> Since deprecated means "do not use in new code", I would rather not provide it to be used at all.

Fair enough.

Re `GAccessor`, I haven't dug into this yet. The only use I have so far for GdkWindow is getting the pointer position. But of course time may encourage me to add more. I can imagine wanting to hide or unhide window in response to a key binding, and a `destroyall`---not sure yet what those would require.