出现的问题
from tkinter import *
from PIL import Image, ImageTk
root = Tk()
root.title('按钮点击加载图片')
def show():
img = Image.open('1.png') # 打开图片
photo = ImageTk.PhotoImage(img) # 用PIL模块的PhotoImage打开
imglabel = Label(root, image=photo)
imglabel.grid(row=0, column=0, columnspan=3)
btn = Button(root, text="show", command=show)
btn.grid(row=1, column=1)
mainloop()
运行结果
重点:将参数设置成全局变量
photo=None
img=None
上代码
from tkinter import *
from PIL import Image, ImageTk
root = Tk()
root.title('按钮点击加载图片')
photo=None
img=None
def show():
global photo
global img
img = Image.open('1.png') # 打开图片
photo = ImageTk.PhotoImage(img) # 用PIL模块的PhotoImage打开
imglabel = Label(root, image=photo)
imglabel.grid(row=0, column=0, columnspan=3)
btn = Button(root, text="show", command=show)
btn.grid(row=1, column=1)
mainloop()