Python Tkinter选项卡和画布

Question

Objective: I am trying to create a GUI with a portion of the screen having "tabs" (information displayed can be changed based on selected tab), and another portion constantly displaying the same thing.

import ttk
import Tkinter


def demo():
    #root = tk.Tk()
    schedGraphics = Tkinter
    root = schedGraphics.Tk()


    root.title("Testing Bot")
    universal_height = 606
    canvas = schedGraphics.Canvas(root,width = 900, height = universal_height)

    nb = ttk.Notebook(root)


    # adding Frames as pages for the ttk.Notebook
    # first page, which would get widgets gridded into it
    page1 = ttk.Frame(nb,width = 300,height = universal_height)
    # second page
    page2 = ttk.Frame(nb,width = 300,height = universal_height)


    nb.add(page1, text='One')
    nb.add(page2, text='Two')

    #

    nb.grid()

    day_label = schedGraphics.Label(page1, text="Day1:")
    day_label.pack()
    day_label.place(x=0, y=30)

    day_label = schedGraphics.Label(page2, text="Day2:")
    day_label.pack()
    day_label.place(x=0, y=30)


    canvas.create_rectangle(50,500,300,600,fill = "red")
    canvas.grid()



    root.mainloop()

if __name__ == "__main__":
    demo()

Problems:

1. In the current configuration the tabs are located in the MIDDLE of the screen not on the left side.

2. If I change canvas.grid() to canvas.pack() it doesn't actually open any window?

3. The rectangle on canvas does not appear!

Thank you.

Answer 1

1. To do this, when gridding your notebook, pass the argument column and choose 0, so that it will be located at the far left, like this:

   nb.grid(column=0)

2. That's because you have to chose, for your tkinter app, between .grid() and .pack() : the two are not compatible. As you used .grid() before, the window won't open and a TclError pops up.

3. Your canvas is in fact hidden under the notebook. To fix that, set the row argument when using grid to 0, so that it is at the top, like this:

   canvas.grid(column=1, row=0)

Final code:

import Tkinter
import ttk


def demo():
    #root = tk.Tk()
    schedGraphics = Tkinter
    root = schedGraphics.Tk()

    root.title("Testing Bot")
    universal_height = 606

    nb = ttk.Notebook(root)

    # adding Frames as pages for the ttk.Notebook
    # first page, which would get widgets gridded into it
    page1 = ttk.Frame(nb, width= 300,height = universal_height)
    # second page
    page2 = ttk.Frame(nb,width = 300,height = universal_height)

    nb.add(page1, text='One')
    nb.add(page2, text='Two')

    nb.grid(column=0)

    day_label = schedGraphics.Label(page1, text="Day1:")
    day_label.pack()
    day_label.place(x=0, y=30)

    day_label = schedGraphics.Label(page2, text="Day2:")
    day_label.pack()
    day_label.place(x=0, y=30)

    canvas = schedGraphics.Canvas(root, width=900, height=universal_height)
    canvas.create_rectangle(50, 500, 300, 600, fill="red")
    canvas.grid(column=1, row=0)

    root.mainloop()

if __name__ == "__main__":
    demo()

I hope this helps !