使用图像更新Tkinter标签 [英] Updating Tkinter Label with an Image
本文介绍了使用图像更新Tkinter标签的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我在使用Tkinter和PIL更新标签时遇到了一个小"问题.
Well I got a "small" problem with updating a label using Tkinter and PIL.
当我按下 cheese 按钮时,它应该显示foo2,但是它只显示白屏.有什么建议吗?
As soon as I press the cheese Button it should display foo2, but it just displays a white screen. Any suggestions?
这是我的代码:
from PIL import Image as Im
from Tkinter import *
class MyWindow():
def __init__(self):
self.root = Tk()
self.maskPng = Im.open("foo.png")
self.maskPng.convert("RGBA")
self.maskPng.save("bar.gif", "GIF")
self.mask = PhotoImage(file = "bar.gif")
self.show = Label(self.root, image = self.mask).pack(side = "left")
self.speedBTN = Button(self.root, text = "cheese", command = self.speed).pack(side = "right")
self.changed = False
def speed(self):
self.speedImg = Im.open('foo2')
self.speedImg = self.speedImg.convert("RGBA")
# overlaying foo and foo2 -- it works I tested it
self.maskPng.paste(self.speedImg, (0,0), self.speedImg)
self.render()
def render(self):
self.mask = PhotoImage(self.speedImg)
self.show.configure(image = self.mask)
self.show.image = self.mask
def draw(self):
self.root.mainloop()
main = MyWindow()
main.root.mainloop()
推荐答案
好吧,我认为原因是self.show
,当您按下按钮时是None
.这是因为此行:
Well, I think that the reason is self.show
which is None
when you press the button. This is because this line:
self.show = Label(self.root, image = self.mask).pack(side = "left")
应为:
self.show = Label(self.root, image = self.mask)
self.show.pack(side = "left")
之所以会这样,是因为pack
,grid
等返回None
.
This happens, because pack
, grid
etc. return None
.
这篇关于使用图像更新Tkinter标签的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文