Question

以下代码创建一个内部有框架的画布。我正在使用画布启用添加垂直滚动条，必要时会显示该滚动条。我把各个部分着色了 - 根，蓝色;窗户，绿色;帆布，红色和框架，青色。由此可以看出窗口完全填满根（没有看到蓝色）。但是，画布仅在垂直方向上填充窗口（在展开窗口时绿色可见绿色，框架仅在水平方向填充画布（红色在青色下方可见）。我无法看到导致问题的原因。框架是绑定到画布和画布有sticky ='nsew'设置所以应该填充窗口。

import Tkinter as tk
import tkFileDialog

class AutoScrollbar(tk.Scrollbar):
    # a scrollbar that hides itself if it's not needed.  only
    # works if you use the grid geometry manager.
    def set(self, lo, hi):
        if float(lo) <= 0.0 and float(hi) >= 1.0:
            # grid_remove is currently missing from Tkinter!
            self.tk.call("grid", "remove", self)
        else:
            self.grid()
        tk.Scrollbar.set(self, lo, hi)
    def pack(self, **kw):
        raise TclError, "cannot use pack with this widget"
    def place(self, **kw):
        raise TclError, "cannot use place with this widget"

class Window(tk.Frame):
  def UserInput(self,status,name):
    row = self.row
    optionLabel = tk.Label(self.frame)
    optionLabel["text"] = name
    optionLabel.grid(row=row, column=0, sticky='w')
    var = tk.StringVar(root)
    var.set(status)
    w = tk.Entry(self.frame, textvariable= var)
    w.grid(row=row, column=1, sticky='ew')
    self.grid_columnconfigure(1,weight=1)
    self.row += 1
    return w

  def on_canvas_resize(self,event):
    padding = 8
    width = self.canvas.winfo_width() - padding
    self.canvas.itemconfigure("frame", width=width)

  def OnFrameConfigure(self, event):
    self.canvas.configure(scrollregion=self.canvas.bbox("all"))

  def __init__(self,parent):
    tk.Frame.__init__(self,parent)

    self.grid_rowconfigure(0, weight=1)
    self.grid_columnconfigure(0,weight=1)

    self.vscrollbar = AutoScrollbar(self,orient = tk.VERTICAL)
    self.vscrollbar.grid(row = 0,column = 3, sticky = 'ns')

    self.canvas = tk.Canvas(self, yscrollcommand = self.vscrollbar.set,bg='red')
    self.canvas.grid(row=0, column=0, sticky='nsew')
    self.canvas.grid_rowconfigure(0, weight = 1)
    self.canvas.grid_columnconfigure(0, weight = 1)

    self.frame = tk.Frame(self.canvas, bg='cyan')
    self.frame.bind("<Configure>", self.OnFrameConfigure)

    self.frame.grid_rowconfigure(0, weight=1)
    self.frame.grid_columnconfigure(0,weight=1)
    self.frame.grid_columnconfigure(1,weight=3)

    self.vscrollbar.config(command=self.canvas.yview) 

    self.canvas.create_window(0, 0, anchor = tk.NW, window= self.frame, tags =["frame"])
    self.canvas.bind("<Configure>", self.on_canvas_resize)

    self.row = 0

    for i in range(10):
      self.Number = self.UserInput("1", "number")

if __name__ == "__main__":
  root = tk.Tk()
  root.configure(background='blue')  
  root.grid_columnconfigure(0, weight=1)
  root.grid_rowconfigure(0,weight=1)  
  window = Window(root)
  window.configure(background='green')
  window.grid(row=0,column=0,sticky='nsew')
  root.mainloop()

Answer 1

您将画布放在第0列（零）中，并且您正确地为该列赋予了权重。但是，您还要给第1列（一行）赋予相同的权重（参见第29行），这会阻止画布填充窗口。删除第29行，即将第1列的权重设置为1.

您的框架水平填充画布，因为这是您要告诉它的。如果你想要它也是同一个高度，你也需要设置它的高度。

Tkinter画布没有归档根窗口

1 个答案: