I'm new to the Tkinter module (and quite new to python) I can't for the life of me figure out how to use the remove or forget methods to hide widgets in a grid. I can't seem to find relevant examples online and the tutorial documents have given me everything but the syntax. Below is the code I've been using to try and figure it out. Apologies if this overly trivial...
from tkinter import *
from tkinter import ttk
def delete():
#where I would like to delete the label 'label'
window = Tk()
window.title("Window")
window.configure(background='#e4e5ff')
label = ttk.Label(window, text='text').grid(column=1, row=0)
ttk.Button(window, text='text',command = delete).grid(column=2,row=0)
window.mainloop()
To do that you will have to use 2 lines to define and layout the widget (which is good practice anyway).
from tkinter import *
from tkinter import ttk
def delete():
label.grid_forget()
window = Tk()
window.title("Window")
window.configure(background='#e4e5ff')
label = ttk.Label(window, text='text')
label.grid(column=1, row=0)
btn = ttk.Button(window, text='text',command = delete)
btn.grid(column=2,row=0)
window.mainloop()
However, I suspect this is an XY problem. Are you trying to delete it in order to replace it with another Label? If so, you need to update the current label, not delete it and replace it.
def delete():
label.config(text='new_text')
Related
I have a program in python which in which I use Listboxes, buttons and labels. So today I came conflicting with a problem. I wanted to make my listbox appear when a button is clicked and disappear when the same button is clicked again. How can I achieve this? I tried using the winfo_ismapped() method but didnt seem to work. I think I might have done something crazy. If so, please point it out and give me a corrected answer. Else please tell me a better way to do it.
My Code:
import tkinter as tk
from tkinter import *
root = tk.Tk()
root.geometry('500x500')
def showMenu():
overlay = Listbox(root, bg="green", height=22, width=58)
if overlay.winfo_ismapped() == 0:
overlay.place(x=0,y=35)
else:
overlay.placeforget()
button = tk.Button(root,text="place/remove", command=showMenu)
button.place(x=0,y=0)
root.mainloop()
Actually it comes when I press the button but hide after I press it again.
In the same way I have another issue with these labels too.
CODE:
import tkinter as tk
root = tk.Tk()
def placeFun():
successtext = tk.Label(root, text="Success", anchor='nw', bg="#212121", fg="#ff3300",font=("Consolas", 15, "bold"))
if successtext.winfo_ismapped() == 0:
successtext.place(x=0,y=50)
else:
succestext.forget()
button = tk.Button(root, text='place/rem', width=25, command=placeFun)
button.place(x=0,y=0)
root.mainloop()
Please Note: I want a professional way to handle this, I said it because, I know a way in which we use variables like:
globalvartimes = 0
def somefunc():
if times % 2 == 0:
show the listbox
global times
times += 2
else:
remove the listbox
times += 1
*This shows the listbox when times is even and remove it when it's odd.
These makes the code look non-professional and long.
The problem is every time showMenu() is called another Listbox is created. To fix that, create the Listbox outside of the function (so it's a global).
(I also noticed you misspelled the name of place_forget() method.)
import tkinter as tk
from tkinter import *
root = tk.Tk()
root.geometry('500x500')
def showMenu():
if overlay.winfo_ismapped(): # Placed?
overlay.place_forget()
else:
overlay.place(x=0,y=35)
overlay = Listbox(root, bg="green", height=22, width=58)
button = tk.Button(root,text="place/remove", command=showMenu)
button.place(x=0,y=0)
root.mainloop()
This looks like it is what is wrong with your Label example, too.
Note: If you want to write "professional" code, I suggest you read (and start following) the
PEP 8 - Style Guide for Python Code.
I'm aware this is probably a newb question, but I have yet to be able to find an answer. Here's a snippet of my code, that has a root window containing a button to open a Toplevel. The Toplevel pulls a random line from a text file to function as a sort of idea generator.
import random, fileinput
import tkinter as tk
from tkinter import *
root = tk.Tk()
root.title('Daydreamer')
#fname should be the file name of the image in working directory
fname = "bg.gif"
bg_image = tk.PhotoImage(file=fname)
#get width and height of image
w = bg_image.width()
h = bg_image.height()
#size window correctly
root.geometry("500x400")
cv = tk.Canvas(width=w, height=h)
cv.pack(side='top', fill='both', expand='yes')
cv.create_image(0,0,image=bg_image,anchor='nw')
#add a frame for text
mainframe=tk.Frame(root)
#new window for inspirations
def inspirations():
top = Toplevel(root)
top.geometry=("100x100")
top.title("Inspiration")
def idea():
textidea=None
for line in fileinput.input('textlist.txt'):
if random.randrange(fileinput.lineno())==0:
textidea=line
entrytext=tk.Text(top)
entrytext.insert(INSERT, textidea)
entrytext.insert(END, "Or press the Inspire Me button again for another idea!")
entrytext.pack()
idea()
top.mainloop()
#add buttons
btn1 = tk.Button(cv, text="Inspire Me", command=inspirations)
btn1.pack(side='left', padx=10, pady=5, anchor='sw')
root.mainloop()
Problem is, that Toplevel always comes out absolutely huge (larger than my root window), which looks incredibly silly for the small amount of content being displayed in it. Am I missing something really minute and stupid here? Help much appreciated.
