X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:message-id:in-reply-to:references
	:subject:mime-version:content-type:content-transfer-encoding; q=
	dns; s=default; b=iRcJKt1gZeR5wO+Ted8f164E+cCtAVCvZvwrlau+NRpDdD
	XojoUmhtDLxGZci2ffCAq8Ja9AQBquw/WyvG2GONcGLKW4P6gVJ8ca3YcWZd78oD
	mUEP8ypcfBdSzrOoBQFuVvwv75H7/HIKEVMJ+ouUye35AiuRF8AF8CXtOugwg=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:message-id:in-reply-to:references
	:subject:mime-version:content-type:content-transfer-encoding; s=
	default; bh=scQ5kLgoMkhnwcZ7kVmJy6ayEbE=; b=SZdocFRKx4I4a/NXSujP
	zek2KhypJ71LUc3/3FLseUTbxHb7VSJiHIUmy4t/pKodedWipoY/he1/AmazPfsp
	t8BHS6yk/s37mble+YF1iY+fXeMEIrCYD+0tpFvBFHWZzJBagY5f5RYxP/pwvuXb
	v95OXkRTFunNF13UYt82TuA=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Spam-SWARE-Status:	No, score=0.6 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=ham version=3.3.1 spammy=brush, paint, H*UA:Win, responding
X-HELO:	mail.directv.net
DKIM-Signature:	v=1; a=rsa-sha1; d=wildblue.net; s=20170921; c=relaxed/simple; q=dns/txt; i=@wildblue.net; t=1573292952; h=From:Subject:Date:To:MIME-Version:Content-Type; bh=3w48zn87RN3UYv/r0JwCmVoOcVI=; b=VjUM6zYP9nKKtjVogz4D8mHYz/+CiRdcRqKp13cTbfvExSeGqODJ3h0mlYTwMVB0 mwWp6UItFmudlIH4GNE6Xsg0gt4s4/qCnGAm+JhtudlirNb1flR05BUsUkoejd0g 8+LN9q0xc/cO9SgGaOQcuOiFaYRB1LZLx863uGw0W1dvs5wRGuFktPItrvU2WhEe RDSLUgnhMplJwtfn8IVdHn8qFEN3vPJkzNm5oojkdmCYaYeJulPK+zCyU7KxjD1M sBRGz+IeZaBqlAjDX38PjE4IMtppuKiyZm4CWfRrVxSLBTEVudtfq4ZM/qSXCE4k odHunH19vwhnpYVDUPZIPA==;
X_CMAE_Category:	, ,
X-CM-Score:	0
X-Authed-Username:	bWljay5wZWFyc29uQHdpbGRibHVlLm5ldA==
Date:	Sat, 9 Nov 2019 04:49:12 -0500 (EST)
From:	Mick Pearson <mick DOT pearson AT wildblue DOT net>
To:	cygwin <cygwin AT cygwin DOT com>
Message-ID:	<1603999286.4785804.1573292952544.JavaMail.zimbra@wildblue.net>
In-Reply-To:	<345212924.4774581.1573291267579.JavaMail.zimbra@wildblue.net>
References:	<345212924 DOT 4774581 DOT 1573291267579 DOT JavaMail DOT zimbra AT wildblue DOT net>
Subject:	Re: XWin can't hold OpenGL picture, has WS_DISABLED and WS_EX_TRANSPARENT styles?
MIME-Version:	1.0

P.S. Sorry to add, the WM_ERASEBKGND message occurred to me, or setting the 
class-background to the "null" brush is a likely culprit. It is behaving like
a front-buffered old-fashioned application somewhat. Clipping and own-DC style 
should prevent damage, but I don't know, something seems to be responding to 
PAINT like events, that don't make sense for OpenGL.

Below is line formatted version of the old text. I have to do this manually for
new text, but the > quoted text is already hard-wrapped.

> XWin has never had a permanent picture with OpenGL. Any movement "damages" all
> windows. I know I've looked at it before, but I checked its window/class styles
> with MS's Spy++ tool today. The normal styles that govern clipping and
> permanence look fine, but it has some weird styles that normally for disabled
> and transparent windows that I wonder are the cause for its abnormal behavior
> in this regard. No OpenGL apps that just draw only OpenGL on a window have
> XWin's problem.
> 
> To be brief, it has these unnatural window-styles in this mail's subject line.
> Other than that, I think it may use Direct3D instead of OpenGL, but normally
> drawing OpenGL or Direct3D onto plain windows doesn't clobber other windows. I
> mean, you have to work hard to make it do something like that.
> 
> A second, unrelated, oddity is the window decorations are sometimes classic
> style, and sometimes current style. It's very odd. It's random in the same
> session. The windows seem to undergo a transition from classic to current, but
> get stuck in classic sometimes. Maybe they are using the old "animated" show
> functions that didn't survive the version of Windows that introduced them.
> 
> Niggling things like this could be fixed. But I don't know how many people use
> Cygwin. I've used it a lot over the years myself, to do development work. XWin
> is the most stable X server. Others don't really get close. But it's kind of
> too comfortable with its crumminess too. Not that I'm going to shove my work
> aside to try to remedy it myself.
> 
> --
> As with mail, anyone who wishes may send email from your email address. In the
> case you receive obscene or unusual email from an address with which you are
> familiar. It could be someone is impersonating that email address. Always
> return a copy of the email to the sender for review and response.

-- 
As with mail, anyone who wishes may send email from your email address. In the case you receive obscene or unusual email from an address with which you are familiar. It could be someone is impersonating that email address. Always return a copy of the email to the sender for review and response.

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -