In Tkinter, dynamic variables can be created using the StringVar() method. StringVar() is a special variable class in Tkinter that is used to associate a variable with one or more widgets. This allows the widget to automatically update whenever the variable changes.
To create a dynamic variable using StringVar(), you first need to import the Tkinter module:
import tkinter as tkNext, you can create a StringVar() object and assign it to a variable. This variable will hold the value of the dynamic variable:
dynamic_var = tk.StringVar()You can then use this dynamic variable with any widget that supports the ‘textvariable’ option, such as Labels, Entries, and Text widgets. For example, you can create a Label widget that displays the value of the dynamic variable:
label = tk.Label(root, textvariable=dynamic_var)
label.pack()Now, whenever you change the value of the dynamic variable, the Label widget will automatically update to display the new value.
You can also set an initial value for the dynamic variable when you create it:
dynamic_var.set("Hello, world!")This will display the initial value in the Label widget when the program starts.
To update the value of the dynamic variable, you can use the set() method:
dynamic_var.set("New value")This will update the value of the dynamic variable and automatically update any widgets that are associated with it.
You can also get the current value of the dynamic variable using the get() method:
value = dynamic_var.get()
print(value)This will print the current value of the dynamic variable to the console.
Dynamic variables using StringVar() are very useful for creating interactive GUI applications in Tkinter. They allow you to easily update the value of widgets in response to user input or other events. By using StringVar() and associating it with widgets, you can create dynamic and responsive user interfaces in Tkinter.
Can I get information from a sensor into the textvariable ?
Perfect!!
Thank you so muchh broo!
excellent
Thank you for video guide!
I love indian tutorials , keep it going bro ❤
I followed your tutorial about "StringVar" but it still doesn't work for me.
I would like to store the selection from the “filedialog.askdirectory()” in my “entry1” box.
But that does not work. I also want to increase the height of my “entry6” but that is only possible with a label. I would like to raise it and left align with “Wrap text”.
Can you help me a little with this?
import customtkinter
import tkinter
from tkinter import *
import tkinter as tk
from tkinter import ttk
from tkinter import Tk, filedialog
customtkinter.set_appearance_mode("blue")
customtkinter.set_default_color_theme("dark-blue")
# root = customtkinter.CTk()
root = Tk()
root.geometry("800×700")
root.title("SPLCF3, Phase Out Programma.")
def open_file():
filepath = filedialog.askdirectory()
file = open(filepath, "r")
entry1.textIO = file
print()
def input_verwerking():
print("n")
print("The files will be collected in the folder: ", entry1.get())
print("The aircraft that wil be processed is: ", entry3.get())
# print(entry1.sel2.get())
print(sel2.get()) # I want to transfer this information to "entry1"
exit()
label = customtkinter.CTkLabel(root, text="SPL/CF3 A/C Phase Out System!", font=("Arial", 24))
label.pack(pady=30, padx=15)
frame = customtkinter.CTkFrame(master=root)
frame.pack(pady=10, padx=10, expand=True)
sel2 = StringVar()
def submit():
print("n")
def submit1():
open_file_path = filedialog.askdirectory() # Returns opened path as str
entry1 = ttk.Entry(master=frame, textvariable=sel2, width=27)
entry2 = tkinter.Label(master=frame, text="Select a the folder where to start :")
entry3 = ttk.Combobox(master=frame, values=["AAA", "BBB", "CCC", "DDD", "EEE", "FFF", "GGG",], font=("Ariel", 10), width=20)
entry4 = tkinter.Label(master=frame, text="Select an aircraft :")
entry5 = Button(master=frame, text="Browse", command=submit1)
entry6 = tkinter.Label(master=frame, width=100, height=20, textvariable=sel2)
button = customtkinter.CTkButton(master=frame, text="Start Processing", command=input_verwerking,
font=("Ariel", 16))
entry1.grid(row=2, column=2, pady=25, padx=10) # "Phase Out Folder" text in text box
entry2.grid(row=2, column=0, pady=25, padx=10) # "Select a the folder where to start :", label column 1
entry3.grid(row=3, column=2, pady=25, padx=20) # Aircraft selection, column 2
entry4.grid(row=3, column=0, pady=25, padx=10) # "Submit", "Select an aircraft :"
entry5.grid(row=2, column=3, pady=25, padx=10) # "Brows", column 3, row 4
entry6.grid(row=4, column=0, columnspan=16, pady=25, padx=10)
button.grid(row=9, column=2, pady=25, padx=10)
root.mainloop()
what if the string variable is inside a class? i'm having trouble with Stringvar as its not showing the variable value in my tkinter GUI.
Thanks you 👍👍👍👍💥💥💥
Brillant short tutorial. Just what I was looking for
Thanks guruji for sharing the concept so clear like water
Thank u very much Harsh, this video is really helpful !!
Thanks
Wow this is awesome, previously I was updating my labels with a function that used the .get() with an entry and then that same function replaced the entire label with another one updated but this is much much simpler
Excellent thanks.
Thank you bro, it also works with intVar()?
Brother please help me how i am access data one page to another page and both page are contain many classes how i am access value
Brother……how to access the stringvar() variable of one class into another class using python.
can you help me.
Thanks Brother