Re: [Tkinter-discuss] clipboard and bytes
On Wed, 28 Feb 2018 20:42:51 +0100
Michael Lange wrote:
(...)
> So at least this primitive seems to work. Maybe you can use this
> technique to achieve what you want.
Or maybe this slightly modified example comes closer to what you are
looking for:
from tkinter import *
root = Tk()
def copy(string):
def cp():
return string
copyfunc = (root.register(cp))
return(copyfunc)
root.clipboard_clear()
root.clipboard_append(copy(b'foobar'), type='foo')
def paste(ev):
clip = root.clipboard_get(type='foo')
res = root.tk.call(clip)
print('->', res, type(res))
root.bind('', paste)
root.mainloop()
Regards
Michael
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Re: [Tkinter-discuss] clipboard and bytes
Hi,
On Wed, 28 Feb 2018 10:59:31 +
Vasilis Vlachoudis wrote:
(...)
> In python3 Pickler requires a byte stream so I replaced all StringIO()
> to BytesIO() and the targets with bytes target1 = b""
> Copying to clipboard work ok (or I believe so)
> Pasting, clipboard_get() returns a str not bytes and the Unpickler
> fails. Also If I try to encode("UTF-8") the clip data also it fails.
according to man clipboard it is possible create custom data types to be
stored in the tk clipboard:
"You can put custom data into the clipboard by using a custom -type
option. This is not necessarily portable, but can be very useful. The
method of passing Tcl scripts this way is effective, but should be mixed
with safe interpreters in production code."
I set up a (rather useless) example how this can be done:
##
from tkinter import *
root = Tk()
def copy(string):
def cp():
return 666
copyfunc = (root.register(cp))
return(copyfunc)
root.clipboard_clear()
root.clipboard_append(copy('foobar'), type='foo')
def paste(ev):
clip = root.clipboard_get(type='foo')
res = root.tk.call(clip)
print('->', res, type(res))
root.bind('', paste)
root.mainloop()
#
When I run this script and hit F1 I get the following output:
$ python3 test5.py
-> 666
So at least this primitive seems to work. Maybe you can use this
technique to achieve what you want.
Regards
Michael
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[Tkinter-discuss] clipboard and bytes
Hi all,
I took the decision to convert my program to python3. I am stuck with the
clipboard handling str vs bytes
How can I get/receive bytes instead of str with the clipboard?
What I was doing up to now was opening a StringIO stream dump a header and the
objects as a dump from Pickler
Up to now in python V2. it was working like this
Copy to clilpboard:
target1 = ""
sio = io.StringIO()
sio.write(target1)
pickler = Pickler(sio)
pickler.dump()
root.clipboard._clear()
root.clipboard_append(sio.getvalue())
Paste from clipboard:
clip = root.clipboard_get(selection='CLIPBOARD')
if clip.startswith(target1):
pickler = Unpickler(io.StringIO(clipboard[len(target1):]))
...
elif...
In python3 Pickler requires a byte stream so I replaced all StringIO() to
BytesIO() and
the targets with bytes target1 = b""
Copying to clipboard work ok (or I believe so)
Pasting, clipboard_get() returns a str not bytes and the Unpickler fails. Also
If I try
to encode("UTF-8") the clip data also it fails.
Thanks in advance
Vasilis
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