The use of Tkinter layout management grid in Python

pack, grid and place are all used to manage the layout of all components under the same parent, where:

pack arranges components in the order they are added grid arranges components in rows/columns place allows the programmer to specify the size and position of components

When should I use the grid manager?

The grid manager is arguably the most flexible of Tkinter's three layout managers. If you only want to learn to use one layout manager, grid is definitely the one to use. gird is especially handy when you're designing dialog boxes. If you've been using pack to construct window layouts, you'll wish you hadn't learned grid earlier. It's easy to use a grid to do what you've been building with many frames and packs.

Note: Don't mix pack and grid in the same parent component, because Tkinter is seriously trying to figure out which layout manager to use first. ...... So much so that you can wait half an hour and Tkinter is still struggling with the result!

usage

To arrange components using grid, just tell it where you want to place them (row/column, row option for rows, cloumn option for columns). In addition, you don't have to indicate the size of the grid (the location where the grid distributes the components is called the grid) in advance, because the manager calculates it automatically.

import tkinter as tk
 
root = ()
 
# column The default value is 0
(root, text="Username").grid(row=0)
(root, text="Password.").grid(row=1)
 
(root).grid(row=0, column=1)
(root, show="*").grid(row=1, column=1)
 
()

By default components are centered in the corresponding grid, you can modify this feature by using the sticky option. The values that can be used for this option are "e", "w", "s", "n" (ewsn stands for east, west, south, north, north, south, left, west, right, east) and combinations of them. Therefore, we can make the Label left-aligned by sticky = "w":

(root, text="Username").grid(row=0, sticky="w")
(root, text="Password.").grid(row=1, sticky="w")

Sometimes you may need to use several grids to place a component, can you do that? Of course you can, you just need toSpecifying rowspan and columnspan allows you to span rows and columns:

import tkinter as tk
 
root = ()
 
# column The default value is 0
(root, text="Username").grid(row=0, sticky="w")
(root, text="Password.").grid(row=1, sticky="w")
 
(root).grid(row=0, column=1)
(root, show="*").grid(row=1, column=1)
 
photo = (file="")
(root, image=photo).grid(row=0, column=2, rowspan=2, padx=5, pady=5) #rowspan=2 across two lines
 
(text="Submit", width=10).grid(row=2, columnspan=3, pady=5) #columnspan=3 across three columns
 
()

methodologies

Note: All methods below apply to all components.

grid(**options)
-- The table below details the specific meaning and usage of each option:

grid_bbox(column=None, row=None, col2=None, row2=None)
-- Returns a 4-tuple description of the bounding rectangle where the component is located -- If the column and cow parameters are specified, returns the bounding rectangle description of the component at that location (column, cow)
-- if 4 arguments are specified, returns a qualified rectangular description of all components from (column, cow) to (col2, row2)
-- e.g. grid_bbox(0, 0, 1, 1) returns the bounding rectangle where the 4 components are.

grid_columnconfigure(index, **options)
-- Setting column properties
-- Note: This sets the columns of the grid owned by the component.
-- The options that can be set and their meanings are as follows:

grid_configure(**options)
-- Same as grid()

grid_forget()
-- "Remove" the component from the screen
-- doesn't destroy the component, just doesn't see it anymore
-- Components that have been "deleted" can be displayed through a grid or other layout manager, but the options settings for the grid they are on will not be restored.

grid_info()
-- Returns the options for the current grid as a dictionary.

grid_location(x, y)
-- Returns the grid position at (or near) the given coordinates (x, y).
-- The return value is a 2-tuple representation of the grid (columns, rows).

grid_propagate(flag)
-- If turned on, the parent component is automatically resized to accommodate all child components
-- default is on (flag = True)
-- This method only applies to the parent component

grid_remove()
-- Same as grid_forget(), but restores remembering the option settings of the grid the component is on

grid_rowconfigure(index, **options)
-- Setting of line attributes
-- Note: This sets the rows of the grid owned by the component.
-- The options that can be set and their meanings are as follows:

grid_size()
-- Returns the size of the grid owned by the component.
-- The return value is a 2-tuple representing the number of grids (columns, rows) respectively

grid_slaves(row=None, column=None)
-- Returns all subcomponents of the component as a list
-- This method only applies to the parent component

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