wxListBox is versatile - PythonControls are, obviously, essential to your wxPython applications. They allow you to gather input from the user so that you can make decisions based on that input. Let's take a close look at a few controls availible to you and your applications. This article will cover wxChoice, wxComboBox, wxListBox and wxTextCtrl. It is the third one in a series about wxPython.
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The wxListBox control supports multiple selections. We must handle this differently as well: from wxPython.wx import * class OurFrame ( wxFrame ): def __init__ ( self ): wxFrame.__init__ ( self, None, -1, 'wxPython' ) self.panel = wxPanel ( self, -1 ) self.list = wxListBox ( self.panel, -1, choices = [ '1', '2', '3', '4' ], style = wxLB_MULTIPLE ) self.button = wxButton ( self.panel, 100, 'Click Me...now.' ) EVT_BUTTON ( self.panel, 100, self.click ) self.sizer = wxBoxSizer ( wxVERTICAL ) self.sizer.Add ( self.list, 0 ) self.sizer.Add ( self.button, 0 ) self.panel.SetSizerAndFit ( self.sizer ) self.Show ( True ) def click ( self, event ): selections = self.list.GetSelections() if len ( selections ) > 1: for selection in selections: print 'Multiple Selected:', self.list.GetString ( selection ) else: print 'Single Selected:', self.list.GetString ( selections [ 0 ] ) application = wxPySimpleApp() window = OurFrame() application.MainLoop() We can insert a whole list of items rather than one at a time, and we can also reset the list entirely, without using Clear: from wxPython.wx import * class OurFrame ( wxFrame ): def __init__ ( self ): wxFrame.__init__ ( self, None, -1, 'wxPython' ) self.panel = wxPanel ( self, -1 ) self.list = wxListBox ( self.panel, -1, choices = [ '1', '2', '3', '4' ] ) # Reset it self.list.Set ( [ 'Choice 1', 'Choice 2', 'Choice 3', 'Choice 4' ] ) # Add some more items self.list.InsertItems ( [ 'Choice 5', 'Choice 6', 'Choice 7', 'Choice 8', 'Choice 9', 'Choice 10' ], 4 ) self.lilst.InsertItems ( [ 'Choice 0' ], 0 ) self.sizer = wxBoxSizer ( wxVERTICAL ) self.sizer.Add ( self.list, 0 ) self.panel.SetSizerAndFit ( self.sizer ) self.Show ( True ) application = wxPySimpleApp() window = OurFrame() application.MainLoop() Finally, let's look at some events: from wxPython.wx import * class OurFrame ( wxFrame ): def __init__ ( self ): wxFrame.__init__ ( self, None, -1, 'wxPython' ) self.panel = wxPanel ( self, -1 ) self.list = wxListBox ( self.panel, 100, choices = [ 'One', 'Two', 'Three', 'Four' ] ) self.combo = wxComboBox ( self.panel, 200, choices = [ 'Red', 'Blue', 'Green', 'Pink' ] ) EVT_LISTBOX ( self.panel, 100, self.click) EVT_LISTBOX_DCLICK ( self.panel, 100, self.listDouble ) EVT_COMBOBOX ( self.panel, 200, self.click ) EVT_TEXT_ENTER ( self.panel, 200, self.comboEnter ) EVT_TEXT ( self.panel, 200, self.comboText ) self.sizer = wxBoxSizer ( wxVERTICAL ) self.sizer.Add ( self.list, 0 ) self.sizer.Add ( self.combo, 0 ) self.panel.SetSizerAndFit ( self.sizer ) self.Show ( True ) def click ( self, event ): print 'Single click.' def listDouble ( self, event ): print 'Double click.' def comboEnter ( self, event ): print 'You pressed enter in the wxComboBox.' def comboText ( self, event ): print 'You changed the text in the wxComboBox.' application = wxPySimpleApp() window = OurFrame() application.MainLoop()
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