如何在Tkinter中找出PhotoImage的大小？

Question

如何访问PhotoImage()类对象的宽度和高度信息？我试着PhotoImage(...).winfo_width()和PhotoImage(...)["Width"].他们俩都没用.

Answer 1

PhotoImage对象有一个width和height方法:

import Tkinter as tk

image_data = '''
    R0lGODlhEAAQAMQZAMPDw+zs7L+/v8HBwcDAwLW1teLi4t7e3uDg4MLCwuHh4e7u7t/f38TExLa2
    tre3t7i4uL6+vu/v77q6uu3t7b29vby8vLm5ubu7u+3t7QAAAAAAAAAAAAAAAAAAAAAAACH5BAEA
    ABkALAAAAAAQABAAAAWNYCaOZFlWV6pWZlZhTQwAyYSdcGRZGGYNE8vo1RgYCD2BIkK43DKXRsQg
    oUQiFAkCI3iILgCLIEvJBiyQiOML6GElVcsFUllD25N3FQN51L81b2ULARN+dhcDFggSAT0BEgcQ
    FgUicgQVDHwQEwc+DxMjcgITfQ8Pk6AlfBEVrjuqJhMOtA4FBRctuiUhADs=
'''

root = tk.Tk()
image = tk.PhotoImage(data=image_data)
dimensions = "image size: %dx%d" % (image.width(), image.height())
label = tk.Label(root, compound="top", image=image, text=dimensions)
label.pack()
root.mainloop()