無法使文本框在文本框中填充組合框選擇。沒有錯誤返回

Question

因此，窗口小部件已創建，但文本框未填充來自組合框的選擇。如果有人能指出我的方向正確，我會很感激

import tkinter as tk 
from tkinter import ttk 
from tkinter import scrolledtext 
#from courses import NationalHunt 


win = tk.Tk() 
win.resizable(130,130) 
win.title("RaceCourse GUI") 

# create combobox 
course = tk.StringVar() 
courseChosen = ttk.Combobox(win, width=60,textvariable=course,state='readonly') 
courseChosen['values'] = ("Choose a course","Aintree","Ascot","Ayr", "Bangor", 
     "Carlisle","Cartmel","Catterick","Cheltenham","Chepstow","Doncaster", 
     "Exeter","Fakenham","Fontwell","Haydock","Hereford","Hexham","Huntingdon", 
     "Kelso","Kempton","Leicester","Ludlow","Market Rasen","Musselburgh", 
     "Newbury","Newcastle","Newton Abbot","Perth","Plumpton","Sandown", 
     "Sedgefield","Southwell","Stratford","Taunton","Towcester","Uttoxeter", 
     "Warwick","Wetherby","Wincanton","Windsor","Worcester") 
courseChosen.grid(column=5, row=1,rowspan = 3, columnspan = 3,padx = 300, pady = 40) 
courseChosen.current(0) 
courseChosen.bind("<<ComboboxSelected>>",course.get()) 

scrolW = 46 
scrolH = 10 
box = scrolledtext.ScrolledText(win, width=scrolW, height=scrolH,bd=5,wrap=tk.WORD) 
box.grid(column=5, row=8, columnspan=3,padx = 300,pady = 10) 
box.delete("1.0","5.20") 
box.insert(tk.INSERT,course.get()) 

# Start GUI 
win.mainloop() 

Answer 1

你的綁定不正確。它需要「

courseChosen.bind("<<ComboboxSelected>>",course.get) 

綁定需要參照調用。你立即調用get方法，然後將結果傳遞給具有約束力。