The problem is that you aren't calling the geometry method, you're replacing it with a string.
Change this:
top.geometry=("100x100")
to this:
top.geometry("100x100")
I'm making a project in Tkinter Python and I want users to select an attribute from a Combobox widget and press a button and that attribute will be stored in a variable. I've searched all over the web, but I can't make heads or tails of the code and have no idea how to store this attribute. Can someone tell me how to do this
I've tried the .get thing... (module? widget?) but that is not working and as I said, the internet ain't no help.
This is my basic code with the window and the Combobox:
from tkinter import *
from tkinter import ttk
master = Tk()
ver = ttk.Combobox(master, state="readonly", values=["test1", "test2"]).pack()
Button(master, text="Run").pack()
master.mainloop()
I want to be able to store the selected item in the Combobox and put it in a variable.
pack returns None if you want to assign to a variable, you must do it on a separate line.
If you want action, Button requires a command key word arg to which you assign a callback.
After you have fixed the mistakes, you can use the get method on the Combobox:
import tkinter as tk
from tkinter import ttk
def print_selected():
print(combo.get())
master = tk.Tk()
combo = ttk.Combobox(master, state="readonly", values=["test1", "test2"])
combo.pack()
tk.Button(master, text="Run", command=print_selected).pack()
master.mainloop()
I am creating a project using tkinter and when I create a window, I couldn't seem to get the window title to center itself (Like most programs nowadays). Here's the example code:
from tkinter import *
root = Tk()
root.title("Window Title".center(110))# Doesn't seem to work
root.mainloop()
Is there a way to center the window title up ? Thanks in advance
There is nothing you can do. Tkinter has no control over how the window manager or OS displays the titles of windows other than to specify the text.
I came up with a trick that does the job and it consists in simply adding as much blank space before the title:
import tkinter as tk
root = tk.Tk()
root.title(" Window Title")# Add the blank space
frame = tk.Frame(root, width=800, height=200, bg='yellow')
frame.grid(row=0,column=0)
root.mainloop()
Output:
Alternatively, you can use a string consisting of an empty space and concatenate it to the title after multiplication. I mean:
import tkinter as tk
root = tk.Tk()
blank_space =" " # One empty space
root.title(80*blank_space+"Window Title")# Easier to add the blank space
frame = tk.Frame(root, width=800, height=200, bg='yellow')
frame.grid(row=0,column=0)
root.mainloop()
More adding onto what Billal suggested is this example that adjust depending on the window size. I still wouldn't recommend it since it's just a hack for visual aesthetics but if you really want to have it.
import tkinter as tk
def center(e):
w = int(root.winfo_width() / 3.5) # get root width and scale it ( in pixels )
s = 'Hello Word'.rjust(w//2)
root.title(s)
root = tk.Tk()
root.bind("<Configure>", center) # called when window resized
root.mainloop()
width=root.winfo_screenwidth()
spacer=(" "*(int(width)//6))
root.title(spacer+"Your title")
This is not that much perfect but this will work.
I'm having some trouble figuring out how to use grid properly with tkinter. I just want two labels to appear side by side.
When I do the following, they appear in a separate window from my app. I'm confused because I have buttons on my app that appear as I want them(not using grid), but I can't quite figure out the labels in a grid.
//this is just a snippet from a function
self.root = tk.Tk()
tk.Label(master=self.root, text=directory).grid(row=0,column=0)
tk.Label(master=self.root, text=directory).grid(row=0,column=1)
The root window is created in a different part of the app, so all I'm doing here is making another one (I think). I just want the labels to appear in the window that has already been created but I can't figure out what I'm supposed to reference it to.
This is in a separate file that includes the file with the code above
from Tkinter import *
import tkinter as tk
import widgetActions
import shutil
class mywidgets(widgetActions.Actions):
def __init__(self,root):
frame = tk.Frame(root)
self.makeMenuBar(frame)
frame.pack()
frame.config(width=400)
self.body()
return
def makeMenuBar(self,frame):
menubar = Frame(frame,relief=RAISED,borderwidth=1)
menubar.pack()
mb_file = Menubutton(menubar,text='file')
mb_file.pack(side=LEFT)
mb_file.menu = Menu(mb_file)
mb_file.menu.add_command(label='open', command = self.openfile)
mb_file.menu.add_command(label='close', command = menubar.quit)
mb_file['menu'] = mb_file.menu
return
def body(self):
self.filename()
def main():
root = tk.Tk()
k=mywidgets(root)
root.title('menu bar')
root.mainloop()
main()
You cannot create two instances of Tk. As you observed, you will get two windows. That's not the only problem, just the most obvious one.
You need to pass in a reference to the winget that is to contain these labels. Or, store the root window as a global variable, or as an attribute of an object.
To position the 2 labels side by side i.e label1 and label2:
label1.grid(column=0, row=0)
label2.grid(column=1, row=0)
That should do it