From uvizhe at yandex.ru  Sat Aug  8 16:59:16 2015
From: uvizhe at yandex.ru (Alexander Uvizhev)
Date: Sat, 08 Aug 2015 17:59:16 +0300
Subject: [Tkinter-discuss] Text widget incorrect 'displaylines' count
Message-ID: <4821251439045956@web1g.yandex.ru>


Hi,
Recently I came across some strangeness in tkinter Text widget. I bind <Configure> event to it and the first time I insert text into widget the callback is called and reports wrong 'displaylines' count.
Here is the code:
===
$ cat test_text.py
import tkinter


def check(event):
    lines = event.widget.count('1.0', 'end', 'displaylines')
    print(lines)

root = tkinter.Tk()
master = tkinter.Frame(master=root)
master.grid()
text = tkinter.Text(master=master, height=1)
text.bind('<Configure>', check)
text.grid()
text.insert('1.0', "1234567890")  # first time insert
text.insert('1.0', "1234567890")  # second
text.unbind('<Configure>')
master.mainloop()
===
Output:
$ python3 test_text.py 
(10,)

Is it what's supposed to be or some sort of bug?

-- 
Alexander Uvizhev
uvizhe at yandex.ru

From klappnase at web.de  Sun Aug  9 01:19:11 2015
From: klappnase at web.de (Michael Lange)
Date: Sun, 9 Aug 2015 01:19:11 +0200
Subject: [Tkinter-discuss] Text widget incorrect 'displaylines' count
In-Reply-To: <4821251439045956@web1g.yandex.ru>
References: <4821251439045956@web1g.yandex.ru>
Message-ID: <20150809011911.5c13448849c6a5f582fd2c4e@web.de>

Hi,

On Sat, 08 Aug 2015 17:59:16 +0300
Alexander Uvizhev <uvizhe at yandex.ru> wrote:

> 
> Hi,
> Recently I came across some strangeness in tkinter Text widget. I bind
> <Configure> event to it and the first time I insert text into widget
> the callback is called and reports wrong 'displaylines' count. Here is
(...)
> 
> Is it what's supposed to be or some sort of bug?

I guess something like this happens:

* the text widget is created, but initially, before it is actually drawn
onto screen, has virtually a size of  1*1 px 
* because of this the inserted 10-character text string is wrappped into
10 lines
* this is when the first <Configure> event is triggered and so it
in fact correctly reports 10 lines
* subsequent calls to insert() do not trigger a <Configure> event
* the next >cConfigure> event is triggered when the window is actually
drawn after mainloop() is called, however in your example then the
binding was already removed

I modified your example a little to illustrate what I mean, without the
unbind(); you can see then that after the window is visible the reported
lines are as expected:

###############################
import tkinter

def check(event):
    print(event.widget.winfo_width(), event.widget.winfo_height())
    print(event.widget.count('1.0', 'end', 'displaylines'))
    print()

root = tkinter.Tk()
master = tkinter.Frame(master=root)
master.pack(fill='both', expand=1)
text = tkinter.Text(master=master)
text.bind('<Configure>', check)
text.pack(fill='both', expand=1)
text.insert('1.0', "1234567890")  # first time insert
text.insert('1.0', "1234567890")  # second
master.mainloop()
##############################

Best regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

A star captain's most solemn oath is that he will give his life, even
his entire crew, rather than violate the Prime Directive.
		-- Kirk, "The Omega Glory", stardate unknown

From pawel at mosakowski.net  Tue Aug 18 00:13:22 2015
From: pawel at mosakowski.net (Pawel Mosakowski)
Date: Mon, 17 Aug 2015 23:13:22 +0100
Subject: [Tkinter-discuss] new ttk theme made with theme_create() doesn't
	inherit from parent
Message-ID: <20150817231322.3f293064@lenny>

Hi,

When I create a new theme and set it to inherit from already existing
one, the new theme comes up empty. It has no elements and buttons
displayed with it show only label, no other layout components.

