Re: Removing the `window-id' frame parameter on non-Core Input platforms

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: emacs-devel@gnu.org
> Date: Sat, 18 Dec 2021 15:53:29 +0800
> 
> Essentially, to work around the freeze described in PROBLEMS, a frame's
> window is recreated which changes the XID of the frame.  Non-Emacs X
> clients that have kept track of the previous XID will crash with a
> BadValue error when trying to use the previous XID.

But that isn't Emacs-specific, is it?  AFAIR, the window ID is a
general X feature, we just support it.

> Other uses of the `window-id' parameter such as to display windows as
> children of a frame are discouraged on XInput2 builds, as it can
> interfere with XInput2 event handling

You mean, using it for our child frames?