Python 从其他Tkinter程序调用时不显示标签
我写了一个有起始页的程序,还有两个从起始页调用的程序。这两个子程序都是自己工作的。然而,当我把它们放进我的起始页时,秒表计时标签并没有显示出来。如果您想知道,我会通过以下方式将它们放入我的程序中:Python 从其他Tkinter程序调用时不显示标签,python,tkinter,Python,Tkinter,我写了一个有起始页的程序,还有两个从起始页调用的程序。这两个子程序都是自己工作的。然而,当我把它们放进我的起始页时,秒表计时标签并没有显示出来。如果您想知道,我会通过以下方式将它们放入我的程序中: import program program.function() 这是我的起始页程序: from Tkinter import * class start_page: def __init__(self,master): self.master = master
import program
program.function()
这是我的起始页程序:
from Tkinter import *
class start_page:
def __init__(self,master):
self.master = master
self.frame = Frame(self.master)
self.countdown = Button(master, text = "Timer", command = self.c).pack()
self.stopwatch_butt = Button(master,text="Stopwatch",command=self.g).pack()
def g(self):
import stopwatch
stopwatch.f()
def c(self):
import timer_prog
timer_prog.timer()
self.master.after_cancel(timer_prog)
def main():
root = Tk()
s = start_page(root)
root.title("Timer Suite: Brian Ton")
root.mainloop()
main()
如果我运行这个程序,计时器程序工作正常,但是秒表不显示它的标签,只显示它的按钮。我尝试在函数之后清除所有Tk,但没有成功,我还尝试先运行秒表程序,但没有成功。
这是我的秒表程序:
from Tkinter import *
import datetime
def s():
start.config(state='disabled')
stop.config(state="normal")
reset.config(state='disabled')
Start()
def Start():
if reset['state'] == 'disabled' and stop['state'] == 'normal':
hidden.set(str(int(hidden.get())+1))
root.update()
root.after(1000,Start)
curr = hidden.get()
g.set(str(datetime.timedelta(seconds=int(curr))))
print g.get()
else:
return None
def Stop():
start.config(state='disabled')
stop.config(state='disabled')
reset.config(state="normal")
def Reset():
start.config(state="normal")
stop.config(state="disabled")
reset.config(state='disabled')
hidden.set('0')
g.set(str(datetime.timedelta(seconds=0)))
def f():
global root,frame,master,hidden,g,timelabel,start,stop,reset
root = Tk()
frame = Frame(root)
master = root
hidden = StringVar()
g = StringVar()
hidden.set('0')
timelabel = Label(master,textvariable=g)
g.set(str(datetime.timedelta(seconds=int(0))))
timelabel.grid(row=1,column=2)
start = Button(master,text="Start",command = s,state="normal")
stop = Button(master,text="Stop",command = Stop,state = "disabled")
reset = Button(master,text="Reset",command = Reset,state = "disabled")
start.grid(row=2,column=1)
stop.grid(row=2,column=2)
reset.grid(row=2,column=3)
root.update()
root.mainloop()
这是我的定时器程序:
from Tkinter import *
import datetime
def get_seconds(h,m,s):
hr_sec = h * 3600
m_sec = m * 60
return hr_sec+m_sec+s
def timerstartstop():
hours = hour_entry.get()
minutes = minute_entry.get()
sec = second_entry.get()
if hours == "":
hours = 0
hour_entry.insert(0,"0")
if minutes == "":
minutes = 0
minute_entry.insert(0,"0")
if sec == "":
sec = 0
second_entry.insert(0,"0")
c = get_seconds(int(hours), int(minutes), int(sec))
global s
s = StringVar(master)
s.set(c)
if startstop['text'] == 'Stop':
global curr
curr = shown
s.set(-1)
if startstop['text'] == 'Reset':
startstop.config(text="Start")
s.set(c)
root.update()
shown.set(str(datetime.timedelta(seconds=int(s.get()))))
return None
countdown()
import winsound
def countdown():
startstop.config(text="Stop")
global shown
good = True
shown = StringVar(master)
shown.set(str(datetime.timedelta(seconds=int(s.get()))))
L = Label(master,textvariable=shown).grid(row=1,column=2)
if int(s.get()) == 0:
startstop.config(text="Reset")
while startstop['text'] != "Start":
root.update()
winsound.Beep(500,500)
elif int(s.get()) < 0:
good = False
shown.set(curr.get())
startstop.config(text="Reset")
else:
if good:
s.set(str(int(s.get())-1))
root.after(1000,countdown)
def ex():
root.after_cancel(countdown)
root.destroy()
def timer():
global root
global master
global frame
root = Tk()
master = root
frame = Frame(master)
global hour_entry
hour_entry = Entry(master,width=3)
hour_entry.grid(row=0,column=0)
colon_l = Label(master,text=':').grid(row=0,column=1)
global minute_entry
minute_entry = Entry(master,width=2)
minute_entry.grid(row=0,column=2)
colon_l2 = Label(master,text=':').grid(row=0,column=3)
global second_entry
second_entry = Entry(master,width=2)
second_entry.grid(row=0,column=4)
global startstop
startstop = Button(master,text="Start",command=timerstartstop)
e = Button(master,text="Exit",command=ex).grid(row=1,column=3)
startstop.grid(row=0,column=5)
root.mainloop()
附件是stopwatch程序的一些屏幕截图,这些截图显示了stopwatch程序在启动程序调用时的外观
注意:我可以从起始页判断程序正在运行,因为它每秒打印当前时间。另外,我附上了一些截图
Tkinter
程序应仅使用一个Tk()
-来创建主窗口,使用一个mainloop()
-来控制所有窗口和小部件。如果使用两个Tk()
和两个mainloop()
,则它有问题-例如get()/set()
可能无法工作
子窗口应该使用Toplevel()
而不是Tk()
启动程序的函数(即run()
)可以使用参数window
(def run(window)
)运行,然后您可以使用
