🔒 Trying to child class a tkinter widget, however setting width and height attributes isn't working.

[quasi needle]

As in the title, in the constructor of the child class I'm trying to set a predetermined width and height, but when a create the widget those attributes are no taken into account.

Relevant code:

import tkinter as tk
from tkinter import ttk

class ZombieSelector(tk.LabelFrame):
    def __init__(self,
                 master,
                 options: list=[],
                 max: int=10,
                 cnf={},
                 **kwargs) -> None:
        kwargs = cnf or kwargs

        dropDown = ttk.Combobox(master, state="readonly", values=options, width=15)
        dropDown.bind("<<ComboboxSelected>>", self.__addZombie)

        super().__init__(master, labelwidget=dropDown, width=184, height=max*20+42, **kwargs)

        ttk.Label(self, text="Type").grid(row=0, column=0)
        ttk.Label(self, text="Alive").grid(row=0, column=1)
        ttk.Label(self, text="Dead").grid(row=0, column=2)

[wispy heron]

@quasi needle

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[carmine breach]

try moving the super call to before you make the combobox

do you want the combobox inside of master or inside the label frame?

in which case, it should be ttk.Combobox(self, ...)

[quasi needle]

I want the combobox as the label for the label frame

[carmine breach]

oh I didn't even know that was possible

[quasi needle]

I've had it working with setting the master of both the combobox and the labelframe to the same widget before I tried creating this child class:

class FiftyPercent(tk.Toplevel):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        self.iconbitmap("assets/icon.ico")
        self.title("50% Rule")
        self.resizable(False, False)

        self.__toolbar = stk.ToolBar(self, tearoff=0)
        self.__toolbar.add_cascade("file", menukw={"tearoff": 0}, cascadekw={"label": "File"})
        self.__toolbar.file.add_command(label="Close", command=lambda: self.destroy()) # type: ignore
        self.__toolbar.file.add_command(label="Exit", command=lambda: exit()) # type: ignore
        self.config(menu=self.__toolbar)

        with open("zombieHealth.json", "r") as file:
            jsondict = json.load(file)

        ttk.Label(self, text="Zombies").grid(row=0, column=0)

        self.__zombiesDropDown = ttk.Combobox(self, state="readonly", values=list(jsondict.keys()), width=15)
        self.__zombiesDropDown.bind("<<ComboboxSelected>>", self.__addZombie)
        self.__zombiesList = tk.LabelFrame(self, labelwidget=self.__zombiesDropDown)
        self.__zombiesList.grid(row=1, column=0, rowspan=10, padx="2p", pady="2p", ipadx="1p", ipady="1p")

[carmine breach]

is that part working correctly, but it's just the width/height that's a problem?

[quasi needle]

just the width and height

[carmine breach]

ahh ok

[quasi needle]

Old method on the left, new on the right

[carmine breach]

seems that labelframes will only size up to whatever their contents are

[quasi needle]

however, this seems to work:

tk.LabelFrame(self, labelwidget=ttk.Combobox(self), width=184, height=8*20+42).grid(row=1, column=1, padx="2p", pady="2p", ipadx="1p", ipady="1p")

[carmine breach]

yeah this seems like more of a pack/grid issue than a labelframe issue

[quasi needle]

both methods are using the same .grid args

[carmine breach]

hmm I'm really not sure then. This is the extent of my tkinter layout knowledge, haha

[quasi needle]

lol, np, hopefully someone else has an idea

it doesnt help that the most comprehensive docs ive found for tkinter were last updated in 2014

[quasi needle]

You were right! The actual widget must do something funky on the backend, because I had to call self.grid_propagate(False) to prevent the widget from resizing to fit its contents. Now have it working with the child class:

[wispy heron]

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