为什么我的 Tkinter 滚动条会填满窗口的整个长度？
我有工作水平滚动条，但由于某种原因它不会调整“可见”栏的大小。它确实可以完美滚动，但在添加样式 clam 之前我什至没有注意到有一个栏。
这是我的代码：
from tkinter import *
from tkinter import ttk
root = Tk()
style = ttk.Style()
style.theme_use('clam')
main_frame = Frame(root)
main_frame.pack(fill=BOTH, expand=1)
my_canvas = Canvas(main_frame)
my_canvas.pack(side=TOP, fill=BOTH, expand=1)
my_scrollbar = ttk.Scrollbar(main_frame, orient=HORIZONTAL, command=my_canvas.xview)
my_scrollbar.pack(side=BOTTOM, fill=X)
my_canvas.configure(yscrollcommand=my_scrollbar.set)
my_canvas.bind('<Configure>', lambda e: my_canvas.configure(scrollregion=my_canvas.bbox("all")))
seccond_frame = Frame(my_canvas)
my_canvas.create_window((0,0), window=seccond_frame, anchor="nw")
for i in range(100):
Label(seccond_frame, text=f"a{i}").grid(row=0, column=i)
root.update()
root.mainloop()
I have working horizontal scrollbar, but for some reason it does not rezise the "visible" bar. It does scroll perfectly, but I even didin't notice there was a bar before I added style clam.
Here is my code:
from tkinter import *
from tkinter import ttk
root = Tk()
style = ttk.Style()
style.theme_use('clam')
main_frame = Frame(root)
main_frame.pack(fill=BOTH, expand=1)
my_canvas = Canvas(main_frame)
my_canvas.pack(side=TOP, fill=BOTH, expand=1)
my_scrollbar = ttk.Scrollbar(main_frame, orient=HORIZONTAL, command=my_canvas.xview)
my_scrollbar.pack(side=BOTTOM, fill=X)
my_canvas.configure(yscrollcommand=my_scrollbar.set)
my_canvas.bind('<Configure>', lambda e: my_canvas.configure(scrollregion=my_canvas.bbox("all")))
seccond_frame = Frame(my_canvas)
my_canvas.create_window((0,0), window=seccond_frame, anchor="nw")
for i in range(100):
Label(seccond_frame, text=f"a{i}").grid(row=0, column=i)
root.update()
root.mainloop()
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评论（1）
您的代码中有两个问题：
my_canvas.configure(yscrollcommand=my_scrollbar.set)应该是my_canvas.configure(xscrollcommand=my_scrollbar.set)向
seccond_frame，它是seccond_frame调整大小，而不是my_canvas。因此，您需要在seccond_frame上绑定my_canvasThere are two issues in your code:
my_canvas.configure(yscrollcommand=my_scrollbar.set)should bemy_canvas.configure(xscrollcommand=my_scrollbar.set)when adding items to
seccond_frame, it isseccond_frameget resized, notmy_canvas. So you need to bind<Configure>onseccond_frameinstead ofmy_canvas