root = Tk()
run(root)
root.mainloop()
或者在导入之后
run(Toplevel())
(不带maniloop()
)
您可以使用if\uuuuu name\uuuu==“\uuuuu main\uuuu”
来识别程序是否以独立方式启动
范例
main.py
from Tkinter import *
class StartPage:
def __init__(self, master):
self.master = master
master.title("Timer Suite: Brian Ton")
Button(master, text="Timer", command=self.run_timer).pack()
Button(master, text="Stopwatch", command=self.run_stopwatch).pack()
def run_stopwatch(self):
import stopwatch
window = Toplevel()
stopwatch.run(window)
def run_timer(self):
import timer_prog
window = Toplevel()
timer_prog.timer(window)
self.master.after_cancel(timer_prog)
def main():
root = Tk()
StartPage(root)
root.mainloop()
main()
from Tkinter import *
import datetime
def pre_start():
start_button.config(state='disabled')
stop_button.config(state='normal')
reset_button.config(state='disabled')
start()
def start():
global current_time
# stop_button['state'] can be 'normal' or 'active' so better use ` != 'disabled'`
if reset_button['state'] == 'disabled' and stop_button['state'] != 'disabled':
current_time += 1
time_var.set(str(datetime.timedelta(seconds=current_time)))
print(time_var.get())
master.after(1000, start)
def stop():
start_button.config(state='disabled')
stop_button.config(state='disabled')
reset_button.config(state='normal')
def reset():
global current_time
start_button.config(state='normal')
stop_button.config(state='disabled')
reset_button.config(state='disabled')
current_time = 0
time_var.set(str(datetime.timedelta(seconds=0)))
def run(window):
global master
global current_time, time_var
global start_button, stop_button, reset_button
master = window
current_time = 0
time_var = StringVar()
time_var.set(str(datetime.timedelta(seconds=0)))
time_label = Label(window, textvariable=time_var)
time_label.grid(row=1, column=2)
start_button = Button(master, text='Start', command=pre_start, state='normal')
stop_button = Button(master, text='Stop', command=stop, state='disabled')
reset_button = Button(master, text='Reset', command=reset, state='disabled')
start_button.grid(row=2, column=1)
stop_button.grid(row=2, column=2)
reset_button.grid(row=2, column=3)
if __name__ == '__main__':
# it runs only in standalone program
root = Tk()
run(root)
root.mainloop()
秒表.py
from Tkinter import *
class StartPage:
def __init__(self, master):
self.master = master
master.title("Timer Suite: Brian Ton")
Button(master, text="Timer", command=self.run_timer).pack()
Button(master, text="Stopwatch", command=self.run_stopwatch).pack()
def run_stopwatch(self):
import stopwatch
window = Toplevel()
stopwatch.run(window)
def run_timer(self):
import timer_prog
window = Toplevel()
timer_prog.timer(window)
self.master.after_cancel(timer_prog)
def main():
root = Tk()
StartPage(root)
root.mainloop()
main()
from Tkinter import *
import datetime
def pre_start():
start_button.config(state='disabled')
stop_button.config(state='normal')
reset_button.config(state='disabled')
start()
def start():
global current_time
# stop_button['state'] can be 'normal' or 'active' so better use ` != 'disabled'`
if reset_button['state'] == 'disabled' and stop_button['state'] != 'disabled':
current_time += 1
time_var.set(str(datetime.timedelta(seconds=current_time)))
print(time_var.get())
master.after(1000, start)
def stop():
start_button.config(state='disabled')
stop_button.config(state='disabled')
reset_button.config(state='normal')
def reset():
global current_time
start_button.config(state='normal')
stop_button.config(state='disabled')
reset_button.config(state='disabled')
current_time = 0
time_var.set(str(datetime.timedelta(seconds=0)))
def run(window):
global master
global current_time, time_var
global start_button, stop_button, reset_button
master = window
current_time = 0
time_var = StringVar()
time_var.set(str(datetime.timedelta(seconds=0)))
time_label = Label(window, textvariable=time_var)
time_label.grid(row=1, column=2)
start_button = Button(master, text='Start', command=pre_start, state='normal')
stop_button = Button(master, text='Stop', command=stop, state='disabled')
reset_button = Button(master, text='Reset', command=reset, state='disabled')
start_button.grid(row=2, column=1)
stop_button.grid(row=2, column=2)
reset_button.grid(row=2, column=3)
if __name__ == '__main__':
# it runs only in standalone program
root = Tk()
run(root)
root.mainloop()
tkinter
程序应仅使用一个Tk()
(主窗口)和一个mainloop()
。您运行了许多Tk()
和mainloop()
,所以它可能会产生问题。主程序应使用Tk()
和mainloop()
,其他程序应使用Toplevel()
而不使用mainloop()
,然后作为主程序的一部分运行。只有在作为独立程序运行时,它们才应该使用Tk()
和mainloop()
。顺便说一下:如果作为独立程序运行时,可以使用,而导入时则为false。谢谢,我以前这样做过,但是这次我就是找不到错误。