Question

我的第一个tkinter（Python 3）笔记本应用程序出现问题。

显示数据的画布只需要宽775像素，高480像素。这一切都非常好，直到选项卡的数量使窗口比这更宽。所有数据都放在一边，另一边是空虚的海洋。我试图让笔记本小部件可滚动，但我无法让它工作。

任何建议都会得到很好的接受。

#!/usr/bin/python

# Try to work with older version of Python
from __future__ import print_function

import sys

if sys.version_info.major < 3:
    import Tkinter as tk
    import Tkinter.ttk as ttk
else:
    import tkinter as tk
    import tkinter.ttk as ttk

#============================================================================
#   MAIN CLASS
class Main(tk.Frame):
    """ Main processing
    """
    def __init__(self, root, *args, **kwargs):
        tk.Frame.__init__(self, root, *args, **kwargs)

        self.root = root
        self.root_f = tk.Frame(self.root)

        self.width = 700
        self.height = 300

        # Create a canvas and scroll bar so the notebook can be scrolled
        self.nb_canvas = tk.Canvas(self.root_f, width=self.width, height=self.height)
        self.nb_scrollbar = tk.Scrollbar(self.root_f, orient='horizontal')

        # Configure the canvas and scrollbar to each other
        self.nb_canvas.config(yscrollcommand=self.nb_scrollbar.set,
                              scrollregion=self.nb_canvas.bbox('all'))
        self.nb_scrollbar.config(command=self.nb_canvas.xview)

        # Create the frame for the canvas window, and place
        self.nb_canvas_window = tk.Frame(self.nb_canvas, width=self.width, height=self.height)
        self.nb_canvas.create_window(0, 0, window=self.nb_canvas_window)

        # Put the whole notebook in the canvas window
        self.nb = ttk.Notebook(self.nb_canvas_window)

        self.root_f.grid()
        self.nb_canvas.grid()
        self.nb_canvas_window.grid()
        self.nb.grid(row=0, column=0)
        self.nb_scrollbar.grid(row=1, column=0, sticky='we')

        self.nb.enable_traversal()

        for count in range(20):
            self.text = 'Lots of text for a wide Tab ' + str(count)
            self.tab = tk.Frame(self.nb)
            self.nb.add(self.tab, text=self.text)
            # Create the canvas and scroll bar for the tab contents
            self.tab_canvas = tk.Canvas(self.tab, width=self.width, height=self.height)
            self.tab_scrollbar = tk.Scrollbar(self.tab, orient='vertical')
            # Convigure the two together
            self.tab_canvas.config(xscrollcommand=self.tab_scrollbar.set,
                                      scrollregion=self.tab_canvas.bbox('all'))
            self.tab_scrollbar.config(command=self.tab_canvas.yview)
                # Create the frame for the canvas window
            self.tab_canvas_window = tk.Frame(self.tab_canvas)
            self.tab_canvas.create_window(0, 0, window=self.tab_canvas_window)

            # Grid the content and scrollbar
            self.tab_canvas.grid(row=1, column=0)
            self.tab_canvas_window.grid()
            self.tab_scrollbar.grid(row=1, column=1, sticky='ns')

            # Put stuff in the tab
            for count in range(20):
                self.text = 'Line ' + str(count)
                self.line = tk.Label(self.tab_canvas_window, text=self.text)
                self.line.grid(row=count, column=0)

        self.root.geometry('{}x{}+{}+{}'.format(self.width, self.height, 100, 100))

        return

#   MAIN (MAIN) =======================================================
def main():
    """ Run the app
    """
    # # Create the screen instance and name it
    root = tk.Tk()
    # # This wll control the running of the app.
    app = Main(root)
    # # Run the mainloop() method of the screen object root.
    root.mainloop()
    root.quit()

#   MAIN (STARTUP) ====================================================
#   This next line runs the app as a standalone app
if __name__ == '__main__':
    # Run the function name main()
    main()

Answer 1

好的，所以我想我现在明白了。标签位于笔记本内部，与笔记本电脑不兼容。因此，笔记本电脑将始终与其中的帧一样宽。为了获得我想要的效果，我需要将画布放入笔记本中，然后在画布上添加选项卡。这是不允许的。所以回到绘图板！

Answer 2

如果标签的宽度是“常量”，并且您知道有多少适合窗口的所需（固定？）大小，则可以通过隐藏不适合宽度的标签来创建“滚动标签”小部件。创建左右两个按钮，例如将一个按钮隐藏到右侧，并显示左侧的下一个隐藏按钮。

如果有办法找出标签的宽度（标签中的fontsize，填充等？），可以更加“动态”地完成。

Answer 3

我建议从以下位置组合解决方案：Is there a way to add close buttons to tabs in tkinter.ttk.Notebook?（以便能够关闭标签页）和此处：https://github.com/muhammeteminturgut/ttkScrollableNotebook，以便使用按钮而不是滚动条来处理宽度问题。要使其生效，需要进行两个更改：将“ notebookTab”变量加载为CustomNotebook，并通过在第一个答案中切换style.layout的最里面子元素的顺序，将关闭图标放在左侧。这将产生可滑动和关闭的自定义笔记本类型。

Tkinter笔记本 - 窗口宽度选项太多

3 个答案: