.Fit()
> 
> To ensure that the size of the window and its layout always take into
> account the number of the controls, every function that will change
> the number of controls ends with the following threelines:
>
>         self.MasterSizer.RecalcSizes()
>         self.panel.Fit()
>         self.Fit()

I don't think Fit() is needed, it's implied by:

   self.MasterSizer.SetSizeHints(self)

But you've not used that. You've also not added the panel to the
sizer:

   self.MasterSizer.Add(self.panel, 1, wx.ALL|wx.EXPAND, 0)

Also, I think you need a self.Layout() at the end of those three
lines.

Finally, beware of scrollbars, they're not at all well handled by wx's
sizers.

To get past the initial layout differing from the resized layout, I
usually would call your EVT_SIZE handler to do the initial layout too,
then you can just fix one function....

It's a bit hard to debug with only a snippet of code.