我希望進(jìn)行一個(gè)綁定，允許我根據(jù)用戶按下的鍵放置某個(gè)值。這是我執(zhí)行此操作的示例代碼：from tkinter import *from tkinter import ttkv=Tk()combo = ttk.Combobox(values=['item1','item2','item3','item4'], state='readonly')combo.current(0)combo.pack()def function(Event): if(Event.char in '1234'): combo.set(f'item{Event.char}')combo.bind('<Key>', function)v.mainloop()他們會(huì)告訴我“如果這有效，你問(wèn)這個(gè)做什么？” 事實(shí)證明，如果部署了組合框，綁定就會(huì)停止工作。問(wèn)題如何解決？我知道這部分問(wèn)題不應(yīng)該問(wèn)，因?yàn)樗c所討論的問(wèn)題無(wú)關(guān)。但我想問(wèn)一下，如果這個(gè)問(wèn)題有問(wèn)題，或者拼寫(xiě)錯(cuò)誤，或者其他什么，請(qǐng)告知?！叭绾翁岢鲆粋€(gè)好問(wèn)題”的頁(yè)面對(duì)我沒(méi)有幫助，因?yàn)閺奈业慕嵌葋?lái)看，我按照他們所說(shuō)的去做一切。我盡力使此處所寫(xiě)的內(nèi)容盡可能詳細(xì)且易于理解。希望您的理解，謝謝。
1 回答
至尊寶的傳說(shuō)
TA貢獻(xiàn)1789條經(jīng)驗(yàn) 獲得超10個(gè)贊
from tkinter import *
from tkinter import ttk
v=Tk()
# I create two test combobox
for _ in range(2):
? ? combo = ttk.Combobox(values=['item1','item2','item3','item4'], state='readonly')
? ? combo.current(0)
? ? combo.pack()
# I create a test entry to test if the function correctly recognizes when it should be executed
entrada = Entry()
entrada.pack()
def function(Event):
? ? """
? ? If Event.widget is a str and ends with ".popdown.f.l" I consider it to be the Listbox,
? ? I get the path of the Combobox it belongs to and convert it to a widget.
? ? Afterwards, I set the value of Event.widget to that of the supposed combobox.
? ? """
? ? if(isinstance(Event.widget, str) and Event.widget.endswith(".popdown.f.l")):
? ? ? ? Event.widget = v._nametowidget(Event.widget[:-len(".popdown.f.l")])
? ? ? ??
? ? # If Event.widget is not a Combobox, it stops the execution of the function.
? ? if(not isinstance(Event.widget, ttk.Combobox)):
? ? ? ? return
? ? if(Event.char in '1234'):
? ? ? ? Event.widget.set(f'item{Event.char}')
v.bind_all('<Key>', function)
v.mainloop()
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