Question

下面的代码最初是为了了解如何在框架中呈现URL列表并通过单击来访问它们而开发的。我也有几个按钮可以给他们打分。在我的项目中，我现在有很多网址，并且需要滚动条才能访问它们。我已经添加了一个，但是在可使用scollbar的框架部分未呈现url。实际上，我希望将整个底部框架链接到滚动条并用于呈现URL列表。我不明白我做错了什么。有人可以帮我吗？

编辑：按照下面的答案，下面的代码现在可以正常工作

import tkinter as tk
import webbrowser

class Pierre:
    """This class holds all the objects, data and functions for a single line"""
    def __init__(self, master, url):
        self.url = url
        self.counter = 0
        _, i = master.grid_size() # get the current row number

        lbl = tk.Label(master, text=url, fg="blue", cursor="hand2")
        lbl.grid(row=i, column=0)
        lbl.bind("<Button-1>", self.callback)

        self.DisplayButton = tk.Button(master, text = self.counter)
        self.DisplayButton.grid(row=i, column=1)
        self.DisplayButton.config(height = 1, width = 1 )

        self.Plus1Button = tk.Button(master, text = "+1", command=self.plus1, bg="green")
        self.Plus1Button.grid(row=i, column=2)
        self.Plus1Button.config(height = 1, width = 1 )

        self.Neg1Button = tk.Button(master, text = "-1", command=self.neg1, bg="green")
        self.Neg1Button.grid(row=i, column=3)
        self.Neg1Button.config(height = 1, width = 1 )

        master.update_idletasks()

    def plus1(self):
        self.counter += 1
        self.DisplayButton["text"]=str(self.counter)

    def neg1(self):
        self.counter -= 1
        self.DisplayButton["text"]=str(self.counter)

    def callback(self, event):
        webbrowser.open_new(self.url)

class TestClass(tk.Tk):
    def __init__(self, **kwargs):
        tk.Tk.__init__(self, **kwargs)
        self.title('Test')

        self.topframe = tk.Frame(self)
        self.topframe.pack( side = tk.TOP, pady=30)

        self.bottomframe = tk.Frame(self, width=250, height=190, bg="#EBEBEB")
        self.bottomframe.pack( side = tk.BOTTOM )

        self.canvas = tk.Canvas(self.bottomframe, width=250, height=190,
                                scrollregion=(0, 0, 1200, 800))
        self.canvas.grid()
        self.vscrollbar = tk.Scrollbar(self.bottomframe, orient=tk.VERTICAL,
                                       command=self.canvas.yview)
        self.vscrollbar.grid(row=0, column=5, sticky=tk.N+tk.S)

        self.canvas['yscrollcommand'] = self.vscrollbar.set
        self.frameCanvas=tk.Frame(self.canvas)
        self.canvas.create_window((0,0),window=self.frameCanvas,anchor='nw')

        #self.canvas.configure(scrollregion=self.canvas.bbox("all"))

        self.button = tk.Button(self.topframe, text='Click', command = self.output_value)
        self.button.pack(side="left", fill="both", expand=True)

     ####define the function that the submit button will do
    def output_value(self):
        urls = ["http://www.google.com", "http://www.facebook.com","http://www.google.com", "http://www.facebook.com", "http://www.google.com", "http://www.facebook.com"]
        for url in urls:
            Pierre(self.frameCanvas, url)

if __name__ == "__main__":
    root = TestClass()
    root.mainloop()

Answer 1

框架不具有滚动功能。通常的方法是使用画布，然后使用create_window()将小部件放置在画布上。

滚动条与Tkinter搞砸了

1 个答案: