Tkinter GUI Python中的调整大小按钮

Question

我用 Tkinter 创建了一个简单的 GUI 应用程序。

我对这段代码有两个问题：

import tkinter as tk
from tkinter import ttk, Grid, Frame, N, S, W, E, StringVar, Label, Entry, RAISED, Button, Checkbutton, Scrollbar

class mainApp(Frame):
    def __init__(self, parent):
        Frame.__init__(self, parent)
        self.parent = parent
        self.scan_button = Button(self.parent, text="Scan", command=self.scan_wifi)
        self.forget_button = Button(self.parent, text="Forget", command=self.forget_wifi)
        self.reboot_button = Button(self.parent, text="Reboot", command=self.reboot)
        frame=Frame(self.parent)
        Grid.rowconfigure(self.parent, 0, weight=1)
        Grid.columnconfigure(self.parent, 0, weight=1)
        frame.grid(row=0, column=0, sticky=N+S+E+W)
        grid=Frame(self.parent)
        grid.grid(sticky=N+S+E+W, column=0, row=7, columnspan=2)
        Grid.rowconfigure(self.parent, 7, weight=1)
        Grid.columnconfigure(self.parent, 0, weight=1)

        headings=('Name', 'Address', 'Quality', 'Channel', 'Signal Level', 'Encryption')
        row=[]
        rows=[]

        self.table = ttk.Treeview(show="headings", selectmode="browse")
        self.table["columns"]=headings
        self.table["displaycolumns"]=headings

        for head in headings:
            self.table.heading(head, text=head, anchor=tk.CENTER)
            self.table.column(head, width=30, anchor=tk.CENTER)

        self.scrolltable = tk.Scrollbar(command=self.table.yview)
        self.table.configure(yscrollcommand=self.scrolltable.set)
        self.scrolltable.grid(row=1, column=100, sticky=N+S)

        for row in rows:
            self.table.insert('', tk.END, values=tuple(row))

        self.table.bind('<ButtonRelease-1>', self.OnRelease)
        self.table.grid(row=0, rowspan=14, columnspan = 21, sticky=N+S+E+W)
        self.scan_button.grid(row=15, column = 1, columnspan = 1,   sticky=N+S+E+W)
        self.forget_button.grid(row=15, column = 0, columnspan = 1 , sticky=N+S+E+W)
        self.reboot_button.grid(row=15, column = 3, columnspan = 1 , sticky=N+S+E+W)

    def OnRelease(self, event):
        pass

    def scan_wifi(self):
        pass

    def forget_wifi(self):
        pass

    def reboot(self):
        pass

root=tk.Tk()

app = mainApp(root)
root.mainloop()

1) 如何移动窗口顶部的按钮？

2) 为什么，如果我调整窗口大小，“忘记”按钮会变得比其他按钮大？如何使所有按钮的大小相同？

Answer 1

因为您只调用了columnconfigure(0, weight=1)，因此在调整窗口大小时只会调整Forget 按钮的大小。

要将按钮移动到窗口顶部，您需要将按钮重新排列为row=0，将Treeview 重新排列为row=1。以下是根据您的修改代码：

import tkinter as tk
from tkinter import ttk

class mainApp(tk.Frame):
    def __init__(self, parent):
        tk.Frame.__init__(self, parent)
        self.parent = parent
        # buttons
        self.forget_button = tk.Button(self.parent, text='Forget', command=self.forget_wifi)
        self.scan_button = tk.Button(self.parent, text='Scan', command=self.scan_wifi)
        self.reboot_button = tk.Button(self.parent, text='Reboot', command=self.reboot)

        self.forget_button.grid(row=0, column=0, sticky='nsew')
        self.scan_button.grid(row=0, column=1, sticky='nsew')
        self.reboot_button.grid(row=0, column=2, sticky='nsew')

        # make the 3 buttons same width
        for i in range(3):
          self.parent.columnconfigure(i, weight=1)
        # make the treeview and the scrollbar to fill the remaining space
        self.parent.rowconfigure(1, weight=1)

        # treeview and scrollbar
        frame = tk.Frame(self.parent)
        frame.grid(row=1, column=0, columnspan=3, sticky='nsew')

        headings=('Name', 'Address', 'Quality', 'Channel', 'Signal Level', 'Encryption')
        self.table = ttk.Treeview(frame, show='headings', selectmode='browse')
        self.table['columns'] = headings
        self.table['displaycolumns'] = headings

        for head in headings:
            self.table.heading(head, text=head, anchor=tk.CENTER)
            self.table.column(head, width=30, anchor=tk.CENTER)

        self.scrolltable = tk.Scrollbar(frame, command=self.table.yview)
        self.table.configure(yscrollcommand=self.scrolltable.set)

        self.table.pack(side=tk.LEFT, fill=tk.BOTH, expand=1)
        self.scrolltable.pack(side=tk.RIGHT, fill=tk.Y)

        self.table.bind('<ButtonRelease-1>', self.OnRelease)

    def OnRelease(self, event):
        pass

    def scan_wifi(self):
        pass

    def forget_wifi(self):
        pass

    def reboot(self):
        pass

root=tk.Tk()
app = mainApp(root)
root.mainloop()