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I am fairly new to Tkinter but I am having trouble with some of the ttk features.

Currently, I have a ttk.notebook and in each tab of the notebook, I am packing a bunch of buttons and labels. These buttons are going off the screen of the notebook, so I am trying to implement a scrollbar for each tab. However, I can't figure out how to do this.

I am using a for loop to iterate through each tab I want to make. For each iteration, I am making a new frame and adding all my things there. Whenever I run this, all the tabs except the last one have a greyed out scroll bar. Only the last tab of the notebook has a functioning scrollbar. Can someone please help?

    for i,t in enumerate(wb[data][1]):
    if t.value:
        classes.append(t.value)
        mf = tk.Frame(table)
        mf.pack(fill='both',expand=True)

        bframe = tk.Frame(mf,width=120)
        bframe.pack(side=tk.LEFT)
        cv = tk.Canvas(mf,width=460)
        cv.pack(side=tk.RIGHT,fill='both')

        scrollbar = ttk.Scrollbar(mf, orient=tk.VERTICAL, command=cv.yview)
        scrollbar.pack(side=tk.RIGHT,fill=tk.Y)

        cv.configure(yscrollcommand=scrollbar.set)
        cv.bind('<Configure>', lambda e: cv.configure(scrollregion=cv.bbox("all")))

        tab = tk.Frame(cv)
        cv.create_window((0,0), window=tab, anchor='nw')

        b1 = tk.Button(bframe,text='Add Sessions',width=15,height=3)
        b1.pack()
        b2 = tk.Button(bframe,text='Cancel Class',width=15,height=3, command=lambda: cancelClass(data,table.tab(table.select(), 'text')))
        b2.pack()
        b3 = tk.Button(bframe,text='Edit',width=15,height=3)
        b3.pack()

        for rw in range(2,wb[data].max_row+1):
            tk.Label(tab,text=f'{wb[data].cell(row=rw,column=i+1).value}: {wb[data].cell(row=rw,column=i+2).value}').pack()
        tab.update()
        
        table.add(mf,text=t.value)

This is what I am currently doing. Ignore the 'wb[data]' and etc, that is for something else.

Athan ZXYT
  • 1
  • Same basic problem as https://stackoverflow.com/questions/10865116/tkinter-creating-buttons-in-for-loop-passing-command-arguments - although in your case it's the `cv.bind(...` that's the issue. The reference to `cv` inside that lambda is to the final value that the variable was assigned during the loop - in other words, during its final iteration. You need to capture the `cv` value from the iteration that created that particular tab. – jasonharper Mar 05 '22 at 20:59

0 Answers0