I have no idea if it's normal behaviour or something is wrong with my
setup. Maybe I'm just using it wrong. I'm running Python 3.4.3 with tk
8.6.4 on Arch Linux.

===============================================
Test program
===============================================
import tkinter as tk
import tkinter.ttk as ttk

style = ttk.Style()

print('Available themes: ', style.theme_names())

print('\nSetting theme to default')
style.theme_use('default')

print('\nDisplaying theme "{0}" elements'.format(style.theme_use()))
print(style.element_names())

print('\nCreating new theme')
style.theme_create('new_theme', parent='default')

print('\nAvailable themes: ', style.theme_names())

print('\nSetting theme to new_theme')
style.theme_use('new_theme')

print('\nDisplaying theme "{0}" elements'.format(style.theme_use()))
print(style.element_names())

=================================================
Output
=================================================
Available themes:  ('clam', 'alt', 'default', 'classic')

Setting theme to default

Displaying theme "default" elements
('label', '', 'focus', 'treearea', 'separator', 'image', 'arrow',
'downarrow', 'Menubutton.indicator', 'Treeitem.row', 'vsash', 'text',
'sizegrip', 'indicator', 'Treeheading.cell', 'leftarrow', 'border',
'Radiobutton.indicator', 'hsash', 'vseparator', 'fill', 'thumb',
'background', 'uparrow', 'hseparator', 'trough', 'rightarrow',
'Treeitem.indicator', 'slider', 'field', 'pbar',
'Checkbutton.indicator', 'textarea', 'client', 'tab', 'padding')

Creating new theme

Available themes:  ('new_theme', 'clam', 'alt', 'default', 'classic')

Setting theme to new_theme

Displaying theme "new_theme" elements
()
===================================================
Output end
===================================================

Thanks in advance,
Pawel Mosakowski

From lac at openend.se  Sat Aug 22 13:03:46 2015
From: lac at openend.se (Laura Creighton)
Date: Sat, 22 Aug 2015 13:03:46 +0200
Subject: [Tkinter-discuss] tkinter file dialog pattern matching
Message-ID: <201508221103.t7MB3kdx010426@fido.openend.se>

Somebody on the tutor mailing list wants to match
"all files and direcories in this directory that do not start
with a ."

The filetypes option seems only to want patterns to match, not
patterns to exclude.  Is my pattern matching magic just off, or
is there no way to exclude things in a tkFileDialog?

puzzled,
Laura

From pawel at mosakowski.net  Sat Aug 22 22:04:24 2015
From: pawel at mosakowski.net (Pawel Mosakowski)
Date: Sat, 22 Aug 2015 21:04:24 +0100
Subject: [Tkinter-discuss] tkinter file dialog pattern matching
In-Reply-To: <201508221103.t7MB3kdx010426@fido.openend.se>
References: <201508221103.t7MB3kdx010426@fido.openend.se>
Message-ID: <20150822210424.321b826f@lenny>

Hi,

I've found this little gem in the Tk docs
https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13
From what I see "file patterns" in the file dialog are not "regex
patterns" and do not support special characters. Only things that work
are:
1) * - any extension
2) "" - files without extension
3) literal extension without wildcard chars
Unfortunately it looks like there is no simple way to filter out hidden
files.
Check out this answer
https://mail.python.org/pipermail//tutor/2011-November/086483.html

Regards,
Pawel Mosakowski

On Sat, 22 Aug 2015 13:03:46 +0200
Laura Creighton <lac at openend.se> wrote:

> Somebody on the tutor mailing list wants to match
> "all files and direcories in this directory that do not start
> with a ."
> 
> The filetypes option seems only to want patterns to match, not
> patterns to exclude.  Is my pattern matching magic just off, or
> is there no way to exclude things in a tkFileDialog?
> 
> puzzled,
> Laura
> _______________________________________________
> Tkinter-discuss mailing list
> Tkinter-discuss at python.org
> https://mail.python.org/mailman/listinfo/tkinter-discuss


