Closing Mudlet clears the clipboard

[dt192]

Brief summary of issue / Description of requested feature:

Closing Mudlet clears the clipboard

Steps to reproduce the issue / Reasons for adding feature:

1. Copy anything to the clipboard
2. Close Mudlet
3. Try to paste text

https://github.com/Mudlet/Mudlet/assets/2612048/92149af3-41ed-4711-9878-e74201c0880f

[demonnic]

A bit more specifically, I can reproduce this only when trying to copy the text from Mudlet itself, if the text in the clipboard came from another source it is not cleared.

[dt192]

Tested the above and that's accurate for me too on Win10

[vadi2]

Do you get the same behaviour with other applications on Windows when trying to copy similar things?

[demonnic]

does not occur for me in notepad, wordpad, or windows explorer that way no.

[SlySven]

This probably needs checking with another Qt framework using application as it sounds like the data is not making it to the "system" clipboard when the "Copy" action is invoked - so perhaps it is being held internally in either a Mudlet or a Qt library memory area - which will not persist beyond the end of the application - and if it is a Qt thing then we can't do much about it...

Also, given that you seem to be talking about Widows applications - how do other OS's behave?

[vadi2]

I suspect Qt is doing a 'just in time' copy, that is - data isn't actually copied until you need to paste it elsewhere. This would explain why pasting after the app is closed didn't work.

[dt192]

Maybe try this, more info ON WINDOWS,the resolution is to call OleFlushClipboard() before closing the application.

[vadi2]

That looks right, however what is strange is that Qt already does this: https://code.qt.io/cgit/qt/qtbase.git/tree/src/widgets/platforms/win/qclipboard_win.cpp?id=82895982ec31b2c889393e7f386c25d668df6c5e&h=5.14#n312

Nonetheless a PR to test this is welcome.

[dt192]

Sounds good. Won't be from me though, as I don't c++.

[SlySven]

Also, does this happen on other OSes?

[KitchenMUD]

Happens on macOS too.