Python 2.7 Python-Tkinter在子窗口上设置退出按钮的正确方法以及它如何影响切换按钮
我是一个试图用树莓圆周率学习Python的新手。我一直在写一些代码,试图为piFace插件板制作一个简单的模拟器 这其中有一些问题,我在努力解决这些问题的同时也在学习 该代码打开一个主窗口,显示八个切换按钮,每个按钮切换LED的开/关。我还添加了一个打开子窗口的按钮。 子窗口有两个按钮。一个是开/关切换按钮,使8个LED像骑士一样来回流动,另一个是退出按钮 我的问题是,如果我使用退出按钮,当LED来回流动时,子窗口会关闭,这是应该的。但是,如果我重新打开子窗口并使用切换按钮打开流式LED,则什么也不会发生。如果我再次按下切换按钮,LED开始正常发光 我有点理解问题所在。因为我在LED发光时关闭窗口,所以切换按钮状态仍处于打开状态。当我重新打开窗口并单击切换按钮时,我只是将切换按钮状态设置为关闭 我不知道如何解决这个问题。我是否应该以另一种可能正确的方式来看待关闭窗口?我应该看看一种预设拨动开关状态的方法吗?我应该试试完全不同的吗?我应该完全停止吗?:-) 我希望这有点道理 谢谢你的帮助 这是我的密码Python 2.7 Python-Tkinter在子窗口上设置退出按钮的正确方法以及它如何影响切换按钮,python-2.7,tkinter,raspberry-pi,exit,togglebutton,Python 2.7,Tkinter,Raspberry Pi,Exit,Togglebutton,我是一个试图用树莓圆周率学习Python的新手。我一直在写一些代码,试图为piFace插件板制作一个简单的模拟器 这其中有一些问题,我在努力解决这些问题的同时也在学习 该代码打开一个主窗口,显示八个切换按钮,每个按钮切换LED的开/关。我还添加了一个打开子窗口的按钮。 子窗口有两个按钮。一个是开/关切换按钮,使8个LED像骑士一样来回流动,另一个是退出按钮 我的问题是,如果我使用退出按钮,当LED来回流动时,子窗口会关闭,这是应该的。但是,如果我重新打开子窗口并使用切换按钮打开流式LED,则什么
# Idle 10_01_2014_GUI label image toggle
from time import sleep
import piface.pfio as pfio
pfio.init()
from Tkinter import *
import Tkinter as tk
import threading
class App:
def __init__(self, master):
self.master=master
frame = Frame(master)
frame.pack()
Label(frame, text='Turn LED ON').grid(row=0, column=0)
Label(frame, text='Turn LED OFF').grid(row=0, column=1)
self.button0 = Button(frame, text='LED 0 OFF', command=self.convert0)
self.button0.grid(row=2, column=0)
self.LED0 = Label(frame, image=logo2)
self.LED0.grid(row=2, column=1)
self.button1 = Button(frame, text='LED 1 OFF', command=self.convert1)
self.button1.grid(row=3, column=0)
self.LED1 = Label(frame, image=logo2)
self.LED1.grid(row=3, column=1)
self.button2 = Button(frame, text='LED 2 OFF', command=self.convert2)
self.button2.grid(row=4, column=0)
self.LED2 = Label(frame, image=logo2)
self.LED2.grid(row=4, column=1)
self.button3 = Button(frame, text='LED 3 OFF', command=self.convert3)
self.button3.grid(row=5, column=0)
self.LED3 = Label(frame, image=logo2)
self.LED3.grid(row=5, column=1)
self.button4 = Button(frame, text='LED 4 OFF', command=self.convert4)
self.button4.grid(row=6, column=0)
self.LED4 = Label(frame, image=logo2)
self.LED4.grid(row=6, column=1)
self.button5 = Button(frame, text='LED 5 OFF', command=self.convert5)
self.button5.grid(row=7, column=0)
self.LED5 = Label(frame, image=logo2)
self.LED5.grid(row=7, column=1)
self.button6 = Button(frame, text='LED 6 OFF', command=self.convert6)
self.button6.grid(row=8, column=0)
self.LED6 = Label(frame, image=logo2)
self.LED6.grid(row=8, column=1)
self.button7 = Button(frame, text='LED 7 OFF', command=self.convert7)
self.button7.grid(row=9, column=0)
self.LED7 = Label(frame, image=logo2)
self.LED7.grid(row=9, column=1)
self.buttonnewwindow = Button(frame, text='Knight Rider TEST', command=self.new_window)
self.buttonnewwindow.grid(row=10, column=0)
self.button8 = Button(frame, text='Exit', command=quit)
self.button8.grid(row=11, column=0)
def convert0(self, tog=[0]):
tog[0] = not tog[0]
if tog[0]:
print('LED 0 ON')
self.button0.config(text='LED 0 ON')
self.LED0.config(image = logo)
self.LED0.grid(row=2, column=2)
pfio.digital_write(0,1) #turn on
else:
print('LED 0 OFF')
