使用Python Tkinter和网格布局管理器调整列表框的大小

Question

I am trying to write a simple app with two side-by-side scrollable listboxes. I want them each to take up half the window irrespective of the window size. While my window is resizable, the listboxes remain the same size and just get centered horizontally in their respective halves. What am I doing wrong?

from Tkinter import *
import os
import sys

class ScrollableList(Frame):

    def __init__(self, parent, vscroll=True, hscroll=False):
        Frame.__init__(self, parent)
        self.grid(sticky=NSEW)
        if vscroll:
            self.vScrollbar = Scrollbar(self, orient=VERTICAL)
            self.vScrollbar.grid(row=0, column=1, sticky=N+S)
        if hscroll:
            self.hScrollbar = Scrollbar(self, orient=HORIZONTAL)
            self.hScrollbar.grid(row=1, column=0, sticky=E+W)
        self.listbox = Listbox(self, selectmode=SINGLE)
        self.listbox.grid(row=0, column=0)
        if vscroll:
            self.listbox['yscrollcommand'] = self.vScrollbar.set
            self.vScrollbar['command'] = self.listbox.yview
        if hscroll:
            self.listbox['xscrollcommand'] = self.hScrollbar.set
            self.hScrollbar['command'] = self.listbox.xview
        self.grid_columnconfigure(0, weight=1)
        self.grid_columnconfigure(1, weight=0)
        self.grid_rowconfigure(0, weight=1)
        self.grid_rowconfigure(0, weight=0)

class Application(Frame):

    @classmethod
    def main(cls):
        NoDefaultRoot()
        root = Tk()
        app = cls(root)
        root.grid_columnconfigure(0, weight=1)
        root.grid_rowconfigure(0, weight=1)
        root.resizable(True, True)
        root.mainloop()

    def __init__(self, parent=None):
        Frame.__init__(self, parent)
        self.grid(sticky=NSEW)
        options = dict(sticky=NSEW, padx=3, pady=4)
        self.list1 = ScrollableList(self)
        self.list2 = ScrollableList(self)
        self.list1.grid(row=0, column=0, **options)
        self.list2.grid(row=0, column=1, **options)
        self.grid_rowconfigure(0, weight=1)
        self.grid_columnconfigure(0, weight=1)
        self.grid_columnconfigure(1, weight=1)

if __name__ == "__main__":
    Application.main()

Answer 1

您在将实际的列表框添加到其父级时会忘记设置sticky属性，这会导致列表框的边缘“粘连”到为其分配的区域的边缘。

self.listbox.grid(..., sticky="nsew")