如果用户输入“ b”,我试图将框架的颜色更改为黑色,如果用户输入“ g”,则为绿色。这是我到目前为止所拥有的
谢谢。
from tkinter import *
class Main:
def __init__(self):
root = Tk()
root.geometry("250x300-1200-400")
frame = Frame(root)
# input field stored
self.input_a = StringVar()
# input field
input_color_changer = Entry(root, textvariable=self.input_a)
input_color_changer.grid(row=0, column=0)
button = Button(root, text="Run", command=self.ColorChanger)
button.grid(row=1, column=2)
root.mainloop()
def ColorChanger(self):
input_b = self.input_a.get()
if input_b == "b":
print("BLACK") # CHANGE COLOR OF FRAME TO BLACK
if input_b == "g":
print("GREEN") # CHANGE COLOR OF FRAME TO GREEN etc...
Main()
您不会将Frame
放到窗口中(您不使用pack()
/grid()
/ place()
),但是即使将其放到窗口中,它也是空的,因此它没有高度和宽度因此您看不到任何区别。
最好使用root
,但是您需要self.root
才能在其他功能中访问它,然后您可以执行
self.root['bg'] = 'green'
# from tkinter import * # PEP8: not preferred
import tkinter as tk
class Main:
def __init__(self):
self.root = tk.Tk()
self.root.geometry("250x300-1200-400")
#self.frame = tk.Frame(self.root)
#self.frame.pack()
# input field stored
self.input_a = tk.StringVar()
# input field
input_color_changer = tk.Entry(self.root, textvariable=self.input_a)
input_color_changer.grid(row=0, column=0)
button = tk.Button(self.root, text="Run", command=self.color_changer)
button.grid(row=1, column=2)
self.root.mainloop()
def color_changer(self): # PEP8: lower_case_names for methods/functions/variables
input_b = self.input_a.get()
if input_b == "b":
print("BLACK") # CHANGE COLOR OF FRAME TO BLACK
self.root['bg'] = 'black'
if input_b == "g":
print("GREEN") # CHANGE COLOR OF FRAME TO GREEN etc...
self.root['bg'] = 'green'
Main()