如何阻止Tkinter Message小部件调整大小？

Question

我正在创建三个“消息小部件”，但它们似乎根据内部的内容调整宽度和高度，是否可以防止这样的事情？

from tkinter import *

root = Tk()
root.configure(background = 'Yellow')
root.geometry('500x400')

a = '{}'.format('The Elepthan is Big')
b = '{}'.format('The Bird')
c = '{}'.format('The Lion is big and ferocious, kills any animal')

msg = Message(root, text = a, width=300, justify='left')
msg.config(bg='lightgreen',relief=RIDGE, font=('times', 9), pady=-2, borderwidth=3)
msg.pack()


msg = Message(root, text = b, width=300, justify='left')
msg.config(bg='lightgreen',relief=RIDGE, font=('times', 9), pady=-2, borderwidth=3)
msg.pack()

msg = Message(root, text = c, width=300, justify='left')
msg.config(bg='lightgreen',relief=RIDGE, font=('times', 9), pady=-2, borderwidth=3)
msg.pack()




root.mainloop()

Answer 1

更新：

你有几个选项，但根据你的评论widgets resize according to their content, I want them all with same width我将使用pack()几何管理器给出最符合您需求的示例。

至少最简单的选择是pack(fill = BOTH)

做你想做的最快捷的方法是使用框架。 框架将调整为最大的文本，并且在所有消息窗口小部件上使用pack(fill = BOTH)会将较小的框架扩​​展为框架的大小，该框架的大小也是最大小部件的大小。

from tkinter import *

root = Tk()
root.configure(background = 'Yellow')
root.geometry('500x400')

a = '{}'.format('The Elepthan is Big')
b = '{}'.format('The Bird')
c = '{}'.format('The Lion is big and ferocious, kills any animal')

frame = Frame(root)
frame.pack()

msg = Message(frame, text = a, width=300, justify='left')
msg.config(bg='lightgreen',relief=RIDGE, font=('times', 9), pady=-2, borderwidth=3)
msg.pack(fill=BOTH)


msg = Message(frame, text = b, width=300, justify='left')
msg.config(bg='lightgreen',relief=RIDGE, font=('times', 9), pady=-2, borderwidth=3)
msg.pack(fill=BOTH)

msg = Message(frame, text = c, width=300, justify='left')
msg.config(bg='lightgreen',relief=RIDGE, font=('times', 9), pady=-2, borderwidth=3)
msg.pack(fill=BOTH)

root.mainloop()

Answer 2

您可以通过查找最长消息的宽度，然后使用Message小部件的padx选项将所有消息中心化在该长度值中来实现。 这是一个例子：

from tkinter import *
import tkinter.font as tkFont

root = Tk()
root.configure(background='Yellow')
root.geometry('500x400')

a = 'The Elepthan is Big'
b = 'The Bird'
c = 'The Lion is big and ferocious, kills any animal'
messages = a, b, c

msgfont = tkFont.Font(family='times', size=9)
maxwidth = max(msgfont.measure(text) for text in messages)  # get pixel width of longest one

for text in messages:
    msg = Message(root, text=text, width=maxwidth, justify='left')
    padx = (maxwidth-msgfont.measure(text)) // 2  # padding needed to center text
    msg.config(bg='lightgreen', relief=RIDGE, font=msgfont, padx=padx, pady=-2, borderwidth=3)
    msg.pack()

root.mainloop()

结果：