同一个窗口中的tkinter按钮包

Question

当我按下矩形（功能门1）时，我想要显示两个按钮，每个按钮都会给我的全局变量CHANGED提供不同的真值。 问题是我在对齐方面遇到了麻烦。按钮总是出现在我当前窗口的附加部分，我希望它们显示在我当前窗口的顶部

from tkinter import Tk, Canvas, Button
CHANGED = False

def options():
    global window
    button1 = Button(window, text='Click to change door')
    button1.bind("<Button-1>", change)
    button1.pack(side='top')

    button2 = Button(window, text='Click to keep door')
    button2.bind("<Button-1>", keep)
    button2.pack(side='top')

def change(*args):
    global CHANGED
    CHANGED = True
def keep(*args):
    global CHANGED
    CHANGED = False 
def door1(*args):
    options()

window = Tk()
canvas = Canvas(window, width=600, height=500)
square1 = canvas.create_rectangle(50, 500, 150, 200, fill="blue", tags="open_door_1")

canvas.tag_bind("open_door_1", "<Button-1>", door1)

canvas.pack()
window.mainloop()

如何更改？

Answer 1

您可以使用grid来实现这一目标，方法是定义row来放置小部件：

from tkinter import Tk, Canvas, Button
CHANGED = False

def options():
    button1 = Button(window, text='Click to change door')
    button1.bind("<Button-1>", change)
    button1.grid(row=0, sticky='w')

    button2 = Button(window, text='Click to keep door')
    button2.bind("<Button-1>", keep)
    button2.grid(row=1, sticky='w')

def change(*args):
    global CHANGED
    CHANGED = True
def keep(*args):
    global CHANGED
    CHANGED = False
def door1(*args):
    options()

window = Tk()
canvas = Canvas(window, width=600, height=500)
square1 = canvas.create_rectangle(50, 500, 150, 200, fill="blue", tags="open_door_1")

canvas.tag_bind("open_door_1", "<Button-1>", door1)

canvas.grid(row=2)
window.mainloop()

编辑：

在窗口小部件出现时防止窗口大小调整的解决方案，您可以使用如下所示的rowconfigure方法并指定几何图形：

另外，还有另外一点需要解决：您应该注意按钮的创建，每次在画布上单击都会创建另外两个小部件（可见或不可取决于布局）。 功能模式可能不是最好处理它，你需要将按钮定义为全局变量，只有在它们尚未显示时才创建它们：

from tkinter import Tk, Canvas, Button
CHANGED = False
button1 = None
button2 = None

def options():
    global button1, button2

    button1 = Button(window, text='Click to change door')
    button1.bind("<Button-1>", change)
    button1.grid(row=0, sticky='w')

    button2 = Button(window, text='Click to keep door')
    button2.bind("<Button-1>", keep)
    button2.grid(row=1, sticky='w')

def change(*args):
    global CHANGED
    CHANGED = True
def keep(*args):
    global CHANGED
    CHANGED = False
def door1(*args):
    if button1 is None and button2 is None:
        options()

window = Tk()
window.geometry("600x600")
window.rowconfigure(2,weight=1)
canvas = Canvas(window, width=600, height=500)
square1 = canvas.create_rectangle(50, 500, 150, 200, fill="blue", tags="open_door_1")

canvas.tag_bind("open_door_1", "<Button-1>", door1)    
canvas.grid(row=2,sticky='s')    
window.mainloop()