我对 Python 很陌生，甚至对 oops 很陌生，我想转换这个 stackoverflow oops 的解决方案，但它不起作用。我无法弄清楚我应该把 after、tick 和 reset 函数放在哪里才能完成这项工作。
#!/usr/bin/python
# -*- coding: iso-8859-1 -*-
import Tkinter
import time
class simpleapp_tk(Tkinter.Tk):
def __init__(self,parent):
Tkinter.Tk.__init__(self,parent)
self.parent = parent
self.running = None
self.initialize()
def initialize(self):
self.grid()
self.entryVariable = Tkinter.StringVar()
self.entry = Tkinter.Entry(self,textvariable=self.entryVariable)
self.entry.grid(column=0,row=0,sticky='EW')
self.entry.bind("<Return>", self.OnPressEnter)
self.entryVariable.set(u"Enter text here.")
button = Tkinter.Button(self,text=u"Click me !",
command=self.OnButtonClick)
button.grid(column=1,row=0)
self.labelVariable = Tkinter.StringVar()
label = Tkinter.Label(self,textvariable=self.labelVariable,
anchor="w",fg="white",bg="blue")
label.grid(column=0,row=1,columnspan=2,sticky='EW')
self.labelVariable.set(u"Hello !")
self.grid_columnconfigure(0,weight=1)
self.resizable(True,False)
self.update()
self.geometry(self.geometry())
self.entry.focus_set()
self.entry.selection_range(0, Tkinter.END)
self.after(1000, self.tick())
self.eventbind()
def OnButtonClick(self):
self.labelVariable.set( self.entryVariable.get()+" (You clicked the button)" )
self.entry.focus_set()
self.entry.selection_range(0, Tkinter.END)
def OnPressEnter(self,event):
self.labelVariable.set( self.entryVariable.get()+" (You pressed ENTER)" )
self.entry.focus_set()
self.entry.selection_range(0, Tkinter.END)
def reset(self, *ignore):
self.running = None
def tick(self, *ignore):
if not self.running:
self.running = time.time()
elif time.time() - self.running > 5:
print 'I waited 5 seconds...'
self.running = None
self.after(1000,self.tick())
def eventbind(self):
self.bind('<KEY>',self.reset())
self.bind('<Button-1>',self.reset())
if __name__ == "__main__":
app = simpleapp_tk(None)
app.title('my application')
app.mainloop()
请您参考如下方法:
不是将 tick 和 rest 函数传递给 after 和 bind 函数，你实际上调用了它们(使用 ())，所以你遇到了 stackoverflow。
self.after(1000, self.tick())
应该是
self.after(1000, self.tick)
在initialize和tick中；还有
self.bind('<KEY>',self.reset())
self.bind('<Button-1>',self.reset())
应该是
self.bind('<Key>',self.reset) # note also your type here: it's Key not KEY
self.bind('<Button-1>',self.reset)
