Hi all, 
I'm just starting out with wxPython and this is what I would like to do: 
a) Show a Frame (with Panel inside it) and a button on that panel. 
b) When I press the button, a dialog box pops up (where I can select from a choice). 
c) When I press ok on dialog box, the dialog box should disappear (destroyed), but the original Frame+Panel+button are still there. 
d) If I press that button again, the dialog box will reappear. 
My code is given below. Unfortunately, I get the reverse effect. That is, 
a) The Selection-Dialog box shows up first (i.e., without clicking on any button since the TopLevelframe+button is never shown). 
b) When I click ok on dialog box, then the frame with button appears. 
c) Clicking on button again has no effect (i.e., dialog box does not show up again). 
What am I doing wrong ?  It seems that as soon as the frame is initialized (even before the .Show() is called), the dialog box is initialized and shown automatically.  
I am doing this using Eclipse+Pydev on WindowsXP with Python 2.6
============File:MainFile.py===============
import wx
import MyDialog   #This is implemented in another file: MyDialog.py
class TopLevelFrame(wx.Frame):
    def __init__(self,parent,id):    
        wx.Frame.__init__(self,parent,id,"Test",size=(300,200))
        panel=wx.Panel(self)
        button=wx.Button(panel, label='Show Dialog', pos=(130,20), size=(60,20))
        # Bind EVENTS --> HANDLERS. 
        button.Bind(wx.EVT_BUTTON, MyDialog.start(self))  
# Run the main loop to start program.         
if __name__=='__main__':
    app=wx.PySimpleApp()    
    TopLevelFrame(parent=None, id=-1).Show()  
    app.MainLoop()
============File:MyDialog.py===============
import wx
def start(parent):
    inputbox = wx.SingleChoiceDialog(None,'Choose Fruit', 'Selection Title',
                                     ['apple','banana','orange','papaya'])
    if inputbox.ShowModal()==wx.ID_OK:
        answer = inputbox.GetStringSelection()
        inputbox.Destroy()