Question

我已經搜索過，並嘗試在我的應用程序中使用Tkinter中的.after命令，但我沒有做任何解決此問題的方法。無論我嘗試做什麼，我試圖拖延的兩個盒子同時出現。

submenu.add_command(label="View High Score", command=lambda: check_hs_file()) 

def check_hs_file(): 
    hs_file = 'highscore.txt' 
    PATH = ('highscore.txt') 
    if os.path.isfile(PATH): 
     get_hs_as_int() 
     #go to main function 
    else: 
     with open(hs_file, 'w') as hs_file: 
      hs_file.write('0') 
     if os.path.isfile(PATH): 
      toplevel1 = Toplevel() 
      toplevel1.title("High Score!") 
      toplevel1.focus_set() 
      hs_textbox = Text(toplevel1, height=2, width=50) 
      hs_textbox.pack() 
      hs_textbox.insert(END, "You don't have a high score yet.. Creating file!\n") 
      get_hs_as_int() 
     else: 
      toplevel = Toplevel() 
      toplevel.title("High Score!") 
      toplevel.focus_set() 
      hs_textbox = Text(toplevel, height=2, width=50) 
      hs_textbox.pack() 
      hs_textbox.after(3000) 
      hs_textbox.insert(END, "Something went wrong, we could not create a file to keep your high score!") 

def get_hs_as_int(): 
    hs_file = 'highscore.txt' 
    with open(hs_file, 'r') as hs_file: 
     high_score = hs_file.read() 
     high_score = int(high_score) 
    toplevel = Toplevel() 
    toplevel.after(4000) 
    toplevel.title("High Score!") 
    toplevel.focus_set() 
    hs_textbox = Text(toplevel, height=2, width=50) 
    hs_textbox.pack() 
    hs_textbox.insert(END, "Your high score is: {}".format(high_score)) 

再次，打印高分的盒子，以及查看是否有高分的一個盒子同時出現。無論我在何處添加.after在我的代碼之後。任何幫助真的會很感激！

Answer 1

Tk.Widget.after的通常語法將回調函數作爲參數。

所以，用一個小片段作爲一個例子，你可以寫：

def method(...): 
    ... # calculate the meaning of life 

    def callback(): 
     print("I'm called later!") 

    self.after(10, callback) # execute callback() after 10s 

---

更常見的是，你要做的就是定義在類或模塊的另一個函數或方法，然後通過在指定時間後關閉。

因此，舉例來說，如果你想在短期內出現在窗口之後顯示一個彈出，你可以這樣做：

class Controller(): 
    def __init__(self, master): 
     # perform some initial setup 

     master.after(5, self.finalise) # run self.finalise() after 5s 

     # do some more setup 

    def finalise(self): 
     tk.messagebox.showinfo('Called later', 'Yippeeeeeee!')