Problem while dynamically creating Entry widgets in pop-up window in tkinter

Question

My goal is to make a pop-up window that gets the strings from Entry widgets, the number of widgets is determined by the user on a primary window. So if the user inputs 5 fields are required then the pop-up should have 5 Entry widgets to get 5 different strings, if the user inputs 4 the pop-up has 4 widgets and so forth. Using help from this question I wrote the following code:

import tkinter as tk

root = tk.Tk()
root.title("Main Window")

class EntryButton(object):
    def __init__(self, rootWin, numberEn):
        self.number = numberEn
        self.entry = tk.Entry(rootWin)
        self.button = tk.Button(rootWin, text="test", command=self.on_click)
        self.entry.grid(row=numberEn, column=0)
        self.button.grid(row=numberEn, column=1)
        self.value = None

    def on_click(self):
        self.value = self.entry.get()

def popup_window(numberOfEntries, storageDict):
    window = tk.Toplevel()
    window.title("Pop-Up Window")

    dictionary = dict()
    for i in range(0, numberOfEntries):
        dictionary[i] = EntryButton(window, i)
    
    storageDict = dictionary

numberVar = tk.IntVar()
tk.Label(root, text='Enter how many markers you are using:', font=('bold', 10)).grid(column= 0, row= 3)
tk.Entry(root, textvariable=numberVar).grid(column= 1, row=3)
number = numberVar.get()

mainStorage = dict()
initialPlotBtn = tk.Button(root, text='Start Labelling')
initialPlotBtn.config(command =lambda:
    popup_window(numberOfEntries=number, storageDict=mainStorage)
)
initialPlotBtn.grid(column = 1, row = 4)

root.mainloop()

for key in mainStorage:
    print(key, mainStorage[key])

My main window works as seen here: MainWindowImg. However once creating the pop-up window it shows empty like this: Pop-upWindowImg.

I'm merely beginning to use tkinter, so there might be something i'm not getting here. Using Python 3.8.3 on Windows 10

acw1668 · Accepted Answer · 2020-08-13 04:10:11Z

1

You used value of number as an argument to popup_window() but number is zero because it is assigned right after the entry is created.

You should use numberVar.get() as the argument instead:

initialPlotBtn.config(command =lambda:
    popup_window(numberOfEntries=numberVar.get(), storageDict=mainStorage)
)

answered Aug 13, 2020 at 4:10

acw1668

48k5 gold badges30 silver badges39 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

PabAng Over a year ago

Thanks, it's such a small oversight now that I see it

Collectives™ on Stack Overflow

Problem while dynamically creating Entry widgets in pop-up window in tkinter

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related