tkinter：用框架内容填充可滚动画布

Question

我搜索了很多，但没有找到正确填充此内容框架的可滚动画布的方法。总是有额外的空间。

在下面的SO代码中找到的代码适用于一个简单示例，我希望我的DummyFrame组件能够将画布左侧的所有额外空间都拿走。

import Tkinter as tk 

class DummyFrame(tk.Frame): 
    def __init__(self, root): 
     tk.Frame.__init__(self, root, borderwidth=10, background="#ff0000") 
     tk.Label(self, text="DummyLabel").grid(row=0, column=0, sticky="wnes") 
     self.columnconfigure(0, weight=1) 
     self.rowconfigure(0, weight=1) 

class Example(tk.Frame): 
    def __init__(self, root): 
     tk.Frame.__init__(self, root) 

     self.canvas = tk.Canvas(root, borderwidth=0, background="#ffffff") 
     self.frame = tk.Frame(self.canvas, borderwidth=10, background="#000000") 
     self.vsb = tk.Scrollbar(root, orient="vertical", command=self.canvas.yview) 
     self.canvas.configure(yscrollcommand=self.vsb.set) 

     self.vsb.grid(row=0, column=1, sticky="wnes") 
     self.canvas.grid(row=0, column=0, sticky="wnes") 
     self.canvas.create_window((0,0), window=self.frame, anchor="nw", 
            tags="self.frame") 

     self.frame.columnconfigure(0, weight=1) 
     self.frame.rowconfigure(0, weight=1) 
     self.frame.bind("<Configure>", self.OnFrameConfigure) 

     self.columnconfigure(0, weight=1) 
     self.rowconfigure(0, weight=1) 

     self.populate() 

    def populate(self): 
     for i_row in range(50): 
      #Component I want to take extra space when resizing window 
      DummyFrame(self.frame).grid(row = i_row+1, column = 0, sticky="we") 

    def OnFrameConfigure(self, event): 
     '''Reset the scroll region to encompass the inner frame''' 
     self.canvas.configure(scrollregion=self.canvas.bbox("all")) 

if __name__ == '__main__': 
    fenetre = tk.Tk() 
    fenetre.geometry('{}x{}'.format(800, 600)) 
    Example(fenetre) 
    fenetre.columnconfigure(0, weight=1) 
    fenetre.rowconfigure(0, weight=1) 
    fenetre.mainloop() 

Answer 1

这个例子非常奇怪的注定。因此，您在Frame中的画布中放置了一个Frame中的DummyFrame。很难看到这里发生了什么，以及哪个小部件尺寸控制了用户看到的最终尺寸。不过，如果你想使DummyFrame的宽度作为根窗口（即800像素）只是改变了画布窗口宽度：

self.canvas.create_window((0,0), window=self.frame, anchor="nw", 
          width=800, 
          tags="self.frame") 

Answer 2

Finaly我找到了装用帆布itemconfigure我的需求：

import Tkinter as tk 

class DummyFrame(tk.Frame): 
    def __init__(self, root): 
     tk.Frame.__init__(self, root, borderwidth=10, background="#ff0000") 
     tk.Label(self, text="DummyLabel").grid(row=0, column=0, sticky="wnes") 
     self.columnconfigure(0, weight=1) 
     self.rowconfigure(0, weight=1) 
     pass 

class Example(tk.Frame): 
    def __init__(self, root): 
     tk.Frame.__init__(self, root) 

     self.canvas = tk.Canvas(root, borderwidth=0, background="#0000ff") 
     self.vsb = tk.Scrollbar(root, orient="vertical", command=self.canvas.yview) 
     self.canvas.configure(yscrollcommand=self.vsb.set) 
     self.canvas.bind("<Configure>", self.OnCanvasConfigure) 
     self.vsb.grid(row=0, column=1, sticky="wnes") 
     self.canvas.grid(row=0, column=0, sticky="wnes") 

     self.frame = tk.Frame(self.canvas, borderwidth=10, background="#000000") 
     self.frame.columnconfigure(0, weight=1) 
     self.frame.rowconfigure(0, weight=1) 

     self.window = self.canvas.create_window((0,0), window=self.frame, anchor="nw", 
          tags="self.frame") 

     self.columnconfigure(0, weight=1) 
     self.rowconfigure(0, weight=1) 

     self.populate() 

    def populate(self): 
     for i_row in range(50): 
      #Component I want to take extra space when resizing window 
      DummyFrame(self.frame).grid(row = i_row+1, column = 0, sticky="we") 

    def OnCanvasConfigure(self, event): 
     self.canvas.itemconfigure(self.window, width=event.width) 
     self.canvas.configure(scrollregion=self.canvas.bbox("all")) 

if __name__ == '__main__': 
    fenetre = tk.Tk() 
    fenetre.geometry('{}x{}'.format(800, 600)) 
    Example(fenetre) 
    fenetre.columnconfigure(0, weight=1) 
    fenetre.rowconfigure(0, weight=1) 
    fenetre.mainloop()