bug#55208: 29.0.50; MS-Windows GUI selection dialogs and double-buffering

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: 55208@debbugs.gnu.org
> Date: Sat, 07 May 2022 16:26:39 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > w32_msg_pump doesn't handle WM_PAINT, so I'm not sure what you mean
> > here.  Also, AFAIK w32_msg_pump runs in a separate thread, so is it
> > safe to call BitBlt from that thread?
> 
> Sorry, I meant `w32_msg_pump'.

That's what I said: w32_msg_pump doesn't currently handle WM_PAINT, it
only handles WM_EMACS_* messages we send to it.  Did you mean
w32_wnd_proc instead?  Or what am I missing?