Python | forget_pack() and forget_grid() method in Tkinter
If we want to unmap any widget from the screen or toplevel then forget() method is used. There are two types of forget method forget_pack()forget() ) and forget_grid() which are used with pack() and grid() method respectively.
forget_pack() method –
Syntax: widget.forget_pack() widget can be any valid widget which is visible.
Code #1:
# Imports tkinter and ttk module from tkinter import * from tkinter.ttk import * # toplevel window root = Tk() # method to make widget invisible # or remove from toplevel def forget(widget): # This will remove the widget from toplevel # basically widget do not get deleted # it just becomes invisible and loses its position # and can be retrieve widget.forget() # method to make widget visible def retrieve(widget): widget.pack(fill = BOTH, expand = True) # Button widgets b1 = Button(root, text = "Btn 1") b1.pack(fill = BOTH, expand = True) # See, in command forget() method is passed b2 = Button(root, text = "Btn 2", command = lambda : forget(b1)) b2.pack(fill = BOTH, expand = True) # In command retrieve() method is passed b3 = Button(root, text = "Btn 3", command = lambda : retrieve(b1)) b3.pack(fill = BOTH, expand = True) # infinite loop, interrupted by keyboard or mouse mainloop() |
chevron_right
filter_none
Output:
After forget
After retrieval
Notice the difference in the position of Button 1 before and after forget as well as after retrieval.
forget_grid() method –
Syntax: widget.forget_grid() widget can be any valid widget which is visible.
Note : This method can be used only with grid() geometry methods.
Code #2:
# Imports tkinter and ttk module from tkinter import *from tkinter.ttk import * # toplevel window root = Tk() # method to make widget invisible # or remove from toplevel def forget(widget): # This will remove the widget from toplevel # basically widget do not get deleted # it just becomes invisible and loses its position # and can be retrieve widget.grid_forget() # method to make widget visible def retrieve(widget): widget.grid(row = 0, column = 0, ipady = 10, pady = 10, padx = 5) # Button widgets b1 = Button(root, text = "Btn 1") b1.grid(row = 0, column = 0, ipady = 10, pady = 10, padx = 5) # See, in command forget() method is passed b2 = Button(root, text = "Btn 2", command = lambda : forget(b1)) b2.grid(row = 0, column = 1, ipady = 10, pady = 10, padx = 5) # In command retrieve() method is passed b3 = Button(root, text = "Btn 3", command = lambda : retrieve(b1)) b3.grid(row = 0, column = 2, ipady = 10, pady = 10, padx = 5) # infinite loop, interrupted by keyboard or mouse mainloop() |
chevron_right
filter_none
Output:
After Forget
After Retrieval
Notice that the position of Button 1 remains same after forget and retrieval. With grid_forget() method, you can place it at any grid after retrieval but generally, the original grid is chosen.
Recommended Posts:
- Python | after method in Tkinter
- Python | grid() method in Tkinter
- minsize() method in Tkinter | Python
- Python | geometry method in Tkinter
- resizable() method in Tkinter | Python
- destroy() method in Tkinter | Python
- Python | pack() method in Tkinter
- iconphoto() method in Tkinter | Python
- maxsize() method in Tkinter | Python
- Python | place() method in Tkinter
- Python Tkinter | grid_location() and grid_size() method
- Python Tkinter | Moving objects using Canvas.move() method
- Python GUI - tkinter
- Different messages in Tkinter | Python
- Python Tkinter - Message
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.