From lac at openend.se  Sat Aug 22 22:17:11 2015
From: lac at openend.se (Laura Creighton)
Date: Sat, 22 Aug 2015 22:17:11 +0200
Subject: [Tkinter-discuss] tkinter file dialog pattern matching
In-Reply-To: <20150822210424.321b826f@lenny>
References: <201508221103.t7MB3kdx010426@fido.openend.se>
 <20150822210424.321b826f@lenny>
Message-ID: <201508222017.t7MKHBac022500@fido.openend.se>

In a message of Sat, 22 Aug 2015 21:04:24 +0100, Pawel Mosakowski writes:
>Hi,
>
>I've found this little gem in the Tk docs
>https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13
>>From what I see "file patterns" in the file dialog are not "regex
>patterns" and do not support special characters. Only things that work
>are:
>1) * - any extension
>2) "" - files without extension
>3) literal extension without wildcard chars
>Unfortunately it looks like there is no simple way to filter out hidden
>files.
>Check out this answer
>https://mail.python.org/pipermail//tutor/2011-November/086483.html
>
>Regards,
>Pawel Mosakowski

Thank you.  Looks like it will be necessary to construct a new
widget.  I'm surprised ...

Laura


From Cameron at phaseit.net  Sun Aug 23 00:51:02 2015
From: Cameron at phaseit.net (Cameron Laird)
Date: Sat, 22 Aug 2015 22:51:02 +0000
Subject: [Tkinter-discuss] tkinter file dialog pattern matching
In-Reply-To: <201508222017.t7MKHBac022500@fido.openend.se>
References: <201508221103.t7MB3kdx010426@fido.openend.se>
 <20150822210424.321b826f@lenny> <201508222017.t7MKHBac022500@fido.openend.se>
Message-ID: <20150822225102.GA12242@lairds.us>

On Sat, Aug 22, 2015 at 10:17:11PM +0200, Laura Creighton wrote:
> In a message of Sat, 22 Aug 2015 21:04:24 +0100, Pawel Mosakowski writes:
> >Hi,
> >
> >I've found this little gem in the Tk docs
> >https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13
> >>From what I see "file patterns" in the file dialog are not "regex
> >patterns" and do not support special characters. Only things that work
> >are:
> >1) * - any extension
> >2) "" - files without extension
> >3) literal extension without wildcard chars
> >Unfortunately it looks like there is no simple way to filter out hidden
> >files.
> >Check out this answer
> >https://mail.python.org/pipermail//tutor/2011-November/086483.html
> >
> >Regards,
> >Pawel Mosakowski
> 
> Thank you.  Looks like it will be necessary to construct a new
> widget.  I'm surprised ...
			.
			.
			.
More than I.  I can understand your disappointment that 
file-dialogue "file patterns" have such a rudimentary
syntax; I speculate with considerable confidence that
the authors acted with sh as the model most in their
mind.  You're quite right, Laura, that the elements are
at hand to allow you to construct your own variant.  If
the history of getOpenFile truly interests you, act 
quickly:  while we can get to the authors now, it won't
be many cycles more before their memories and records
senesce irretrievably.

From klappnase at web.de  Sun Aug 23 12:40:02 2015
From: klappnase at web.de (Michael Lange)
Date: Sun, 23 Aug 2015 12:40:02 +0200
Subject: [Tkinter-discuss] tkinter file dialog pattern matching
In-Reply-To: <20150822210424.321b826f@lenny>
References: <201508221103.t7MB3kdx010426@fido.openend.se>
 <20150822210424.321b826f@lenny>
Message-ID: <20150823124002.7391f37e21f9b5cfaa91770f@web.de>

Hi,

On Sat, 22 Aug 2015 21:04:24 +0100
Pawel Mosakowski <pawel at mosakowski.net> wrote:

> Hi,
> 
> I've found this little gem in the Tk docs
> https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13
> From what I see "file patterns" in the file dialog are not "regex
> patterns" and do not support special characters. Only things that work
> are:
> 1) * - any extension
> 2) "" - files without extension
> 3) literal extension without wildcard chars
> Unfortunately it looks like there is no simple way to filter out hidden
> files.

