Python GUI tkinter grid用法

import tkinter as tk

my_w = tk.Tk()

my_w.geometry("300x200")  

l1 = tk.Label(my_w, text='row=1,column=1 ')

l1.grid(row=1,column=1) 

l2 = tk.Label(my_w, text=' row=1,column=2')

l2.grid(row=1,column=2) 

l3 = tk.Label(my_w, text='row=2,column=1 ')

l3.grid(row=2,column=1) 

l4 = tk.Label(my_w, text=' row=2,column=2')

l4.grid(row=2,column=2) 

my_w.mainloop()

import tkinter as tk

my_w = tk.Tk()

my_w.geometry("250x100")  

my_w.title("alex9ufo")  # Adding a title

l1 = tk.Label(my_w,  text='F Name (sticky=\'W\')' ) #added one Label 

l1.grid(row=1,column=1,sticky='W') 

e1 = tk.Entry(my_w,   width=10,bg='yellow') # added one Entry box

e1.grid(row=1,column=2) 

l2 = tk.Label(my_w,  text='L Name (sticky=\'E\')')  # 

l2.grid(row=2,column=1,sticky='E') 

e2 = tk.Entry(my_w,   width=10,bg='yellow') # added one Entry box

e2.grid(row=2,column=2)

l3 = tk.Label(my_w,  text='Add Door No and Street address')   

l3.grid(row=3,column=1,sticky='W') 

e3 = tk.Entry(my_w,   width=10,bg='yellow') # added one Entry box

e3.grid(row=3,column=2)

my_w.mainloop()

import tkinter as tk

my_w = tk.Tk()

my_w.geometry("300x150")  

l1 = tk.Label(my_w, text='First', width=20)

l1.grid(row=1,column=1) 

l2 = tk.Label(my_w, text='Second', width=20)

l2.grid(row=2,column=1) 

l3 = tk.Label(my_w, text='Third', width=20)

l3.grid(row=3,column=1) 

t1 = tk.Text(my_w,  height=3, width=8,bg='yellow') #text box

t1.grid(row=1,column=2,rowspan=3)

my_w.mainloop()

ipadx,ipady,padx,pady options

Tkinter window grid layout using padx pady and internal padding by using ipadx, ipady

ipadx and ipady adds inner padding or the internal padding of the widget border.

l4=tk.Label(my_w,text='ipadx=50,ipady=50',
	borderwidth=2,relief='ridge')
l4.grid(row=2,column=2,ipadx=50,ipady=50)

padx and pady adds padding from the widget to the grid boarder.

l4=tk.Label(my_w,text='padx=50,pady=50',
	borderwidth=2,relief='ridge')
l4.grid(row=2,column=2,padx=50,pady=50)

grid_size()

This will return a tuple showing first empty columns and rows . In this example we have used upto row=3 and column=3 so we will get output as (4,4).

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("300x150")  
l1 = tk.Label(my_w, text='First', width=8)
l1.grid(row=1,column=1) 
l2 = tk.Label(my_w, text='Second', width=8)
l2.grid(row=2,column=2) 
l3 = tk.Label(my_w, text='Third', width=8)
l3.grid(row=3,column=3) 

print(my_w.grid_size()) # tuple  columns , rows 

my_w.mainloop()

Output

(4, 4)

You can remove the last element and check the output. We will set the value as column=2 for last element.

l3 = tk.Label(my_w, text='Third', width=8)
l3.grid(row=3,column=2) 

Output

(3, 4)

grid_slaves(row=None, column=None)

We will get a list of widgets manage by the grid.

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("300x150")  
l1 = tk.Label(my_w, text='First', width=8)
l1.grid(row=1,column=1) 
l2 = tk.Label(my_w, text='Second', width=8)
l2.grid(row=2,column=2) 
l3 = tk.Label(my_w, text='Third', width=8)
l3.grid(row=3,column=2) 

print(my_w.grid_slaves()) 

my_w.mainloop()

Output

[<tkinter.Label object .!label3>, <tkinter.Label object .!label2>,
 <tkinter.Label object .!label>]

We can use row and column number to get the widget.

print(my_w.grid_slaves(2,2)) 

Output

[<tkinter.Label object .!label2>]

grid_remove()

Remove the widget from the perticular grid. Can be added again.

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("300x150")  
l1 = tk.Label(my_w, text='First', width=8)
l1.grid(row=1,column=1) 
l2 = tk.Label(my_w, text='Second', width=8)
l2.grid(row=2,column=2) 
l3 = tk.Label(my_w, text='Third', width=8)
l3.grid(row=3,column=2) 
l3.grid_remove()
my_w.mainloop()

To restore the widget in same location we have to just use grid()

l3.grid()

grid_forget()

Remove the widget from the perticular grid. Can be added again at the new location. We have to specify the location while restoring, by default it takes the next new location.

l3.grid_forget()

To restore at the same location we have to specify the row and column.

l3.grid(row=3,column=2)

Removing after some time delay

We can use the widget as message box and want to remove it after 300 seconds.

l3.after(3000, lambda: l3.grid_remove() )

Remove all widgets

for w in my_w.grid_slaves(): # Loop through each row 
    w.grid_forget() # remove the row

Remove all widgets of 2nd row only

for w in my_w.grid_slaves(2):
    w.grid_forget() 

Remove all widgets of 2nd column

for w in my_w.grid_slaves(None,2):
    w.grid_forget()

Delete widgets

By using destroy() method we can delete a widget permanently. We can't restore it again.

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("300x150")  

b1=tk.Button(my_w,text='Hide: \n grid_forget()',
      command=lambda:l1.grid_forget())
b1.grid(row=0,column=0,padx=2,pady=10)
b2=tk.Button(my_w,text='Display : \n grid()',
      command=lambda:l1.grid())
b2.grid(row=0,column=1,padx=2,pady=10) 
b3=tk.Button(my_w,text='Destroy : \n destroy()',
      command=lambda:l1.destroy())
b3.grid(row=0,column=2,padx=2)

l1 = tk.Label(my_w, text='Hi Welcome', width=10)
l1.grid(row=1,column=0,pady=10) 
my_w.mainloop()

By using grid_slaves() and grid_forget() we can refresh the window after any delete or update operation. See example of deleting record

grid_info()

All information about the widget layout in the grid.

import tkinter  as tk 
from tkinter import *
my_w = tk.Tk()
my_w.geometry("400x200")  # Size of the window 
my_w.title("www.plus2net.com")  # Adding a title
l1 = tk.Label(my_w, text='row=1,column=1 ')
l1.grid(row=1,column=1,padx=10,pady=10,ipadx=3,ipady=4) 

#dictionary elements(row,column,ipadx,ipday,sticky,rowspan,columnspan)
print(l1.grid_info()) # dictionary all elements value 
print(l1.grid_info()['column'])# 1
print(l1.grid_info()['padx'])  # 10         

my_w.mainloop()  # Keep the window open