강의노트 기본 위젯 - button

버튼

from tkinter import *

def fun_quit():
    win.destroy()
    
win = Tk()
but = Button(win, text='파이썬 종료', fg = 'red', command=fun_quit)
but.pack()
win.mainloop()

from tkinter import *
from tkinter import messagebox
from PIL import ImageTk, Image

def fun():
    messagebox.showinfo('이미지 테스트','ㅎㅎㅎ')
    
win = Tk()
photo = Image.open('D://전기전자//tiger.bmp')   #1
im = ImageTk.PhotoImage(photo)   #2
but = Button(win, image = im, command= fun)
but.pack()
win.mainloop()

버튼을 눌러서 버튼의 이미지를 바꾸는 방법

import tkinter as tk
count = 0
win = tk.Tk() 
win.geometry("400x300")  # Size of the window
bg = 'blue'         # change the day colour 
win.configure(background=bg) # default background of window
im1 = tk.PhotoImage(file = "D:\\전기전자\\clova_1.png")
im2 = tk.PhotoImage(file = "D:\\전기전자\\clova_2.png") 
def f_change():
    global count
    if(count % 2 == 0 ):
        b1.config(image=im1)
    else:
        b1.config(image=im2)
    count = count + 1
    
b1=tk.Button(win,image=im1,relief='flat',bg=bg,command=lambda:f_change())
b1.grid(row=1,column=1,padx=20,pady=10)
win.mainloop()  # Keep the window open

하나의 버튼에 여려개의 그림을 그리는 방법

import tkinter as tk
import random 
count = 0
img = []
win = tk.Tk() 
win.title('Card Select')
win.geometry("400x300")  
bg = 'blue'         
win.configure(background=bg) 
for i in range(1,14):
    s = f"D:\\전기전자\\clova_{i}.png"
    im = tk.PhotoImage(file = s)
    img.append(im)
    
def f_change():
    im = random.choice(img)
    b1.config(image=im)
    
b1=tk.Button(win,image=img[0],relief='flat',bg=bg,command=lambda:f_change())
b1.grid(row=1,column=1,padx=20,pady=10)
win.mainloop()  

버튼의 command 함수에 변수를 추가해서 넘기려면 lambda함수를 사용해야 한다.

import tkinter as tk
import random 

win = tk.Tk() 

def f_com(var):
   print(var)
   
b1=tk.Button(win,image=img[0],relief='flat',bg=bg,command=lambda:f_com(123))
b1.grid(row=1,column=1,padx=20,pady=10)
win.mainloop()