actually the unix tk file dialog has an an (however undocumented) feature
to hide hidden elements and display even a button that allows to toggle
between hidden elements on/off, however we need to do a little tcl to get
to this. Since the feature is not documented anywhere it might also be a
good idea to wrap this into a try...except. See this little code snippet:

#############################################
from Tkinter import *
import tkFileDialog as tkfd

root = Tk()

try:
    # call a dummy dialog with an impossible option to initialize the file
    # dialog without really getting a dialog window; this will throw a
    # TclError, so we need a try...except :
    try:
        root.tk.call('tk_getOpenFile', '-foobarbaz')
    except TclError:
        pass
    # now set the magic variables accordingly
    root.tk.call('set', '::tk::dialog::file::showHiddenBtn', '1')
    root.tk.call('set', '::tk::dialog::file::showHiddenVar', '0')
except:
    pass

# a simple callback for testing:
def openfile(event):
    fname = tkfd.askopenfilename()
    print(fname)
root.bind('<Control-o>', openfile)

root.mainloop()
#############################################

Best regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

This cultural mystique surrounding the biological function -- you
realize humans are overly preoccupied with the subject.
		-- Kelinda the Kelvan, "By Any Other Name", stardate
4658.9

From klappnase at web.de  Sun Aug 23 13:11:00 2015
From: klappnase at web.de (Michael Lange)
Date: Sun, 23 Aug 2015 13:11:00 +0200
Subject: [Tkinter-discuss] tkinter file dialog pattern matching
In-Reply-To: <201508222017.t7MKHBac022500@fido.openend.se>
References: <201508221103.t7MB3kdx010426@fido.openend.se>
 <20150822210424.321b826f@lenny>
 <201508222017.t7MKHBac022500@fido.openend.se>
Message-ID: <20150823131100.39d726533290e9d307e0a31e@web.de>

Hi,

On Sat, 22 Aug 2015 22:17:11 +0200
Laura Creighton <lac at openend.se> wrote:

> In a message of Sat, 22 Aug 2015 21:04:24 +0100, Pawel Mosakowski
> writes:
> >Hi,
> >
> >I've found this little gem in the Tk docs
> >https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13
> >>From what I see "file patterns" in the file dialog are not "regex
> >patterns" and do not support special characters. Only things that work
> >are:
> >1) * - any extension
> >2) "" - files without extension
> >3) literal extension without wildcard chars
> >Unfortunately it looks like there is no simple way to filter out hidden
> >files.

if you only need to hide hidden files, please see my other post. If you
need a more versatile file dialog widget, you might want to consider
wrapping an existing tcl widget for tkinter, this is usually rather easy
once you understand how it is done (all you need is mostly the man page
and a little time) and might save you a lot of headaches.
One example that might be interisting is here:

http://chiselapp.com/user/schelte/repository/fsdialog/index

You might also want to try the Tix.ExFileSelectDialog, it is rather
dated, but actually has a switch to toggle hidden files on/off and
wildcard filtering capabilities. Unfortunately here with debian jessie I
can only test it with Tcl, with python for some reason I get a
segfault :-(

Best regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

I realize that command does have its fascination, even under
circumstances such as these, but I neither enjoy the idea of command
nor am I frightened of it.  It simply exists, and I will do whatever
logically needs to be done.
		-- Spock, "The Galileo Seven", stardate 2812.7

From lac at openend.se  Sun Aug 23 15:52:59 2015
From: lac at openend.se (Laura Creighton)
Date: Sun, 23 Aug 2015 15:52:59 +0200
Subject: [Tkinter-discuss] tkinter file dialog pattern matching (fwd)
Message-ID: <201508231352.t7NDqxVk005849@fido.openend.se>

oooh.  Seems that there is an undocumented feature we can use!

