Python体验(10)-图形界面之计算器
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1 import wx 2 class Form(wx.Frame): 3 def __init__( self, parent, id, title ): 4 wx.Frame.__init__(self,parent,id,title,wx.DefaultPosition,wx.Size(300, 250)) 5 self.formula = False 6 menuBar = wx.MenuBar() 7 mnuFile = wx.Menu() 8 mnuFile.Append( 22, ‘&Quit‘, ‘Exit Calculator‘ ) 9 menuBar.Append( mnuFile, ‘&File‘ ) 10 wx.EVT_MENU( self, 22, self.OnClose ) 11 self.SetMenuBar( menuBar ) 12 13 self.display = wx.TextCtrl(self, -1, ‘‘, style=wx.TE_RIGHT) 14 gs = wx.GridSizer(5, 4, 3, 3) 15 gs.AddMany( 16 [ 17 (wx.Button(self, 12, ‘-‘), 0, wx.EXPAND), 18 (wx.Button(self, 20, ‘Cls‘), 0, wx.EXPAND), 19 (wx.Button(self, 21, ‘Bck‘), 0, wx.EXPAND), 20 (wx.StaticText(self, -1, ‘‘), 0, wx.EXPAND), 21 (wx.Button(self, 22, ‘Close‘), 0, wx.EXPAND), 22 (wx.Button(self, 1, ‘7‘), 0, wx.EXPAND), 23 (wx.Button(self, 2, ‘8‘), 0, wx.EXPAND), 24 (wx.Button(self, 3, ‘9‘), 0, wx.EXPAND), 25 (wx.Button(self, 4, ‘/‘), 0, wx.EXPAND), 26 (wx.Button(self, 5, ‘4‘), 0, wx.EXPAND), 27 (wx.Button(self, 6, ‘5‘), 0, wx.EXPAND), 28 (wx.Button(self, 7, ‘6‘), 0, wx.EXPAND), 29 (wx.Button(self, 8, ‘*‘), 0, wx.EXPAND), 30 (wx.Button(self, 10, ‘2‘), 0, wx.EXPAND), 31 (wx.Button(self, 11, ‘3‘), 0, wx.EXPAND), 32 (wx.Button(self, 9, ‘1‘), 0, wx.EXPAND), 33 (wx.Button(self, 16, ‘+‘), 0, wx.EXPAND), 34 (wx.Button(self, 15, ‘=‘), 0, wx.EXPAND), 35 (wx.Button(self, 14, ‘.‘), 0, wx.EXPAND), 36 (wx.Button(self, 13, ‘0‘), 0, wx.EXPAND) 37 ] 38 ) 39 sizer = wx.BoxSizer( wx.VERTICAL ) 40 sizer.Add(self.display, 0, wx.EXPAND|wx.TOP|wx.BOTTOM, 4) 41 sizer.Add(gs, 1, wx.EXPAND) 42 self.SetSizer(sizer) 43 self.Centre() 44 45 wx.EVT_BUTTON(self, 20, self.OnClear) 46 wx.EVT_BUTTON(self, 21, self.OnBackspace) 47 wx.EVT_BUTTON(self, 22, self.OnClose) 48 wx.EVT_BUTTON(self, 1, self.OnNumber) 49 wx.EVT_BUTTON(self, 2, self.OnNumber) 50 wx.EVT_BUTTON(self, 3, self.OnNumber) 51 wx.EVT_BUTTON(self, 4, self.OnFormula) 52 wx.EVT_BUTTON(self, 5, self.OnNumber) 53 wx.EVT_BUTTON(self, 6, self.OnNumber) 54 wx.EVT_BUTTON(self, 7, self.OnNumber) 55 wx.EVT_BUTTON(self, 8, self.OnFormula) 56 wx.EVT_BUTTON(self, 9, self.OnNumber) 57 wx.EVT_BUTTON(self, 10, self.OnNumber) 58 wx.EVT_BUTTON(self, 11, self.OnNumber) 59 wx.EVT_BUTTON(self, 12, self.OnFormula) 60 wx.EVT_BUTTON(self, 13, self.OnNumber) 61 wx.EVT_BUTTON(self, 14, self.OnFormula) 62 wx.EVT_BUTTON(self, 15, self.OnEqual) 63 wx.EVT_BUTTON(self, 16, self.OnFormula) 64 65 def OnClear(self, event): 66 self.display.Clear() 67 def OnBackspace(self, event): 68 formula = self.display.GetValue() 69 self.display.Clear() 70 self.display.SetValue(formula[:-1]) 71 def OnClose(self, event): 72 self.Close() 73 def OnEqual(self,event): 74 if self.formula: 75 return 76 formula = self.display.GetValue() 77 self.formula = True 78 try: 79 self.display.Clear() 80 output = eval(formula) 81 