Checkboxes and Radio Buttons in wxPython - wxRadioButton
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Radio buttons are useful when you want the user to select one item out of a list of multiple items. Alternatively, the user can check a single radio button that cannot be unchecked. A group of radio buttons is started by setting the style wxRB_GROUP on the first button, and a lone radio button is created by setting wxRB_SINGLE as the style. Let's put together an application that uses radio buttons:
from wxPython.wx import *
class Window ( wxFrame ):
def __init__ ( self ):
wxFrame.__init__ ( self, None, -1, 'Ballot' )
# Create a panel, like we always do
self.panel = wxPanel ( self, -1 )
# Create a grid layout
self.sizer = wxGridBagSizer ( 2, 10 )
# Create one group of buttons ( plus a label ) and add them
# We mark the beginning of the group with wxRB_GROUP
self.president1 = wxRadioButton ( self.panel, -1, 'CharlesFagundes', style = wxRB_GROUP )
self.president2 = wxRadioButton ( self.panel, -1, 'TerriWells' )
self.sizer.Add ( wxStaticText ( self.panel, -1, 'President' ), ( 0, 0 ) )
self.sizer.Add ( self.president1, ( 1, 0 ) )
self.sizer.Add ( self.president2, ( 2, 0 ) )
# Create another group of radio buttons
self.senator1 = wxRadioButton ( self.panel, -1, 'Peyton McCullough', style = wxRB_GROUP )
self.senator2 = wxRadioButton ( self.panel, -1, 'Alejandro Gervasio' )
self.senator3 = wxRadioButton ( self.panel, -1, 'Jagadish Chatarji' )
self.senator4 = wxRadioButton ( self.panel, -1, 'Michael Swanson' )
self.sizer.Add ( wxStaticText ( self.panel, -1, 'Senator' ), ( 0, 1 ) )
self.sizer.Add ( self.senator1, ( 1, 1 ) )
self.sizer.Add ( self.senator2, ( 2, 1 ) )
self.sizer.Add ( self.senator3, ( 3, 1 ) )
self.sizer.Add ( self.senator4, ( 4, 1 ) )
# Create yet another group of radio buttons
# These will not be in a group
# We'll also create a button, which will be activated if both boxes are checked
self.term1 = wxRadioButton ( self.panel, 1, 'This is my only ballot.', style = wxRB_SINGLE )
self.term2 = wxRadioButton ( self.panel, 1, 'I swear it is!', style = wxRB_SINGLE )
self.button = wxButton ( self.panel, 2, 'Submit' )
self.button.Disable()
self.sizer.Add ( wxStaticText ( self.panel, -1, 'Agreement' ), ( 0, 2 ) )
self.sizer.Add ( self.term1, ( 1, 2 ) )
self.sizer.Add ( self.term2, ( 2, 2 ) )
self.sizer.Add ( self.button, ( 3, 2 ), ( 2, 1 ), wxALIGN_CENTER )
# Hook up events to the three controls above
EVT_RADIOBUTTON ( self.panel, 1, self.confirm )
EVT_BUTTON ( self.panel, 2, self.vote )
# Attach our sizer to our panel
self.panel.SetSizerAndFit ( self.sizer )
# Resize the window
self.sizer.Fit ( self )
self.Show ( True )
# This will check to see if term1 and term2 have both been clicked
# If so, the button will be disabled
def confirm ( self, event ):
if ( self.term1.GetValue() == True ) & ( self.term2.GetValue() == True ):
self.button.Enable()
# Here, we will send a message to the user and reset everything
def vote ( self, event ):
# Show a dialog
dialog = wxMessageDialog ( self, 'Thank you for your vote.', 'Thank You', style = wxOK )
dialog.ShowModal()
dialog.Destroy()
# Reset things
self.president1.SetValue ( True )
self.senator1.SetValue ( True )
self.term1.SetValue ( False )
self.term2.SetValue ( False )
self.button.Disable()
application = wxPySimpleApp()
Window()
application.MainLoop()
Simple, huh?
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