问题描述
我正在尝试将背景图像添加到 Python 中的画布.到目前为止，代码如下所示:
I'm trying to add a background image to a canvas in Python. So far the code looks like this:
from Tkinter import *
from PIL import ImageTk,Image
... other stuffs
root=Tk()
canvasWidth=600
canvasHeight=400
self.canvas=Canvas(root,width=canvasWidth,height=canvasHeight)
backgroundImage=root.PhotoImage("D:DocumentsBackground.png")
backgroundLabel=root.Label(parent,image=backgroundImage)
backgroundLabel.place(x=0,y=0,relWidth=1,relHeight=1)
self.canvas.pack()
root.mainloop()
它返回一个 AttributeError: PhotoImage
It's returning an AttributeError: PhotoImage
推荐答案
PhotoImage 不是 Tk() 实例 (root) 的属性.这是一个来自 Tkinter 的类.
PhotoImage is not an attribute of the Tk() instances (root). It is a class from Tkinter.
所以，你必须使用:
backgroundImage = PhotoImage("D:DocumentsBackground.gif")
注意 Label 是一个来自 Tkinter 的类...
Beware also Label is a class from Tkinter...
不幸的是，Tkinter.PhotoImage 仅适用于 gif 文件(和 PPM).如果您需要读取 png 文件，您可以使用 PIL 的 ImageTk 模块中的 PhotoImage(是的，同名)类.
Unfortunately, Tkinter.PhotoImage only works with gif files (and PPM).If you need to read png files you can use the PhotoImage (yes, same name) class in the ImageTk module from PIL.
这样，这会将您的 png 图像放入画布中:
So that, this will put your png image in the canvas:
from Tkinter import *
from PIL import ImageTk
canvas = Canvas(width = 200, height = 200, bg = 'blue')
canvas.pack(expand = YES, fill = BOTH)
image = ImageTk.PhotoImage(file = "C:/Python27/programas/zimages/gato.png")
canvas.create_image(10, 10, image = image, anchor = NW)
mainloop()
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