Hi,
On Thu, 8 Dec 2016 11:00:50 -0700
"Alan L Dickman" <adick...@us.ibm.com> wrote:
> Thanks in advance for any help! I'm just learning Python and Tkinter.
> Can anyone suggest why this program does not insert 'some text' into
> text box t1 when the start button is clicked? No errors are thrown when
> I run the program in PyCharm
>
> from tkinter import *
>
> class Window(Frame):
> t1 = []
> def __init__(self, master=None)
> Frame.__init__(self, master)
> self.master = master
> self.master.title("My Title")
> StartButton = Button(self, text="Start", command=self.start, bg=
> '#006ba6', fg="white")
> StartButton.grid(row=0, columnspan=3, sticky=(N, S, W, E))
> Label(self, text="Your Name").grid(row=1, sticky=(N, S, W, E))
> t1 = Text(self, height=2)
> t1.grid(row=1, column=1, sticky=(N, S, W, E))
> self.t1.insert( 0, 'some text')
> quitButton = Button(self, text="Quit",
> command=self.client_quit, bg='#006ba6', fg="white")
> quitButton.grid(row=5, columnspan=3, sticky=(N, S, W, E))
> self.grid(sticky=(N, S, W, E))
>
> def start(self):
> self.t1.insert(0, 'some text')
(...)
there are various problems here:
You do self.t1.insert( 0, 'some text') , your text widget however is
"t1", self.t1 is an empty list, so your list after the button press will
look like ['some text', 'some text'] .
Next, if you try to insert a string into a text widget, you need to
specify the index with a construct like "line.character", so if you want
to insert something at the start of the first line, use 1.0 instead of 0,
otherwise a TclError will be thrown, as in:
>>> text.insert(0, 'foo')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "Tkinter.py", line 3236, in insert
self.tk.call((self._w, 'insert', index, chars) + args)
_tkinter.TclError: bad text index "0"
Best regards
Michael
.-.. .. ...- . .-.. --- -. --. .- -. -.. .--. .-. --- ... .--. . .-.
Immortality consists largely of boredom.
-- Zefrem Cochrane, "Metamorphosis", stardate 3219.8
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