self.SetMenuBar( menubar )
wx.EVT_MENU( self, 22, self.OnClose )
sizer = wx.BoxSizer( wx.VERTICAL )
self.display = wx.TextCtrl(self, -1, '', style=wx.TE_RIGHT)
sizer.Add(self.display, 0, wx.EXPAND|wx.TOP|wx.BOTTOM, 4)
gs = wx.GridSizer(4, 4, 3, 3)
gs.AddMany([(wx.Button(self, 20, 'Cls'), 0, wx.EXPAND),
(wx.Button(self, 21, 'Bck'), 0, wx.EXPAND),
(wx.StaticText(self, -1, ''), 0, wx.EXPAND),
(wx.Button(self, 22, 'Close'), 0, wx.EXPAND),
(wx.Button(self, 1, '7'), 0, wx.EXPAND),
(wx.Button(self, 2, '8'), 0, wx.EXPAND),
(wx.Button(self, 3, '9'), 0, wx.EXPAND),
(wx.Button(self, 4, '/'), 0, wx.EXPAND),
(wx.Button(self, 5, '4'), 0, wx.EXPAND),
(wx.Button(self, 6, '5'), 0, wx.EXPAND),
(wx.Button(self, 7, '6'), 0, wx.EXPAND),
(wx.Button(self, 8, '*'), 0, wx.EXPAND),
(wx.Button(self, 9, '1'), 0, wx.EXPAND),
(wx.Button(self, 10, '2'), 0, wx.EXPAND),
(wx.Button(self, 11, '3'), 0, wx.EXPAND),
(wx.Button(self, 12, '-'), 0, wx.EXPAND),
(wx.Button(self, 13, '0'), 0, wx.EXPAND),
(wx.Button(self, 14, '.'), 0, wx.EXPAND),
(wx.Button(self, 15, '='), 0, wx.EXPAND),
(wx.Button(self, 16, '+'), 0, wx.EXPAND)])
sizer.Add(gs, 1, wx.EXPAND)
self.SetSizer(sizer)
self.Centre()
wx.EVT_BUTTON(self, 20, self.OnClear)
wx.EVT_BUTTON(self, 21, self.OnBackspace)
wx.EVT_BUTTON(self, 22, self.OnClose)
wx.EVT_BUTTON(self, 1, self.OnSeven)
wx.EVT_BUTTON(self, 2, self.OnEight)
wx.EVT_BUTTON(self, 3, self.OnNine)
wx.EVT_BUTTON(self, 4, self.OnDivide)
wx.EVT_BUTTON(self, 5, self.OnFour)
wx.EVT_BUTTON(self, 6, self.OnFive)
wx.EVT_BUTTON(self, 7, self.OnSix)
wx.EVT_BUTTON(self, 8, self.OnMultiply)
wx.EVT_BUTTON(self, 9, self.OnOne)
wx.EVT_BUTTON(self, 10, self.OnTwo)
wx.EVT_BUTTON(self, 11, self.OnThree)
wx.EVT_BUTTON(self, 12, self.OnMinus)
wx.EVT_BUTTON(self, 13, self.OnZero)
wx.EVT_BUTTON(self, 14, self.OnDot)
wx.EVT_BUTTON(self, 15, self.OnEqual)
wx.EVT_BUTTON(self, 16, self.OnPlus)
def OnClear(self, event):
self.display.Clear()
def OnBackspace(self, event):
formula = self.display.GetValue()
self.display.Clear()
self.display.SetValue(formula[:-1])
def OnClose(self, event):
self.Close()
def OnDivide(self, event):
if self.formula:
return
self.display.AppendText('/')
def OnMultiply(self, event):
if self.formula:
return
self.display.AppendText('*')
def OnMinus(self, event):
if self.formula:
return
self.display.AppendText('-')
def OnPlus(self, event):
if self.formula:
