我目前正在使用GUI,我希望我的GUI在最後一幀保留5秒,然後從最後一幀返回到第一幀任何互動。如何更改tkinter中使用時間和沒有按鈕命令的幀
如果我使用after
小部件方法,那麼定時器將從應用程序的開始處開始。 如果我把它放在方法中,並且如果我調用該方法,則會出現相同的行爲。另一方面,如果我通過一個按鈕調用該函數,它將按預期工作。
控制器
# The code for changing pages was derived from:
http://stackoverflow.com/questions/7546050/switch-between-two-frames-in-tkinter
# License: http://creativecommons.org/licenses/by-sa/3.0/
import tkinter as tk
LARGE_FONT= ("Verdana", 12)
class SeaofBTCapp(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
container = tk.Frame(self)
container.pack(side="top", fill="both", expand = True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
for F in (StartPage, PageOne, PageTwo):
frame = F(container, self)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(StartPage)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
StartPage
類
class StartPage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self,parent)
label = tk.Label(self, text="Start Page", font=LARGE_FONT)
label.pack(pady=10,padx=10)
button = tk.Button(self, text="Visit Page 1",
command=lambda: controller.show_frame(PageOne))
button.pack()
button2 = tk.Button(self, text="Visit Page 2",
command=lambda: controller.show_frame(PageTwo))
button2.pack()
PageOne
類
class PageOne(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
label = tk.Label(self, text="Page One!!!", font=LARGE_FONT)
label.pack(pady=10,padx=10)
button1 = tk.Button(self, text="Back to Home",
command=lambda: controller.show_frame(StartPage))
button1.pack()
button2 = tk.Button(self, text="Page Two",
command=lambda: controller.show_frame(PageTwo))
button2.pack()
PageTwo
類
class PageTwo(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
label = tk.Label(self, text="Page Two!!!", font=LARGE_FONT)
label.pack(pady=10,padx=10)
button1 = tk.Button(self, text="Back to Home",
command=lambda:self.start_reset())
button1.pack()
button2 = tk.Button(self, text="Page One",
command=lambda: controller.show_frame(PageOne))
button2.pack()
# self.after(5000,self.controller.show_frame(StartPage)) works only
# once and the time starts from the start of the GUI and after 5000ms it takes
# the gui to the start page no matter what
def start_reset(self):
self.after(5000,self.controller.show_frame(StartPage))
app = SeaofBTCapp()
app.mainloop()
相關:[如何使用after方法定期調用?](https://stackoverflow.com/q/44085554/7051394) –