如何让 tkinter 框架填充整个画布并与之一起扩展?

Question

我想制作一个可滚动的框架，填充应用程序窗口中的整个单元格。调整窗口大小时，框架中的小部件应保持居中。由于框架不可滚动，我使用了画布并在其窗口中放置了一个框架。滚动区域与框架相关联。但是，我无法使框架扩展并填充整个画布区域。

我尝试在画布中为具有整个画布宽度的框架创建一个窗口，并将窗口宽度的变化与画布配置事件相关联。但是我得到了有线结果。框架仅占据窗口的右侧部分。当我展开窗口时，它会向左移动。我把画布涂成黄色，把框架涂成绿色，让东西可见。 感谢您的任何帮助！

import tkinter as tk

class FrameWithScrollBar(tk.Frame):
def __init__(self, parent, *args, **kwargs):
super().__init__(parent, *args, **kwargs)
self.canvas = tk.Canvas(self, bg='yellow')
self.frame = tk.Frame(self.canvas, bg='green')
self.scrollbar = tk.Scrollbar(self, orient='vertical',
command=self.canvas.yview)
self.canvas.configure(yscrollcommand=self.scrollbar.set)
self.canvas.pack(side=tk.LEFT, fill=tk.BOTH, expand=True)
self.scrollbar.pack(side=tk.RIGHT, fill=tk.BOTH)
self.frame.pack(fill=tk.BOTH, expand=True)
self._frame_id = self.canvas.create_window(
self.canvas.winfo_reqwidth(), 0,
anchor='n',
window=self.frame)
self.frame.bind('<Configure>', self.onFrameConfigure)
self.canvas.bind('<Configure>', self.onCanvasConfigure)
def onFrameConfigure(self, event):       
self.canvas.configure(scrollregion=self.frame.bbox('all'))
def onCanvasConfigure(self, event):
width = event.width
self.canvas.itemconfigure(self._frame_id, width=width)

if __name__ == '__main__':
root = tk.Tk()
fws = FrameWithScrollBar(root)
buttons = list()
for i in range(5):
for j in range(25):
button = tk.Button(fws.frame, text='Button ' + str(i) + ','+str(j))
button.grid(row=j, column=i, sticky='wesn')
tk.Grid.columnconfigure(fws.frame, j, weight=1)
fws.pack(expand=True, fill=tk.BOTH)
root.mainloop()

Answer 1

谢谢，斯托夫夫！ 工作代码，以防有人需要它

import tkinter as tk

class FrameWithScrollBar(tk.Frame):
def __init__(self, parent, *args, **kwargs):
super().__init__(parent, *args, **kwargs)
self.canvas = tk.Canvas(self, bg='yellow')
self.frame = tk.Frame(self.canvas, bg='green')
self.scrollbar = tk.Scrollbar(self, orient='vertical',
command=self.canvas.yview)
self.canvas.configure(yscrollcommand=self.scrollbar.set)
self.canvas.pack(side=tk.LEFT, fill=tk.BOTH, expand=True)
self.scrollbar.pack(side=tk.RIGHT, fill=tk.BOTH)
self.frame.pack(fill=tk.BOTH, expand=True)
self._frame_id = self.canvas.create_window(
self.canvas.winfo_width(), 0,
anchor='nw',
window=self.frame)
self.frame.bind('<Configure>', self.onFrameConfigure)
self.canvas.bind('<Configure>', self.onCanvasConfigure)
def onFrameConfigure(self, event):       
self.canvas.configure(scrollregion=self.frame.bbox('all'))
def onCanvasConfigure(self, event):
width = event.width
self.canvas.itemconfigure(self._frame_id, width=self.canvas.winfo_width())

if __name__ == '__main__':
root = tk.Tk()
fws = FrameWithScrollBar(root)
buttons = list()
for i in range(5):
for j in range(25):
button = tk.Button(fws.frame, text='Button ' + str(i) + ','+str(j))
button.grid(row=j, column=i, sticky='wesn')
tk.Grid.columnconfigure(fws.frame, i, weight=1)
fws.pack(expand=True, fill=tk.BOTH)
root.mainloop()