self.button0.config(text='LED 0 OFF')
self.LED0.config(image = logo2)
self.LED0.grid(row=2, column=1)
pfio.digital_write(0,0) #turn off
def convert1(self, tog=[0]):
tog[0] = not tog[0]
if tog[0]:
print('LED 1 ON')
self.button1.config(text='LED 1 ON')
self.LED1.config(image = logo)
pfio.digital_write(1,1) #turn on
else:
print('LED 1 OFF')
self.button1.config(text='LED 1 OFF')
self.LED1.config(image = logo2)
pfio.digital_write(1,0) #turn off
def convert2(self, tog=[0]):
tog[0] = not tog[0]
if tog[0]:
print('LED 2 ON')
self.button2.config(text='LED 2 ON')
self.LED2.config(image = logo)
pfio.digital_write(2,1) #turn on
else:
print('LED 2 OFF')
self.button2.config(text='LED 2 OFF')
self.LED2.config(image = logo2)
pfio.digital_write(2,0) #turn off
def convert3(self, tog=[0]):
tog[0] = not tog[0]
if tog[0]:
print('LED 3 ON')
self.button3.config(text='LED 3 ON')
self.LED3.config(image = logo)
pfio.digital_write(3,1) #turn on
else:
print('LED 3 OFF')
self.button2.config(text='LED 3 OFF')
self.LED3.config(image = logo2)
pfio.digital_write(3,0) #turn off
def convert4(self, tog=[0]):
tog[0] = not tog[0]
if tog[0]:
print('LED 4 ON')
self.button4.config(text='LED 4 ON')
self.LED4.config(image = logo)
pfio.digital_write(4,1) #turn on
else:
print('LED 4 OFF')
self.button4.config(text='LED 4 OFF')
self.LED4.config(image = logo2)
pfio.digital_write(4,0) #turn off
def convert5(self, tog=[0]):
tog[0] = not tog[0]
if tog[0]:
print('LED 5 ON')
self.button5.config(text='LED 5 ON')
self.LED5.config(image = logo)
pfio.digital_write(5,1) #turn on
else:
print('LED 5 OFF')
self.button5.config(text='LED 5 OFF')
self.LED5.config(image = logo2)
pfio.digital_write(5,0) #turn off
def convert6(self, tog=[0]):
tog[0] = not tog[0]
if tog[0]:
print('LED 6 ON')
self.button6.config(text='LED 6 ON')
self.LED6.config(image = logo)
pfio.digital_write(6,1) #turn on
else:
print('LED 6 OFF')
self.button6.config(text='LED OFF')
self.LED6.config(image = logo2)
pfio.digital_write(6,0) #turn off
def convert7(self, tog=[0]):
tog[0] = not tog[0]
if tog[0]:
print('LED 7 ON')
self.button7.config(text='LED 7 ON')
self.LED7.config(image = logo)
pfio.digital_write(7,1) #turn on
else:
print('LED 7 OFF')
self.button7.config(text='LED OFF')
self.LED7.config(image = logo2)
pfio.digital_write(7,0) #turn off
def new_window(self):
print('New Window')
self.newWindow = tk.Toplevel(self.master)
self.app = App2(self.newWindow)
self.newWindow.grab_set() # I added this line to stop opening multiple new windows
class App2:
def __init__(self, master):
self.signal = False #added to stop thread
print('self.signal', self.signal)
self.master=master # I added this line to make the exit button work
frame = Frame(master)
frame.pack()
Label(frame, text='Turn LED ON').grid(row=0, column=0)
Label(frame, text='Turn LED OFF').grid(row=0, column=1)
self.button0 = Button(frame, text='Knight Rider OFF', command=self.convert0)
self.button0.grid(row=2, column=0)
self.LED0 = Label(frame, image=logo2)
self.LED0.grid(row=2, column=1)
self.button9 = Button(frame, text='Exit', command=self.close_window)
self.button9.grid(row=3, column=0)
def convert0(self, tog=[0]):
tog[0] = not tog[0]
