Question

使用Tkinter，如何在单击按钮时在图像之间切换。将此代码作为参考，我只能加载一个图像，但我不知道如何使其按照我需要的方式运行。

from Tkinter import *
import ttk
from PIL import ImageTk, Image

def showImage(*args):
        lbl['image'] = image_tk

root = Tk()   
c = ttk.Frame(root, padding=(5, 5, 12, 0))
c.grid(column=0, row=0, sticky=(N,W,E,S))
root.grid_columnconfigure(0, weight=1)
root.grid_rowconfigure(0,weight=1)

fname = "A.jpg"
fname1 = "B.jpg"
image_tk = ImageTk.PhotoImage(Image.open(fname))

btn = ttk.Button(c, text="load image", command=showImage)
lbl1 = ttk.Label(c)
btn.grid(column=0, row=0, sticky=N, pady=5, padx=5)
lbl.grid(column=1, row=1, sticky=N, pady=5, padx=5)

root.mainloop()

如何配置我的ShowImage功能或能够在fname和fname1

之间切换图片所需的任何其他修改

Answer 1

要更改按钮单击时的图像，请使用configure()方法更改命令参数并创建新的ImageTk对象以保存第二个图像的参考。

from Tkinter import *
import ttk
from PIL import ImageTk, Image    

def showImage():
        lbl1.configure(image=image_tk)
        btn.configure(text = "load image!", command=showImage1)

def showImage1(): 
        lbl1.configure(image=image_tk1)
        btn.configure(text = "load image!", command=showImage)     

root = Tk()    
c = ttk.Frame(root, padding=(5, 5, 12, 0))
c.grid(column=0, row=0, sticky=(N,W,E,S))
root.grid_columnconfigure(0, weight=1)
root.grid_rowconfigure(0,weight=1)

fname = "a.jpg"
image_tk = ImageTk.PhotoImage(Image.open(fname))

fname1 = "b.jpg"
image_tk1 = ImageTk.PhotoImage(Image.open(fname1))  # new image object


btn = ttk.Button(c, text="load image", command=showImage)
lbl1 = ttk.Label(c)
btn.grid(column=0, row=0, sticky=N, pady=5, padx=5)
lbl1.grid(column=1, row=1, sticky=N, pady=5, padx=5)

root.mainloop()

在Tkinter按钮命令上显示新图像

1 个答案: