在python中添加背景图像

Question

我正在尝试在Python中向画布添加背景图像.到目前为止代码看起来像这样:

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:\Documents\Background.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

Answer 1

PhotoImage不是Tk()instances(root)的属性.这是一个班级Tkinter.

所以,你必须使用:

backgroundImage = PhotoImage("D:\Documents\Background.gif")

也当心Label是从类Tkinter...

编辑:

不幸的是,Tkinter.PhotoImage只适用于gif文件(和PPM).如果你需要读取PNG文件,你可以使用PhotoImage(是的,相同的名字)类中ImageTk的模块PIL.

这样,这会将你的png图像放在画布上:

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()