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From: Thomas Passin <list1@tompassin.net>
Newsgroups: comp.lang.python
Subject: Re: win32clipboard writing to clipboard on Windows 11
Date: Mon, 17 Jun 2024 22:23:07 -0400
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On 6/17/2024 9:30 PM, MRAB via Python-list wrote:
> On 2024-06-17 20:27, Rob Cliffe via Python-list wrote:
>> Recently I acquired a new laptop running WIndows 11; my previous one
>> uses WIndows 10.  I encountered a strange problem:
>> I am using the win32clipboard backage (part of pywin32), and when I use
>> SetClipboardData() to write text which consists ***entirely of digits***
>> to the clipboard, I either get an error (not always the same error
>> message) or a program crash.  The problem does not appear if I use
>> SetClipboardText() instead.  The problem does not occur on my old
>> machine (where I used the feature extensively).
>>
>> Sample program:
>>
>> from win32clipboard import *
>> OpenClipboard()
>> SetClipboardData(CF_UNICODETEXT, "A")
>> SetClipboardData(CF_UNICODETEXT, "A0")
>> SetClipboardData(CF_UNICODETEXT, "0A")
>> SetClipboardText("0", CF_UNICODETEXT)
>> print("OK so far")
>> SetClipboardData(CF_UNICODETEXT, "0")
>> CloseClipboard()
>>
>> Sample output:
>>
>> OK so far
>> Traceback (most recent call last):
>>     File "C:\TEST*.PY", line 8, in <module>
>>       SetClipboardData(CF_UNICODETEXT, "0")
>> pywintypes.error: (0, 'SetClipboardData', 'No error message is 
>> available')
>>
>> Can anyone shed light on this?
>> Best wishes
>> Rob Cliffe
> 
> I tried it on Windows 10 and got this:
> 
>  >>> from win32clipboard import *
>  >>> OpenClipboard()
>  >>> SetClipboardData(CF_UNICODETEXT, "A")
> 1830508101640
>  >>> CloseClipboard()
>  >>> OpenClipboard()
>  >>> SetClipboardData(CF_UNICODETEXT, "0")
> Traceback (most recent call last):
>    File "<stdin>", line 1, in <module>
> pywintypes.error: (6, 'SetClipboardData', 'The handle is invalid.')
>  >>> CloseClipboard()
> 
> It looks like it's something to memory ownership:
> 
> https://stackoverflow.com/questions/1264137/how-to-copy-string-to-clipboard-in-c
> 
> If you're putting text on the clipboard, why not just use 
> SetClipboardText()? That's what I do.

If you can make a change, and you only need to work with text on the 
clipboard, you could change to use pyperclip.  It also works on Linux, 
if you might care about that in the future.  It's available as a pip 
install. It's easier to use than the win32 approach.