Laura

------- Forwarded Message

Return-Path: <tkinter-discuss-bounces+lac=openend.se at python.org>
Date: Sun, 23 Aug 2015 12:40:02 +0200
From: Michael Lange <klappnase at web.de>
To: tkinter-discuss at python.org
Message-Id: <20150823124002.7391f37e21f9b5cfaa91770f at web.de>
In-Reply-To: <20150822210424.321b826f at lenny>
References: <201508221103.t7MB3kdx010426 at fido.openend.se>

Hi,

On Sat, 22 Aug 2015 21:04:24 +0100
Pawel Mosakowski <pawel at mosakowski.net> wrote:

> Hi,
> 
> I've found this little gem in the Tk docs
> https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13
> From what I see "file patterns" in the file dialog are not "regex
> patterns" and do not support special characters. Only things that work
> are:
> 1) * - any extension
> 2) "" - files without extension
> 3) literal extension without wildcard chars
> Unfortunately it looks like there is no simple way to filter out hidden
> files.

actually the unix tk file dialog has an an (however undocumented) feature
to hide hidden elements and display even a button that allows to toggle
between hidden elements on/off, however we need to do a little tcl to get
to this. Since the feature is not documented anywhere it might also be a
good idea to wrap this into a try...except. See this little code snippet:

#############################################
from Tkinter import *
import tkFileDialog as tkfd

root = Tk()

try:
    # call a dummy dialog with an impossible option to initialize the file
    # dialog without really getting a dialog window; this will throw a
    # TclError, so we need a try...except :
    try:
        root.tk.call('tk_getOpenFile', '-foobarbaz')
    except TclError:
        pass
    # now set the magic variables accordingly
    root.tk.call('set', '::tk::dialog::file::showHiddenBtn', '1')
    root.tk.call('set', '::tk::dialog::file::showHiddenVar', '0')
except:
    pass

# a simple callback for testing:
def openfile(event):
    fname = tkfd.askopenfilename()
    print(fname)
root.bind('<Control-o>', openfile)

root.mainloop()
#############################################

Best regards

Michael

_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss

------- End of Forwarded Message

From lac at openend.se  Sun Aug 23 15:54:32 2015
From: lac at openend.se (Laura Creighton)
Date: Sun, 23 Aug 2015 15:54:32 +0200
Subject: [Tkinter-discuss] tkinter file dialog pattern matching
In-Reply-To: <20150823124002.7391f37e21f9b5cfaa91770f@web.de>
References: <201508221103.t7MB3kdx010426@fido.openend.se>
 <20150822210424.321b826f@lenny>
 <20150823124002.7391f37e21f9b5cfaa91770f@web.de>
Message-ID: <201508231354.t7NDsWBF006200@fido.openend.se>

Thank you very much. :)

Laura


From daniel.graham at duke.edu  Sun Aug 23 15:11:03 2015
From: daniel.graham at duke.edu (Daniel Graham, Ph.D.)
Date: Sun, 23 Aug 2015 13:11:03 +0000
Subject: [Tkinter-discuss] Tkinter-discuss Digest, Vol 136, Issue 3
In-Reply-To: <mailman.45.1440324003.15121.tkinter-discuss@python.org>
References: <mailman.45.1440324003.15121.tkinter-discuss@python.org>
Message-ID: <3F067C7B-F3EE-47C3-B280-446B68E9E38C@duke.edu>

I use fnmatch:

    for path, dirs, files in os.walk(root):
        # exclude dirs
        dirs[:] = [os.path.join(path, d) for d in dirs
                   if not fnmatch.fnmatch(d, exclude)]
        # exclude files
        files = [os.path.join(path, f) for f in files
                 if not fnmatch.fnmatch(f, exclude)]

where

    exclude=r?.*?

