Treeview

ttk.Treview is a class that is used to display data in a hierarchical or tabular form. This page focuses on the properties of the tree view.

See more detailed description on the official documentation section.

import os
from pathlib import Path
os.chdir(str(Path(os.getcwd()).parent.parent))

import tkinter as tk
from tkinter import ttk

from tkinter_files.screenshot import take_screenshot

Select element

Sometimes you’ll need to create a feature that allows you to display a particular value in the treeview. Key methods here are

• selection_set select specific item.

• see scroll values to such position to see specified element.

Here is an example that builds a simple application that allows to find elements with a certain index.

root = tk.Tk()
root.geometry("200x300")

tree = ttk.Treeview(root, columns=("ind"), show='headings')
tree.pack()

entry = tk.Entry(root)
entry.pack()
button = tk.Button(root, text="Go to item")
button.pack()

for i in range(100):
    tree.insert(
        parent="",
        index="end",
        values=f"value\ {str(i)}",
        iid=i
    )

def go_to_obs(event):
    value = entry.get()
    # This is key part - here is called `selection_set` and `see`
    tree.selection_set(value)
    tree.see(value)

button.bind("<Button-1>", go_to_obs)

root.mainloop()

You have to specify iid in see and selection_set methods. The following example illustrates this:

We have two items where:

• selection 1 corresponds to the tiger value.

• selection 2 corresponds to the girafe value.

After creating ayout we called selection_set("selection 2").

root = tk.Tk()

tree = ttk.Treeview(root, columns=("ind"), show='headings')
tree.pack()
tree.insert(
    parent="", index="end", values="tiger", iid="selection 1"
)
tree.insert(
    parent="", index="end", values="girafe", iid="selection 2"
)

tree.selection_set("selection 2")

root.after(200, take_screenshot, root)
root.mainloop()

As a result we have selected the girafe element which corresponds to the iid=selection 2.