当按下按钮时绑定ttkCombobox - Python

Question

我正在使用Python 3.6.0，并且仅当我点击“确认结果”按钮时才想保存我的组合框的值。我已经做了一些寻找 - 但也许我有错误的术语 - 我找不到这样做的方式。

我假设问题是与我的线self.firstfaction_ent.bind（“Button-1”，self.firstfaction_onEnter）。我相当确信“Button-1”不正确 - 但我一直在尝试一切。

from tkinter import * 
from tkinter import ttk 

class Application(Frame): 

    def __init__(self, master): 

# Initialise the Frame 
     super(Application, self).__init__(master) 
     self.grid() 
     self.create_widgets() 

    def create_widgets(self): 

    #Define Combobox for Faction 
     self.firstfaction_ent=ttk.Combobox(self,textvariable=varSymbol, state='readonly') 
     self.firstfaction_ent.bind("<Button-1>", self.firstfaction_onEnter)  
     self.firstfaction_ent['values']=Faction 
     self.firstfaction_ent.grid(row=2, column=1) 

    #create a submit button 
     self.enter_bttn = Button(self,text = "Confirm Your Results", command = self.firstfaction_onEnter).grid(row=7, column=1) 

    def firstfaction_onEnter(self, event): 
     Faction_First = varSymbol.get() 
     print(Faction_First) 

#main 

root = Tk() 

#Window Title & size 
root.title("Sports Carnival Entry Window") 
root.geometry("600x500") 

varSymbol=StringVar(root, value='') 
varSecondFaction=StringVar(root, value='') 
Faction = ["Blue", "Green", "Yellow", "Red"] 

#create a frame in the window 
app = Application(root) 

root.mainloop() 

Answer 1

您需要confirm_button以捕捉combo box的选择;没有必要将组合框选择绑定到捕获;您也不需要将活动传递给firstfaction_onEnter;你可以直接使用combo_box来获取选择的值。

from tkinter import * 
from tkinter import ttk 

class Application(Frame): 

    def __init__(self, master): 

# Initialise the Frame 
     super(Application, self).__init__(master) 
     self.grid() 
     self.create_widgets() 

    def create_widgets(self): 

    #Define Combobox for Faction 
     self.firstfaction_ent = ttk.Combobox(self, textvariable=varSymbol, state='readonly') 
#  self.firstfaction_ent.bind("<Button-1>", self.firstfaction_onEnter)  
     self.firstfaction_ent['values'] = Faction 
     self.firstfaction_ent.grid(row=2, column=1) 

    #create a submit button 
     self.enter_bttn = Button(self, text="Confirm Your Results", command=self.firstfaction_onEnter).grid(row=7, column=1) 

    def firstfaction_onEnter(self): 
     Faction_First = self.firstfaction_ent.get() 
     print(Faction_First) 

#main 

root = Tk() 

#Window Title & size 
root.title("Sports Carnival Entry Window") 
root.geometry("600x500") 

varSymbol=StringVar(root, value='') 
varSecondFaction=StringVar(root, value='') 
Faction = ["Blue", "Green", "Yellow", "Red"] 

#create a frame in the window 
app = Application(root) 

root.mainloop()