Running Ubuntu 18.04, Python 3.6.7, tkinter 8.6
I am very new to tkinter. The simple program I am writing requires a
user file to be selected before it does anything else, so I would like
a file selection dialog in the main window as soon as the program
launches.
Tkinter only has askopenfilename(), but this produces a popup dialog.
I can get something like what I want by specifying a small Tk() window
and then calling askopenfilename() so that it covers the root window.
It's not ideal, though. From the documentation I thought that the tix
FileSelectBox would do what I wanted, but I just can't get it to work.
If I run:
from tkinter import *
from tkinter.tix import FileSelectBox
root = Tk()
f = FileSelectBox(root)
I get the following:
Traceback (most recent call last):
File "/home/david/bin/Gradient.py", line 4, in <module>
f = FileSelectBox(root)
File "/usr/lib/python3.6/tkinter/tix.py", line 795, in __init__
TixWidget.__init__(self, master, 'tixFileSelectBox', ['options'], cnf,
kw)
File "/usr/lib/python3.6/tkinter/tix.py", line 311, in __init__
self.tk.call(widgetName, self._w, *extra)
_tkinter.TclError: invalid command name "tixFileSelectBox"
I realize that assigning the value of FileSelectBox() isn't going to
give me a filename: I'm just trying to get the basic syntax right at
the moment.
I can't figure out what is wrong though. Have I have misunderstood how
it should be called, or is there something missing from my system?
David
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