Am working with multiple wx.Choice control in wxPython and I needed the make a reset button to restore the default option “-- Select --” when clicked. Am unable to achieve that, the closest I came is to reset to empty options which is NOT what is want. I want the default option “-- Select --” to come up when reset button is pressed. See my code below.
data.py
import wx
class MyFrame1 ( wx.Frame ):
def __init__( self, parent ):
wx.Frame.__init__ ( self, parent, id = wx.ID_ANY, title = wx.EmptyString, pos = wx.DefaultPosition, size = wx.Size( 250,300 ), style = wx.CAPTION|wx.CLOSE_BOX|wx.MINIMIZE_BOX|wx.SYSTEM_MENU|wx.TAB_TRAVERSAL )
self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )
DataBox = wx.BoxSizer( wx.HORIZONTAL )
gSizer2 = wx.GridSizer( 0, 2, 0, 0 )
self.Color_Label = wx.StaticText( self, wx.ID_ANY, u"Color:", wx.DefaultPosition, wx.DefaultSize, 0 )
self.Color_Label.Wrap( -1 )
self.Color_Label.SetFont( wx.Font( 13, 70, 90, 90, False, wx.EmptyString ) )
gSizer2.Add( self.Color_Label, 0, wx.ALL, 5 )
Color_optionsChoices = [ u"-- Select --", u"Red", u"Green", u"Pink", u"Blue", u"Yellow", u"White", u"Brown" ]
self.Color_options = wx.Choice( self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, Color_optionsChoices, 0 )
self.Color_options.SetSelection( 0 )
gSizer2.Add( self.Color_options, 0, wx.ALL, 5 )
self.Age = wx.StaticText( self, wx.ID_ANY, u"Age:", wx.DefaultPosition, wx.DefaultSize, 0 )
self.Age.Wrap( -1 )
self.Age.SetFont( wx.Font( 13, 70, 90, 90, False, wx.EmptyString ) )
gSizer2.Add( self.Age, 0, wx.ALL, 5 )
Age_optionsChoices = [ u"-- Select --", u"15", u"16", u"17", u"18", u"19", u"20", u"21", u"22", u"23", u"24", u"25", wx.EmptyString ]
self.Age_options = wx.Choice( self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, Age_optionsChoices, 0 )
self.Age_options.SetSelection( 0 )
gSizer2.Add( self.Age_options, 0, wx.ALL, 5 )
self.Country = wx.StaticText( self, wx.ID_ANY, u"Country:", wx.DefaultPosition, wx.DefaultSize, 0 )
self.Country.Wrap( -1 )
self.Country.SetFont( wx.Font( 13, 70, 90, 90, False, wx.EmptyString ) )
gSizer2.Add( self.Country, 0, wx.ALL, 5 )
Country_optionsChoices = [ u"-- Select --", u"Mexico", u"Peru", u"India", u"USA", u"UK", u"Greece", u"Agentina", u"Greece", u"Brazil", u"Egypt" ]
self.Country_options = wx.Choice( self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, Country_optionsChoices, 0 )
self.Country_options.SetSelection( 0 )
gSizer2.Add( self.Country_options, 0, wx.ALL, 5 )
self.Reset_button = wx.Button( self, wx.ID_ANY, u"Reset", wx.DefaultPosition, wx.DefaultSize, 0 )
gSizer2.Add( self.Reset_button, 0, wx.ALL, 5 )
self.Exit_button = wx.Button( self, wx.ID_ANY, u"Exit", wx.DefaultPosition, wx.DefaultSize, 0 )
gSizer2.Add( self.Exit_button, 0, wx.ALL, 5 )
DataBox.Add( gSizer2, 1, wx.EXPAND|wx.ALIGN_CENTER_VERTICAL, 5 )
self.SetSizer( DataBox )
self.Layout()
self.Centre( wx.BOTH )
# Connect Events
self.Reset_button.Bind( wx.EVT_BUTTON, self.OnResetButton )
self.Exit_button.Bind( wx.EVT_BUTTON, self.OnExitButton )
def OnResetButton( self, event ):
# val = '-- Select --' # NOT WORKING
val = ' ' # THIS WORKS, BUT RESETS TO EMPTY CHOICE
self.Color_options.SetLabel(val)
self.Age_options.SetLabel(val)
self.Country_options.SetLabel(val)
def OnExitButton( self, event ):
self.Close()
app = wx.App(0)
MyFrame1(None).Show()
app.MainLoop()
Thanks for your time in advance.
Please reduce your source code to a minimal runnable example (explained below).
Answer: I am amazed that wx.Choice.SetLabel(' ') does something useful. What you want to do instead is:
self.Color_Options.SetStringSelection(val)
(see the wxWidgets documentation for wxChoice/wxItemContainer).
Remark: u'--Select--' is not '--Select--' in Python. As it happens, if the source encoding is set to UTF-8, wxPython will not complain and understand str encoden in UTF-8 as well as u''.
Minimal runnable example: As important as ever: Making your example as small as possible will teach you which parts are relevant for your question and which are not. In many cases, by writing the minimal example, I very often find the answer myself.
Minimising your example:
import wx
class MyFrame1(wx.Frame):
def __init__(self, *args, **kwds):
wx.Frame.__init__(self, *args, **kwds)
pnl = wx.Panel(self, wx.ID_ANY)
szmain = wx.BoxSizer(wx.VERTICAL)
color_choices = [u"-- Select --", u"Red", u"Green", u"Pink", u"Blue", u"Yellow", u"White", u"Brown"]
self.color_options = wx.Choice(pnl, wx.ID_ANY, choices=color_choices)
self.color_options.SetSelection(0)
self.reset_button = wx.Button(pnl, wx.ID_ANY, u"Reset")
szmain.Add(self.color_options, 0, wx.ALL|wx.EXPAND, 4)
szmain.Add(self.reset_button, 0, wx.ALL|wx.EXPAND, 4)
pnl.SetSizer(szmain)
self.reset_button.Bind( wx.EVT_BUTTON, self.OnResetButton )
def OnResetButton(self, event):
val = '-- Select --' # NOT WORKING
# val = ' ' # THIS WORKS, BUT RESETS TO EMPTY CHOICE
self.color_options.SetLabel(val)
app = wx.App(0)
MyFrame1(None).Show()
app.MainLoop()