On 2019-05-01 17:44, David Sumbler wrote:
>
> On Tue, 2019-04-30 at 20:46 +0100, MRAB wrote:
> > On 2019-04-30 16:40, David Sumbler wrote:
> > > 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?
> > >
> >
> > For some reason, tix widgets don't work with normal tkinter widgets,
> > so
> > you can't put a tix FileSelectBox on a tkinter.Tk widget.
> >
> > There is, however, a tix.Tk widget that you can use instead:
> >
> > import tkinter.tix as tix
> > root = tix.Tk()
> > f = tix.FileSelectBox(root)
> > f.pack()
>
> Thanks for that.
>
> When I ran the above, I got:
>
> Traceback (most recent call last):
> File "/home/david/bin/GradientProfile_v2.py", line 2, in <module>
> root = tix.Tk()
> File "/usr/lib/python3.6/tkinter/tix.py", line 214, in __init__
> self.tk.eval('package require Tix')
> _tkinter.TclError: can't find package Tix
>
> After an internet search, I tried:
>
> sudo apt install tix-dev tk-dev tk8.6-dev libxft-dev
libfontconfig1-dev libfreetype6-dev libpng-dev
>
> Now when I run the file the program just exits quickly, with no
> reported errors, but no window(s). If I add 'root.mainloop()' at the
> end, I get an empty root window for a fraction of a second, then the
> program exits with:
>
> Segmentation fault (core dumped)
>
> Any suggestions as to where to go from here?
>
Tested on Raspbian in a terminal window:
sudo apt-get install tix
python3
import tkinter.tix as tix
root = tix.Tk()
f = tix.FileSelectBox(root)
f.pack()
At this point there's a GUi window filled with a file section box.
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