Tkinter 和 Python 相对较新。请耐心等待。

我正在尝试显示以下 GUI，并希望在 Frame2 中有一个滚动条，以便一次只显示 5x5 个按钮。看起来 Tkinter 框架不支持滚动条，因此在父框架“FMas”中添加了 Canvas (框架嵌入其中)和滚动条。但是由于某种原因，滚动条会移动到屏幕的右端并且不会进行任何滚动。

Canvas 不应该在 Frame2 的边缘结束并且滚动条就在它旁边吗？此外，我尝试使用 rowspan 来增加滚动条的高度以匹配 5x5 按钮的高度。那也行不通。

代码(使用Python3.2):

from tkinter import *
import tkinter.ttk as ttk

mGui = Tk()

mGui.geometry("630x600")
mGui.configure(background="Gray")

mGui.columnconfigure(0, weight=1)
mGui.rowconfigure(0, weight=1)

FMas = Frame(mGui, bg="Gray")
FMas.grid(sticky=(N,E,S,W))

FMas.columnconfigure(0, weight=1)

L1 = Label(FMas, text="Frame 1 Contents")
L1.grid(row=0, column=0, pady=5, sticky=(N,W))

F1 = Frame(FMas, bg="Green", bd=2, relief=GROOVE)
F1.grid(row=1, column=0, sticky=(N,W))

ChkBox1=IntVar()
CB1 = Checkbutton(F1, text="StartCheckBox", variable=ChkBox1)
CB1.grid(row=0,column=0,padx=2)

L2 = Label(FMas, text="Frame 2 Contents")
L2.grid(row=2, column=0, pady=5, sticky=(N,W))

Can1 = Canvas(FMas, bg="Yellow")
Can1.grid(row=3, column=0, sticky=(N,W))

F2 = Frame(Can1, bg="Blue", bd=2, relief=GROOVE)
F2.grid(row=0, column=0, sticky=(N,W))

rows = 10
for i in range(1,rows):
    for j in range(1,6):
        button = Button(F2, padx=7, pady=7, text="[%d,%d]" % (i,j))
        button.grid(row=i, column=j, sticky='news')

vsbar = Scrollbar(FMas, orient="vertical", command=Can1.yview)
vsbar.grid(row=3, column=1)

Can1.configure(yscrollcommand=vsbar.set, scrollregion=Can1.bbox("all"))

L3 = Label(FMas, text="Frame 3 Contents")
L3.grid(row=4, column=0, pady=5, sticky=(N,W))

F3 = Frame(FMas, bg="Red", bd=2, relief=GROOVE)
F3.grid(row=5, column=0, sticky=(N,W))

ChkBox2=IntVar()
CB2 = Checkbutton(F3, text="EndCheckBox", variable=ChkBox2)
CB2.grid(row=0,column=0,padx=2)

mGui.mainloop()
sys.exit()

最佳答案

滚动条的高度与按钮框架的高度不匹配，因为你没有告诉它坚持南北 .grid(..., sticky='ns')

然后，您想要实现的滚动行为在此处描述:Adding a Scrollbar to a group of widgets

另见@ martineau对具有 2D 滚动(水平和垂直)的更通用的面向对象解决方案的回答

import tkinter as tk

root = tk.Tk()
root.grid_rowconfigure(0, weight=1)
root.columnconfigure(0, weight=1)

frame_main = tk.Frame(root, bg="gray")
frame_main.grid(sticky='news')

label1 = tk.Label(frame_main, text="Label 1", fg="green")
label1.grid(row=0, column=0, pady=(5, 0), sticky='nw')

label2 = tk.Label(frame_main, text="Label 2", fg="blue")
label2.grid(row=1, column=0, pady=(5, 0), sticky='nw')

label3 = tk.Label(frame_main, text="Label 3", fg="red")
label3.grid(row=3, column=0, pady=5, sticky='nw')

# Create a frame for the canvas with non-zero row&column weights
frame_canvas = tk.Frame(frame_main)
frame_canvas.grid(row=2, column=0, pady=(5, 0), sticky='nw')
frame_canvas.grid_rowconfigure(0, weight=1)
frame_canvas.grid_columnconfigure(0, weight=1)
# Set grid_propagate to False to allow 5-by-5 buttons resizing later
frame_canvas.grid_propagate(False)

# Add a canvas in that frame
canvas = tk.Canvas(frame_canvas, bg="yellow")
canvas.grid(row=0, column=0, sticky="news")

# Link a scrollbar to the canvas
vsb = tk.Scrollbar(frame_canvas, orient="vertical", command=canvas.yview)
vsb.grid(row=0, column=1, sticky='ns')
canvas.configure(yscrollcommand=vsb.set)

# Create a frame to contain the buttons
frame_buttons = tk.Frame(canvas, bg="blue")
canvas.create_window((0, 0), window=frame_buttons, anchor='nw')

# Add 9-by-5 buttons to the frame
rows = 9
columns = 5
buttons = [[tk.Button() for j in range(columns)] for i in range(rows)]
for i in range(0, rows):
    for j in range(0, columns):
        buttons[i][j] = tk.Button(frame_buttons, text=("%d,%d" % (i+1, j+1)))
        buttons[i][j].grid(row=i, column=j, sticky='news')

# Update buttons frames idle tasks to let tkinter calculate buttons sizes
frame_buttons.update_idletasks()

# Resize the canvas frame to show exactly 5-by-5 buttons and the scrollbar
first5columns_width = sum([buttons[0][j].winfo_width() for j in range(0, 5)])
first5rows_height = sum([buttons[i][0].winfo_height() for i in range(0, 5)])
frame_canvas.config(width=first5columns_width + vsb.winfo_width(),
                    height=first5rows_height)

# Set the canvas scrolling region
canvas.config(scrollregion=canvas.bbox("all"))

# Launch the GUI
root.mainloop()

关于python - 带网格的 tkinter Canvas 滚动条？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43731784/