if tog[0]:
print('Knight Rider ON')
self.button0.config(text='Knight Rider ON')
t=threading.Thread(target=self.LED)
t.start()
self.signal = True #added to stop thread
print('self.signal', self.signal)
print('tog[0]', tog[0])
self.LED0.config(image = logo)
else:
print('Knight Rider OFF')
self.button0.config(text='Knight Rider OFF')
self.signal = False #added to stop thread
print('self.signal', self.signal)
print('tog[0]', tog[0])
self.LED0.config(image = logo2)
def LED(self):
while self.signal: #added to stop thread
a=0
while self.signal: #added to stop thread
pfio.digital_write(a,1) #turn on
sleep(0.05)
pfio.digital_write(a,0) #turn off
sleep(0.05)
a=a+1
if a==7:
break
while self.signal: #added to stop thread
pfio.digital_write(a,1) #turn on
sleep(0.05)
pfio.digital_write(a,0) #turn off
sleep(0.05)
a=a-1
if a==0:
break
def close_window(self):
print('Knight Rider OFF')
print('self.signal', self.signal)
self.button0.config(text='Knight Rider OFF')
self.LED0.config(image = logo2)
self.signal = False #added to stop thread
print('self.signal', self.signal)
sleep(1)
print('Close Child window')
self.master.destroy() # I added this line to make the exit button work
root = Tk()
logo2 = PhotoImage(file="/home/pi/Off LED.gif")
logo = PhotoImage(file="/home/pi/Red LED.gif")
root.wm_title('LED on & off program')
app = App(root)
root.mainloop()
如果您希望在打开新窗口时将LED设置为off,则可以使用class属性并根据需要进行设置。在这个例子中,所有多余的积垢都被清除了。如果这不是你想要的,然后发回
class App:
def __init__(self):
master=Tk()
self.master=master
frame = Frame(master)
frame.grid()
Label(frame, text='Turn LED ON').grid(row=0, column=0)
Label(frame, text='Turn LED OFF').grid(row=0, column=1)
self.toggle=0
self.newWindow=False
self.button0 = Button(frame, text='LED 0 OFF', command=self.convert0)
self.button0.grid(row=2, column=0)
self.LED0 = Label(frame, text="Label")
self.LED0.grid(row=2, column=1)
self.buttonnewwindow = Button(frame, text='New Window',
command=self.new_window)
self.buttonnewwindow.grid(row=10, column=0)
self.button8 = Button(frame, text='Exit', command=quit)
self.button8.grid(row=11, column=0)
master.mainloop()
def convert0(self):
self.toggle=not self.toggle
if self.toggle:
print('LED 0 ON')
self.button0.config(text='LED 0 ON')
##self.LED0.config(image = logo)
##self.LED0.grid(row=2, column=2)
##pfio.digital_write(0,1) #turn on
else:
print('LED 0 OFF')
self.button0.config(text='LED 0 OFF')
##self.LED0.config(image = logo2)
##self.LED0.grid(row=2, column=1)
##pfio.digital_write(0,0) #turn off
def new_window(self):
print('New Window')
if not self.newWindow:
self.newWindow = Toplevel(self.master)
Button(self.newWindow, text="Close Window", command=self.newWindow.destroy).grid()
##self.app = App2(self.newWindow)
##self.newWindow.grab_set() # I added this line to stop opening multiple new windows
self.toggle=1
self.convert0()
self.newWindow=False
App()
你可以试着提出你的例子的一个提炼版本。由于依赖关系,大多数人无法运行此代码。试着创建一个最小的例子来演示这个问题。你的代码比它需要的复杂得多。例如,您不需要线程来完成您要做的事情。Tkinter小部件在之后有一个名为
的方法,可用于动画或按计划调用函数。@Aivar是的,我将制作一个抽象版本并发布它。谢谢你的建议。@Bryan Oakley是的,我想这比它需要的更复杂,但我正在学习,他们似乎有很多方法来做事情,线程是我在这个例子中尝试过的方法,但我会研究你提到的“之后”的事情。谢谢你的建议。我采纳了其中一位评论者的建议,对我的问题进行了提炼,并将其发布。谢谢你的例子。作为一个新手,我花了一点时间来分解它并理解它是如何工作的。