On 28/06/2016 18:45, Pete Forman wrote:
John Sampson <jrs....@ntlworld.com> writes:

I am using win32clipboard module with Python 2.7 in Windows 7. I have
code which uses GetClipboardData() and SetClipboardText(argument).
Before running the code I copy text into the Windows clipboard from a
proprietary program. I know that this program adds garbage to the end
of the string, namely null-value bytes and possibly other invisible
stuff.

When I paste the contents of the Windows clipboard into a Tkinter text
box I get the string obtained by GetClipboardData() although I have
since run SetClipboardText(argument).

If I paste the contents of the Windows clipboard at this stage into
the Boxer text editor I get the string placed by
SetClipboardText(argument). If I paste into the Tkinter program again,
or into Vim or into Microsoft Word, I get the string obtained using
GetClipboardData(). I can repeat this as many times as I like - one
string into Boxer, the other string into the other programs.

I deduce that both strings must be in the clipboard at the same time,
but it depends which program has focus which string is pasted in using
Control v.

Is there a way of showing the contents of the clipboard, garbage and
all? I would like to find a way of making the Windows clipboard behave
as it is supposed to - new contents overwriting the old.
I don't have access to a Windows PC at the moment but here are a couple
of scripts I wrote 9 years ago to play with the clipboard.

Bear in mind that the clipboard is not just text. It is written to in a
number of formats and is designed that the reader pull off the best,
whatever that might be.

There are a number of clipboard viewer or manager applications available
on Windows. Something to watch out for is that clipboard behaviour may
be affected by adding viewers.

[clip]

Many thanks. What has fixed it for a newbie like me was to empty the clipboard explicitly with EmptyClipboard() before running SetClipboardText(argument). I did not appreciate that programs draw off their selection from the clipboard when pasting.
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