On 23/08/15 23:52, Laura Creighton wrote:
oooh. Seems that there is an undocumented feature we can use!
Laura
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Return-Path: <tkinter-discuss-bounces+lac=openend...@python.org>
Date: Sun, 23 Aug 2015 12:40:02 +0200
From: Michael Lange <klappn...@web.de>
To: tkinter-disc...@python.org
Message-Id: <20150823124002.7391f37e21f9b5cfaa917...@web.de>
In-Reply-To: <20150822210424.321b826f@lenny>
References: <201508221103.t7mb3kdx010...@fido.openend.se>
Hi,
On Sat, 22 Aug 2015 21:04:24 +0100
Pawel Mosakowski <pa...@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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Thanks Laura,
That does exactly what I wanted to do.
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