-Dan

On Aug 23, 2015, at 6:00 AM, tkinter-discuss-request at python.org<mailto:tkinter-discuss-request at python.org> wrote:

Send Tkinter-discuss mailing list submissions to
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Today's Topics:

  1. tkinter file dialog pattern matching (Laura Creighton)
  2. Re: tkinter file dialog pattern matching (Pawel Mosakowski)
  3. Re: tkinter file dialog pattern matching (Laura Creighton)
  4. Re: tkinter file dialog pattern matching (Cameron Laird)


----------------------------------------------------------------------

Message: 1
Date: Sat, 22 Aug 2015 13:03:46 +0200
From: Laura Creighton <lac at openend.se>
To: tkinter-discuss at python.org
Subject: [Tkinter-discuss] tkinter file dialog pattern matching
Message-ID: <201508221103.t7MB3kdx010426 at fido.openend.se>
Content-Type: text/plain; charset="us-ascii"

Somebody on the tutor mailing list wants to match
"all files and direcories in this directory that do not start
with a ."

The filetypes option seems only to want patterns to match, not
patterns to exclude.  Is my pattern matching magic just off, or
is there no way to exclude things in a tkFileDialog?

puzzled,
Laura


------------------------------

Message: 2
Date: Sat, 22 Aug 2015 21:04:24 +0100
From: Pawel Mosakowski <pawel at mosakowski.net>
To: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] tkinter file dialog pattern matching
Message-ID: <20150822210424.321b826f at lenny>
Content-Type: text/plain; charset=US-ASCII

Hi,

I've found this little gem in the Tk docs
https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13
From what I see "file patterns" in the file dialog are not "regex
patterns" and do not support special characters. Only things that work
are:
1) * - any extension
2) "" - files without extension
3) literal extension without wildcard chars
Unfortunately it looks like there is no simple way to filter out hidden
files.
Check out this answer
https://mail.python.org/pipermail//tutor/2011-November/086483.html

Regards,
Pawel Mosakowski

On Sat, 22 Aug 2015 13:03:46 +0200
Laura Creighton <lac at openend.se> wrote:

Somebody on the tutor mailing list wants to match
"all files and direcories in this directory that do not start
with a ."

The filetypes option seems only to want patterns to match, not
patterns to exclude.  Is my pattern matching magic just off, or
is there no way to exclude things in a tkFileDialog?

puzzled,
Laura
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss



------------------------------

Message: 3
Date: Sat, 22 Aug 2015 22:17:11 +0200
From: Laura Creighton <lac at openend.se>
To: Pawel Mosakowski <pawel at mosakowski.net>
Cc: tkinter-discuss at python.org, lac at openend.se
Subject: Re: [Tkinter-discuss] tkinter file dialog pattern matching
Message-ID: <201508222017.t7MKHBac022500 at fido.openend.se>
Content-Type: text/plain; charset="us-ascii"

In a message of Sat, 22 Aug 2015 21:04:24 +0100, Pawel Mosakowski writes:
Hi,

I've found this little gem in the Tk docs
https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13
From what I see "file patterns" in the file dialog are not "regex
patterns" and do not support special characters. Only things that work
are:
1) * - any extension
2) "" - files without extension
3) literal extension without wildcard chars
Unfortunately it looks like there is no simple way to filter out hidden
files.
Check out this answer
https://mail.python.org/pipermail//tutor/2011-November/086483.html

Regards,
Pawel Mosakowski

Thank you.  Looks like it will be necessary to construct a new
widget.  I'm surprised ...

Laura



------------------------------

Message: 4
Date: Sat, 22 Aug 2015 22:51:02 +0000
From: Cameron Laird <Cameron at phaseit.net>
To: Laura Creighton <lac at openend.se>
Cc: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] tkinter file dialog pattern matching
Message-ID: <20150822225102.GA12242 at lairds.us>
Content-Type: text/plain; charset=us-ascii

On Sat, Aug 22, 2015 at 10:17:11PM +0200, Laura Creighton wrote:
In a message of Sat, 22 Aug 2015 21:04:24 +0100, Pawel Mosakowski writes:
Hi,

