python - 我想通过在画布小部件中创建一个框架来创建一个滚动条，但该条不显示

Question

根据Stack Overflow中的一些答案，我通过创建画布并将框架嵌入画布来创建滚动条，但是在这样做之后，我只能单击滚动条中的箭头来滚动窗口，但条不显示，无论我缩小窗口还是在框架中创建许多小部件。

class Basic_frame:
    def __init__(self):
        root.unbind('<Configure>')
        self.frame_canvas = Canvas(
            root, width=i_window_width, height=i_window_height, bg='red')
        self.window_frame = Frame(
            self.frame_canvas)
        self.xscrollbar = Scrollbar(
            self.frame_canvas, orient='horizontal', command=self.frame_canvas.xview)
        self.yscrollbar = Scrollbar(
            self.frame_canvas, orient='vertical', command=self.frame_canvas.yview)
        self.frame_canvas.configure(yscrollcommand=self.yscrollbar.set)
        self.frame_canvas.configure(xscrollcommand=self.xscrollbar.set)

        self.frame_canvas.xview_moveto(0)
        self.frame_canvas.yview_moveto(0)
        self.yscrollbar.pack(side='right', fill='y')
        self.xscrollbar.pack(side='bottom', fill='x')
        self.frame_canvas.create_window(
            (0, 0), window=self.window_frame, anchor='nw')
        # self.window_frame.bind('<Configure>', self.scroll_function)
        self.frame_canvas.pack(side=LEFT, fill=BOTH, expand=TRUE)
        self.frame_canvas.bind('<Configure>', self.resize)
        self.window_frame.bind('<Configure>', self.frame_size)
    def frame_size(self, event):
            size = (root.winfo_reqwidth(), root.winfo_reqheight())
            self.frame_canvas.config(scrollregion=(0, 0, 100, 100))
            # self.frame_canvas.configure(scrollregion=self.window_frame.bbox('all'))
            self.frame_canvas.config(width=event.width, height=event.height)

标签： pythontkinter