Xpra: Ticket #1589: GTK3 clipboard support

This is going to be fun, not.

Split from #640. See also #1568 for generic python 3 issues.

Might be a good time to bypass gtk completely: #812.

Thu, 20 Jul 2017 16:43:39 GMT - Antoine Martin: status, description changed

Sun, 17 Sep 2017 12:04:37 GMT - Antoine Martin: status changed; resolution set

Done in r16892 with one important caveat: we can't update the clipboard contents on the SelectionData object we're given with Gtk.SelectionData.set (no idea why), so we update the clipboard and claim ownership of it. (we own the token) This only works for text contents..

Sat, 23 Jan 2021 05:28:30 GMT - migration script:

this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/1589