Tkinter 滚动条不在屏幕上并且不滚动

Question

所以我创建了一个 GUI，我需要一个垂直滚动条，但是滚动条似乎比它的父框架高，并且不滚动。我不知道为什么，但这是我目前的代码：

import tkinter as Tk
import matplotlib
matplotlib.use('TkAgg')
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure

root = Tk.Tk()

RightPane = Tk.Frame(root)
RightPane.grid()

class Graph:
    #Draws and return a placeholder for a graph
    #@param parent is the Tk.Frame parent obj
    #@param title is the (string) title for the graph
    def __init__(self, parent, title=''):
        #Initialise graph
        self.title = title
        self.fig = Figure(figsize=(4,4))
        self.plot = self.fig.add_subplot()
        self.plot.set_title(self.title, fontsize=10)
        self.plot.set_ylim(top=1)
        self.plot.set_xlim(right=255)
        self.plot.set_ylabel("Certainty", fontsize=8)
        self.plot.set_xlabel("Pixel Value", fontsize=8)

        #Draw
        self.canvas = FigureCanvasTkAgg(self.fig, master=parent)
        self.canvas.get_tk_widget().pack()
        self.canvas.draw()

        return

#Result Graphs -------------------------------------------
ResultFrame = Tk.Frame(RightPane)
ResultFrame.grid_columnconfigure(0, weight=1)
ResultFrame.grid(row=2, column=2, rowspan=14, padx=(10,0), pady=(10,0), sticky='nwe')

ResultScrollable = Tk.Canvas(ResultFrame)
ResultScrollable.grid(row=0, column=0, padx=(5,0), sticky='we')

graphCollection = []
for i in range(10):
    title = 'Certainty that image is digit: {}'.format(i)
    graphCollection.append(Graph(ResultScrollable, title=title))

ResultFrameVbar = Tk.Scrollbar(ResultFrame, orient='vertical', command=ResultScrollable.yview)
ResultFrameVbar.grid(row=0, column=1, sticky='nswe')

ResultScrollable.config(yscrollcommand=ResultFrameVbar.set, scrollregion=ResultScrollable.bbox('all'))

root.mainloop()

无法在 Internet 上找到任何内容，因此非常感谢您的帮助。提前谢谢你。

Answer 1

您正在 canvas (ResultScrollable) 中创建 canvases (self.canvas) 并在这些 canvases 上使用 pack()。所以 ResultScrollable.bbox('all') 将不包括那些 canvases。您应该创建一个内部 Frame 并将其与 create_window() 相关联，然后将那些 canvases 放入内部 Frame:

internalFrame = Tk.Frame(ResultScrollable)
ResultScrollable.create_window(0, 0, window=internalFrame, anchor='nw')

graphCollection = []
for i in range(10):
    title = 'Certainty that image is digit: {}'.format(i)
    graphCollection.append(Graph(internalFrame, title=title))

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