I think that modifying gnupg_remove is a bit risky because it's used in many places.
I'd rather introduce new function for Windows; gnupg_w32_delete_file for this particular purpose.
Factoring out wait_when_sharing_violation function from gnupg_rename_file.

(writing this much later, since got lost)

I had a look at Qt 5. All of Qt's Windows styles are broken with regards to button or menu item styling. They change the background color of the hovered and/or selected button, but they use the default foreground color of the common base style class for the text. I don't think that fixing the (obsolete) Windows styles is worth the effort. As workaround we should use the Fusion style if high-contrast is active.

As this was finished more than a year ago, this should be included (and testable) in vsd

It was decided that we don't want to improve this in KConfig.

Tested a little late and on Windows 11 with VS-Desktop-3.3.90.16-Beta (a Beta for VSD 3.3.3):

The gnupg_remove should retry if it has a sharing violation. Similar to what we do in gnupg_rename_file. I just figured that we do a remove in the latter function too w/o handling a sharing violation.

Here is a possible fix:

Fixed and backported for VSD 3.4 and VSD 3.3.

That is a real interesting description for the commit :-(

This is current work of mine: