Develop Reference

How to make tkinter right click menu work on one widget only?

Is there a simple way to get the right click menu to open on texty only and not the whole window?
This was a quick mashup to illustrate my question. Inheriting from texty on line 25 was a shot in the dark, which didnt work, but it's close to a simple solution, like I am seeking. I was hoping to avoid programming a whole class each time I want to set a right click menu.
from tkinter import *
from tkinter import ttk
def menu_popup(event):
try:
popup.tk_popup(event.x_root, event.y_root, 0)
finally:
popup.grab_release()
win = Tk()
win.geometry("600x550+125+125")
e = Entry(win, width=50, font=('Helvetica', 11))
e.pack()
e.insert(0, "Some text....")
label = Label(win, text="Right-click to see a menu", font= ('Helvetica 18'))
label.pack(pady= 40)
texty=Text(win, height=10)
texty.pack()
popup = Menu(texty, tearoff=0)
popup.add_command(label="New")
popup.add_separator()
popup.add_command(label="Open")
popup.add_separator()
popup.add_command(label="Close")
win.bind("<Button-3>", menu_popup)
button = ttk.Button(win, text="Quit", command=win.destroy)
button.pack()
mainloop()

The widget on which the callback should be executed for the respective event is determined by the widget you call bind on(and the level of bind too*). So if you want the event to be identified within texty, then apply binding to it.
texty.bind("<Button-3>", menu_popup)
* There is bind_all which executes no matter which widget has focus or is called upon. Read 54.1. Levels of binding for more info.

How to start a second tkinter program from another and then close first?

I'm creating a tkinter gui that I would like to run. This app will do some house cleaning of sorts. It would check files, check for updates, give the user some information etc. Then I would like it to start another tkinter application and then close it self.
import tkinter as tk
import os
def StartProgram():
os.startfile("C:/WINDOWS/system32/notepad.exe")
root = tk.Tk()
frame = tk.Frame(root)
frame.pack()
button = tk.Button(frame, text="QUIT", fg="red", command= lambda: quit())
button.pack( side=tk.LEFT)
button2 = tk.Button(frame,text="Start my exe", command=lambda: StartProgram())
button2.pack(side=tk.LEFT)
root.maxsize(200,200)
root.minsize(200,200)
root.mainloop()
The problem I have so far is when I attempt to close the original app it closes the one it started as well.
EDIT: I also tried root.destroy(), root.quit()
Any suggestion how I might correct this?

Python: Reading from a spin box numbers and do following command of one

Good Morning/Evening,
I want to read a number from a spinbox, and if it is 2, it should print something. But my code does not work out. I've tried it with a slider instead of a spinbox and it worked out. But for me, it is really important to use a spinbox, so I hope somebody have an idea.
Code:
from tkinter import *
def a():
if spin.get()==2:
print("Hello World")
root = Tk()
root.geometry('300x100')
spin =Spinbox(root, from_=0, to=10,command=a)
button = Button(root, text='Enter')
button.pack(side=RIGHT)
spin.pack(side=RIGHT)
root.mainloop()

Adding to #coolCloud's answer I would suggest setting a textvariable for spinBox. So if the user changes it using the entry. It would automatically be updated.
Something like this:
from tkinter import *
def a(*event):
if text.get()=='2':
print("Hello World")
root = Tk()
root.geometry('300x100')
text = StringVar()
text.trace('w', a) # or give command=a in the button if you want it to call the event handler only when the button is pressed
spin =Spinbox(root, from_=0, to=10, textvariable=text)
button = Button(root, text='Enter')
button.pack(side=RIGHT)
spin.pack(side=RIGHT)
root.mainloop()

