From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Ken Brown Newsgroups: gmane.emacs.devel Subject: Re: MS Windows double buffering Date: Sat, 30 Apr 2022 13:34:32 -0400 Message-ID: References: <877d791thh.fsf.ref@yahoo.com> <877d791thh.fsf@yahoo.com> <83ilqtbl3p.fsf@gnu.org> <87sfpxz8a7.fsf@yahoo.com> <87mtg4zhlg.fsf@yahoo.com> <87mtg3unzu.fsf@yahoo.com> <835ymr9i9v.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="13952"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1 Cc: emacs-devel@gnu.org To: Eli Zaretskii , Po Lu Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Apr 30 19:36:46 2022 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nkr1S-0003NT-2c for ged-emacs-devel@m.gmane-mx.org; 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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:289065 Archived-At: On 4/30/2022 2:50 AM, Eli Zaretskii wrote: > . w32term.c is also used in the Cygwin w32 build, (which produces a > Cygwin Emacs that uses the native MS-Windows GUI functions instead > of X). Will this code work in that build? If not, the new code > should be ifdef'ed away on Cygwin. Ken, can you please chime in > and help us DTRT here? I just built the Cygwin w32 build from git commit 0ea0aa255 and evaluated (while t (redraw-display) (redisplay)) I saw some flicker in the menu bar but nowhere else. I tried the same thing in a Cygwin w32 build of emacs-28.1, and there was severe flickering throughout the frame. So there's a noticeable improvement. I'll keep testing over the next few days and let you know if I see any problems. Ken