I've found this little gem in the Tk docs
https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13
From what I see "file patterns" in the file dialog are not "regex
patterns" and do not support special characters. Only things that work
are:
1) * - any extension
2) "" - files without extension
3) literal extension without wildcard chars
Unfortunately it looks like there is no simple way to filter out hidden
files.
Check out this answer
https://mail.python.org/pipermail//tutor/2011-November/086483.html

Regards,
Pawel Mosakowski

Thank you.  Looks like it will be necessary to construct a new
widget.  I'm surprised ...
.
.
.
More than I.  I can understand your disappointment that
file-dialogue "file patterns" have such a rudimentary
syntax; I speculate with considerable confidence that
the authors acted with sh as the model most in their
mind.  You're quite right, Laura, that the elements are
at hand to allow you to construct your own variant.  If
the history of getOpenFile truly interests you, act
quickly:  while we can get to the authors now, it won't
be many cycles more before their memories and records
senesce irretrievably.


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From chris_roysmith at internode.on.net  Mon Aug 24 02:43:19 2015
From: chris_roysmith at internode.on.net (Chris Roy-Smith)
Date: Mon, 24 Aug 2015 10:43:19 +1000
Subject: [Tkinter-discuss] tkinter file dialog pattern matching (fwd)
In-Reply-To: <201508231352.t7NDqxVk005849@fido.openend.se>
References: <201508231352.t7NDqxVk005849@fido.openend.se>
Message-ID: <55DA68A7.2060004@internode.on.net>

On 23/08/15 23:52, Laura Creighton wrote:
> oooh.  Seems that there is an undocumented feature we can use!
>
> Laura
>
> ------- Forwarded Message
>
> Return-Path: <tkinter-discuss-bounces+lac=openend.se at python.org>
> Date: Sun, 23 Aug 2015 12:40:02 +0200
> From: Michael Lange <klappnase at web.de>
> To: tkinter-discuss at python.org
> Message-Id: <20150823124002.7391f37e21f9b5cfaa91770f at web.de>
> In-Reply-To: <20150822210424.321b826f at lenny>
> References: <201508221103.t7MB3kdx010426 at fido.openend.se>
>
> Hi,
>
> On Sat, 22 Aug 2015 21:04:24 +0100
> Pawel Mosakowski <pawel at mosakowski.net> wrote:
>
>> Hi,
>>
>> I've found this little gem in the Tk docs
>> https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13
>>  From what I see "file patterns" in the file dialog are not "regex
>> patterns" and do not support special characters. Only things that work
>> are:
>> 1) * - any extension
>> 2) "" - files without extension
>> 3) literal extension without wildcard chars
>> Unfortunately it looks like there is no simple way to filter out hidden
>> files.
>
> actually the unix tk file dialog has an an (however undocumented) feature
> to hide hidden elements and display even a button that allows to toggle
> between hidden elements on/off, however we need to do a little tcl to get
> to this. Since the feature is not documented anywhere it might also be a
> good idea to wrap this into a try...except. See this little code snippet:
>
> #############################################
> from Tkinter import *
> import tkFileDialog as tkfd
>
> root = Tk()
>
> try:
>      # call a dummy dialog with an impossible option to initialize the file
>      # dialog without really getting a dialog window; this will throw a
>      # TclError, so we need a try...except :
>      try:
>          root.tk.call('tk_getOpenFile', '-foobarbaz')
>      except TclError:
>          pass
>      # now set the magic variables accordingly
>      root.tk.call('set', '::tk::dialog::file::showHiddenBtn', '1')
>      root.tk.call('set', '::tk::dialog::file::showHiddenVar', '0')
> except:
>      pass
>
> # a simple callback for testing:
> def openfile(event):
>      fname = tkfd.askopenfilename()
>      print(fname)
> root.bind('<Control-o>', openfile)
>
> root.mainloop()
> #############################################
>
> Best regards
>
> Michael
>
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> Tkinter-discuss at python.org
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>
> ------- End of Forwarded Message
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>
Thanks Laura,
That does exactly what I wanted to do.