wxPython事件处理机制

 1 #!/usr/bin/env python
 2 
 3 #coding=utf-8
 4 
 5 import wx 
 6 
 7 class MyTestEvent(wx.PyCommandEvent):   #1 定义事件          
 8 
 9     def __init__(self, evtType, id):                 
10 
11         wx.PyCommandEvent.__init__(self, evtType, id)
12 
13         self.eventArgs = ""
14 
15         
16 
17     def GetEventArgs(self): 
18 
19         return self.eventArgs 
20 
21 
22 
23     def SetEventArgs(self, args): 
24 
25         self.eventArgs = args 
26 
27         
28 
29 myEVT_MY_TEST = wx.NewEventType() #2 创建一个事件类型   
30 
31 EVT_MY_TEST = wx.PyEventBinder(myEVT_MY_TEST, 1)  #3 创建一个绑定器对象 
32 
33 
34 
35 
36 
37 class MyFrame(wx.Frame): 
38 
39 
40 
41     def __init__(self): 
42 
43         wx.Frame.__init__(self, None, -1, "My Frame", size=(300, 300),pos=(300,300)) 
44 
45         panel = wx.Panel(self, -1) 
46 
47         self.button1 = wx.Button(panel,id=-1,pos=(40, 40),label="button1")
48 
49         self.Bind(wx.EVT_BUTTON, self.OnButton1Click, self.button1)
50 
51         self.Bind(EVT_MY_TEST, self.OnHandle)# 4绑定事件处理函数
52 
53         
54 
55     def OnButton1Click(self,event):
56 
57         self.OnDoTest()
58 
59         
60 
61     def OnHandle(self,event):#8 事件处理函数
62 
63         dlg = wx.MessageDialog(self, event.GetEventArgs(),‘A Message Box‘,wx.OK | wx.ICON_INFORMATION)
64 
65         dlg.ShowModal()
66 
67         dlg.Destroy()
68 
69         
70 
71     def OnDoTest(self):
72 
73         evt = MyTestEvent(myEVT_MY_TEST, self.button1.GetId()) #5 创建自定义事件对象   
74 
75         evt.SetEventArgs("test event")   # 6添加数据到事件 
76 
77         self.GetEventHandler().ProcessEvent(evt)  #7 处理事件 
78 
79         
80 
81 
82 
83 if __name__ == ‘__main__‘: 
84 
85     app = wx.PySimpleApp() 
86 
87     frame = MyFrame() 
88 
89     frame.Show(True) 
90 
91     app.MainLoop()