Prevent panels from overlapping in wxPython?

Question

I am just getting started with wxPython. I have the following code:

import wx
class SASFrame(wx.Frame):
 def __init__(self,parent,id,title):
 wx.Frame.__init__(self,parent,id,title)
 groupPanel = wx.Panel(self)
 st = wx.StaticText(groupPanel, -1, "Which characteristics would you like to group by?")
 cbAge = wx.CheckBox(groupPanel, -1, "Age")
 cbMarket = wx.CheckBox(groupPanel,-1, "Market")
 groupSizer = wx.BoxSizer(wx.VERTICAL)
 groupSizer.AddMany([st,cbAge, cbMarket])
 groupPanel.SetSizer(groupSizer)
 summaryPanel = wx.Panel(self)
 st2 = wx.StaticText(summaryPanel, -1, "What would you like to summarize?")
 cbPremiums = wx.CheckBox(summaryPanel,-1, "Premiums")
 cbClaims = wx.CheckBox(summaryPanel,-1, "Claims")
 summarySizer = wx.BoxSizer(wx.VERTICAL)
 summarySizer.AddMany([st2,cbPremiums,cbClaims])
 summaryPanel.SetSizer(summarySizer)
 frameSizer = wx.BoxSizer(wx.VERTICAL)
 frameSizer.Add(groupPanel,1,wx.EXPAND)
 frameSizer.Add(summaryPanel,1,wx.EXPAND)
 self.SetSizer(frameSizer)
class SASApp(wx.App):
 def __init__(self):
 wx.App.__init__(self)
 def OnInit(self):
 self.frame = SASFrame(parent=None,id=-1,title="HCRFM Custom Report Generator")
 self.frame.Show()
 self.SetTopWindow(self.frame)
 return True
def main():
 app = SASApp()
 app.MainLoop()
if __name__ == '__main__':
 main()

When I resize the window so that it is really small, it looks like this:

overlap

How can I prevent this overlapping? Also, how can I make it so the the user cannot make the window small enough to cut off the text going horizontally? I am not sure if I should worry about the latter.

Answer 1

Just edit your line to this:

self.SetSizerAndFit(frameSizer)

It is going to behave exactly as you would expect. It will layout your widgets to minimum size window (add borders or spaces if / where you need it) and it will never allow smaller window than that. More information in wx docs: http://www.wxpython.org/docs/api/wx.Window-class.html#SetSizerAndFit

Answer 2

The way I do is to determine and fix the minimum size of the window that prevents unwanted hiding of widgets. I use wx.Window method:

SetMinSize((x,y))

wx.Window has another alternative method:

SetSizeHintsSz(self, minSize, maxSize=DefaultSize, incSize=DefaultSize)

Allows specification of minimum and maximum window sizes, and window size increments. If a pair of values is not set (or set to -1), the default values will be used. If this function is called, the user will not be able to size the window outside the given bounds (if it is a top-level window.) Sizers will also inspect the minimum window size and will use that value if set when calculating layout.

The resizing increments are only significant under Motif or Xt.