how to close a Thread from Tkinter While the Thread is running Python selenium

So, I made a small canvas window with tkinter which has 2 buttons, One is a start button, the other is a stop button. (I'll attach the GUI tkinter code down below. I wont add the Selenium part because I don't want to confuse anyone with mushed up code.) The start button calls a function thats threaded and that launches my "Reporting_Backbone.py" which is a selenium/pyautogui bot that does a bunch of stuff. My problem is that the stop button does not stop the "Reporting_Backbone.py". In the stop button function I've tried sys.exit() but the selenium and the GUI stay open (and running), I've tried daemons (which I might not have been using them correctly because that did nothing)I've tried setting the stop button function to a lambda (which just freezes the GUI, but not the selenium part) and I've tried setting up some kind of a killswitch as a last resort but honestly this thing wont die, its like Thanos fused with Majin Buu. It just keeps running. How do I make it so that the stop button works? I I'm hoping someone can help me with a solution and explanation. I am still new to coding but I am really loving it, if possible I would really like to understand what I am doing wrong. Thank you.
enter code here
import tkinter as tk
from PIL import Image, ImageTk
import time
import os
import threading
import sys
root = tk.Tk()
#Canvas for GUI
canvas = tk.Canvas(root, width=600, height=800)
canvas.grid(columnspan=3, rowspan=4)
canvas.configure(bg="#b9be9c")
#Button Starting
def start_report():
time.sleep(0.5)
start_text.set("Armed!")
os.system("python Reporting_Backbone.py")
#Button Stopping
def stop_craigslist():
stop_text.set('Stopped')
time.sleep(3)
sys.exit()
#Logo
logo = Image.open('Logo.png')
logo = ImageTk.PhotoImage(logo)
logo_label = tk.Label(image=logo)
logo_label.image = logo
#playing logo in window
logo_label.grid(column=1, row=0)
logo_label.configure(bg="#b9be9c")
#instructions
instructions = tk.Label(root, text="Click the 'Start' Button to begin.")
instructions.grid(columnspan=3, column=0, row=1)
instructions.configure(font=("Helvetica", 25) ,bg="#b9be9c")
#Start Button
start_text = tk.StringVar()
start_btn = tk.Button(root, textvariable=start_text, command=threading.Thread(target=start_report).start, font=("Helvetica", 18), fg="black", height=2, width=15)
start_text.set("Start")
start_btn.grid(column=1, row=2)
#Stop Button
stop_text = tk.StringVar()
stop_btn = tk.Button(root, textvariable=stop_text, command=threading.Thread(target=stop_craigslist).start, font=("Helvetica", 18), fg="black", height=2, width=15) #If I set this to a lambda function the Tkinter GUI Freezes up on me
stop_text.set("Stop")
stop_btn.grid(column=1, row=3)
root.mainloop()

You cannot stop the task created by threading.Thread(). Use subprocess instead:
import subprocess
...
proc = None
def start_report():
global proc
if proc and not proc.poll():
print("process is still running")
return
proc = subprocess.Popen([sys.executable, "Reporting_backbone.py"])
start_text.set("Armed!")
def stop_craigslist():
global proc
if proc:
proc.terminate()
proc = None
stop_text.set('Stopped')
...
start_btn = tk.Button(root, ..., command=start_report, ...)
...
stop_btn = tk.Button(root, ..., command=stop_craigslist, ...)
...

Tkinter Button Function Control by MessageBox

The code below shows part of my program and the issue im facing.
def checkAnswer():
mainAnswer = answer01.get()
if len(mainAnswer) == 0:
messagebox.showwarning(message='Please answer the question!')
return
if int(mainAnswer) != answer:
messagebox.showwarning(message='Incorrect! The correct answer is: ' + str(answer))
else:
nxtquest.config(state=NORMAL)
messagebox.showinfo(message='Correct! :)')question01 = Label(easy)
question01.grid(row=2, column=0)
answer01 = Entry(easy)
answer01.grid(row=3, column=2)
answer01.bind('<Return>', func=lambda e:checkAnswer())
start = Button(easy, text = "Start!", command=ask, bg='green', fg='white')
start.grid(row=3, column=3)
nxtquest = Button(easy, text='Next Question', command=ask)
nxtquest.grid(row=5, column=2)
checkbut = Button(easy, text='Check', command=checkAnswer)
checkbut.grid(row=4, column=2)
#check button and answer01 enabled after start pressed
launch = 1
if launch == 1:
answer01.config(state=DISABLED)
checkbut.config(state=DISABLED)
nxtquest.config(state=DISABLED)
The issue which im struggling here is that whenever i run the program everything is okay. When the window is displayed checkbut, nxtquest and label answer01 are greyed out (disabled).
The start button enables only checkbut and answer01 and then is destroyed. (So far so good)
So nxtquest will enable once the input is correct as seen in the
else:
nxtquest.config(state=NORMAL)
But when I reach another question the nxtquest button is already enabled, this is the problem!
How could I make it so the button will enable itself only after the warning message box is displayed?
Could I ask for some help with this and possibly suggestions if you see any rookie mistakes ?

Whilst I don't know of any way you could do this with a messagebox widget (although I'm sure there's an event you could use as the trigger) you can most certainly do this by substituting the messagebox with a Toplevel widget and using .protocol("WM_DELETE_WINDOW", callback()) on the widget.
This would mean that whenever the Toplevel widget was "closed" we would actually be overwriting the action taken when the event was raised and would manually handle the closing of the widget as well as whatever else we wanted it to do.
This would look something like the below:
from tkinter import *
root = Tk()
button = Button(root, text="Ok", state="disabled")
button.pack()
top = Toplevel(root)
def close():
top.destroy()
button.configure(state="active")
top.protocol("WM_DELETE_WINDOW", close)
root.mainloop()
If you close the Toplevel widget you will see that the button is now active instead. This would equally work if we added a Button to the Toplevel widget which called the function close().