CODEWITHSUNDEEP
pythontkinter
PucciLaCanton
PucciLaCanton

Reputation: 83

How to delete first character of tkinter text widget

Hi I am struggling with tkinter. I simply want to delete the first character of a text widget, for example on button click. I have seen [Bryan Oakleys answer here][1] but unfortunately it does not work for me. Like he said I tried it like this:

text.delete("1.0")

But like I said it does not work. I also do not get any error. It simply does not work.

from tkinter import *
import time


class TipManager:
    def __init__(self):
        self.root = Tk()
        self.root.attributes("-fullscreen", True)
        self.root.bind("<KeyPress>", self.click)
        self.clicks = 0
        self.chars = []
        self.cps = 0
        self.start = time.time()
        self.average()
        self.text = Text(self.root,tabs=2,font=("Arial", 30))
        self.text.grid(row=0, column=0)
        self.root.mainloop()




    def click(self,e):
        if e.char.isalpha() or e.char == " ":
            self.chars.append(e.char)
            self.clicks += 1
            if len(self.chars) > 15:
                self.text.delete("1.0")
            self.text.configure(state="normal")
            self.text.insert(END, e.char)
            self.text.configure(state="disabled")


        if e.char == "\x7f":
            if not len(self.chars) == 0:
                self.text.configure(state="normal")
                self.text.delete("end-2c")
                self.text.configure(state="disabled")
                del self.chars[-1]

    def average(self):
        self.cps = self.clicks
        print(f"Your average typing speed was {self.cps} c/s")
        self.clicks = 0
        self.root.after(1000, self.average)




tipp_10 = TipManager()

This is my full code [1]: https://stackoverflow.com/questions/49232866/how-to-delete-last-character-in-text-widget-tkinter#:~:text=The%20index%20END%20represents%20the,(end%20minus%20two%20characters).

Upvotes: 0

Views: 300

Answers (2)

Tkinter Lover
Tkinter Lover

Reputation: 855

Be sure your text box is enabled before you insert/delete from it. So put self.text.configure(state="normal") before this line:

if len(self.chars) > 15:
self.text.delete("1.0")

Upvotes: 0

TheLizzard
TheLizzard

Reputation: 7680

Change:

if len(self.chars) > 15:
    self.text.delete("1.0")
self.text.configure(state="normal")
self.text.insert(END, e.char)
self.text.configure(state="disabled")

to:

self.text.configure(state="normal")
if len(self.chars) > 15:
    self.text.delete("1.0")
self.text.insert(END, e.char)
self.text.configure(state="disabled")

The <tkinter.Text>'s state must be "normal" when you .insert/.delete from it.

Upvotes: 2

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