self.display.AppendText(str(output)) 82 except StandardError: 83 self.display.AppendText("Error") 84 85 def OnFormula(self,event): 86 if self.formula: 87 return 88 self.display.AppendText(event.EventObject.LabelText) 89 90 def OnNumber(self,event): 91 if self.formula: 92 self.display.Clear() 93 self.formula=False 94 self.display.AppendText(event.EventObject.LabelText) 95 96 class MyApp(wx.App): 97 def OnInit(self): 98 frame = Form(None, -1, "Phoenix Caculator") 99 frame.Show(True) 100 self.SetTopWindow(frame) 101 return True 102 103 app = MyApp(0) 104 app.MainLoop()
import wx class Form(wx.Frame): def __init__( self, parent, id, title ): wx.Frame.__init__(self,parent,id,title,wx.DefaultPosition,wx.Size(300, 250)) self.formula = False menuBar = wx.MenuBar() mnuFile = wx.Menu() mnuFile.Append( 22, ‘&Quit‘, ‘Exit Calculator‘ ) menuBar.Append( mnuFile, ‘&File‘ ) wx.EVT_MENU( self, 22, self.OnClose ) self.SetMenuBar( menuBar ) self.display = wx.TextCtrl(self, -1, ‘‘, style=wx.TE_RIGHT) gs = wx.GridSizer(5, 4, 3, 3) gs.AddMany( [ (wx.Button(self, 12, ‘-‘), 0, wx.EXPAND), (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, 10, ‘2‘), 0, wx.EXPAND), (wx.Button(self, 11, ‘3‘), 0, wx.EXPAND), (wx.Button(self, 9, ‘1‘), 0, wx.EXPAND), (wx.Button(self, 16, ‘+‘), 0, wx.EXPAND), (wx.Button(self, 15, ‘=‘), 0, wx.EXPAND), (wx.Button(self, 14, ‘.‘), 0, wx.EXPAND), (wx.Button(self, 13, ‘0‘), 0, wx.EXPAND) ] ) sizer = wx.BoxSizer( wx.VERTICAL ) sizer.Add(self.display, 0, wx.EXPAND|wx.TOP|wx.BOTTOM, 4) 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.OnNumber) wx.EVT_BUTTON(self, 2, self.OnNumber) wx.EVT_BUTTON(self, 3, self.OnNumber) wx.EVT_BUTTON(self, 4, self.OnFormula) wx.EVT_BUTTON(self, 5, self.OnNumber) wx.EVT_BUTTON(self, 6, self.OnNumber) wx.EVT_BUTTON(self, 7, self.OnNumber) wx.EVT_BUTTON(self, 8, self.OnFormula) wx.EVT_BUTTON(self, 9, self.OnNumber) wx.EVT_BUTTON(self, 10, self.OnNumber) wx.EVT_BUTTON(self, 11, self.OnNumber) wx.EVT_BUTTON(self, 12, self.OnFormula) wx.EVT_BUTTON(self, 13, self.OnNumber) wx.EVT_BUTTON(self, 14, self.OnFormula) wx.EVT_BUTTON(self, 15, self.OnEqual) wx.EVT_BUTTON(self, 16, self.OnFormula) 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 OnEqual(self,event): if self.formula: return formula = self.display.GetValue() self.formula = True try: self.display.Clear() output = eval(formula) self.display.AppendText(str(output)) except StandardError: self.display.AppendText("Error") def OnFormula(self,event): if self.formula: return self.display.AppendText(event.EventObject.LabelText) def OnNumber(self,event): if self.formula: self.display.Clear() self.formula=False self.display.AppendText(event.EventObject.LabelText) class MyApp(wx.App): def OnInit(self): frame = Form(None, -1, "Phoenix Caculator") frame.Show(True) self.SetTopWindow(frame) return True app = MyApp(0) app.MainLoop()
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