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下面的代码在显示OtherPage帧时运行的OtherPage类中具有onShowFrame函数。我的问题是,在帧实际显示给用户之前,onShowFrame函数中的所有内容都会运行。我已经用time.sleep(5)
证明了这一点。在显示OtherPage框架之前,程序会休眠5秒钟,并保留在BlankPage上。我想先显示OtherPage框架,然后再运行onShowFrame函数中的任何东西。tkinter - 显示帧后运行函数
我该怎么做?
import tkinter as tk
import time
class Program(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
tk.Tk.iconbitmap(self, default = "")
tk.Tk.wm_title(self, "")
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 (BlankPage, OtherPage):
frame = F(container, self)
self.frames[F] = frame
frame.grid(row = 0, column = 0, sticky = "nsew")
self.showFrame(BlankPage)
def showFrame(self,cont):
frame = self.frames[cont]
frame.tkraise()
frame.event_generate("<<ShowFrame>>")
###########################################################################################################
class OtherPage(tk.Frame):
def __init__(self, parent, controller):
self.controller = controller
tk.Frame.__init__(self, parent)
innerFrame = tk.Frame(self)
innerFrame.place(relx=.5, rely=.5, anchor="c", relwidth=1.0, relheight=1.0)
innerFrame.grid_rowconfigure(0, weight=1)
innerFrame.grid_columnconfigure(0, weight=1)
self.frameOne = tk.Frame(innerFrame)
self.frameOne.grid()
label = tk.Label(self.frameOne, text = "Other Page")
label.pack()
self.bind("<<ShowFrame>>", self.onShowFrame)
def onShowFrame(self, event):
time.sleep(5)
###########################################################################################################
class BlankPage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
innerFrame = tk.Frame(self)
innerFrame.place(relx=.5, rely=.5, anchor="c", relwidth=1.0, relheight=1.0)
innerFrame.grid_rowconfigure(0, weight=1)
innerFrame.grid_columnconfigure(0, weight=1)
self.frameOne = tk.Frame(innerFrame)
self.frameOne.grid()
button = tk.Button(self.frameOne, text = "Press", command = lambda: controller.showFrame(OtherPage))
button.pack()
app = Program()
app.state('zoomed')
app.mainloop()
time.sleep可能是一个坏榜样,但同样的事情发生任何事情你把功能。我只注意到这个问题,因为我在那里的代码需要一段时间才能执行,并导致帧间变化之间的延迟。尽管如此,你的解决方案仍然可行 – simpleguy