X-Recipient:	archive-cygwin AT delorie DOT com
DKIM-Filter:	OpenDKIM Filter v2.11.0 sourceware.org CC1823882046
DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com;
	s=default; t=1700158936;
	bh=p4y8CunCLETq89T1y9otBYVoZ3tqW3IzLtrBmQfrlXk=;
	h=To:Subject:Date:References:In-Reply-To:List-Id:List-Unsubscribe:
	List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:
	From;
	b=eZKWh/W4l1zUL+5o3TEDYcL+bIjicX1IanHSbbKO+vUnK+XUctWkSBCs6QYN13yAv
	hWfp8HS7tkSFZTItKk5dKOQgEK75H8qvWtGVYJkmcY+A0cjH4G9UcP+aPXfq0CTslv
	FkqdGGy0bxgh359ozJeAP8JFIszUgOmn1SMPGlPQ=
X-Original-To:	cygwin AT cygwin DOT com
Delivered-To:	cygwin AT cygwin DOT com
DMARC-Filter:	OpenDMARC Filter v1.4.2 sourceware.org A51A13858286
ARC-Filter:	OpenARC Filter v1.0.0 sourceware.org A51A13858286
ARC-Seal:	i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1700158901; cv=none;
	b=FD19lnTVmqWzzzFd+azBWFOuB6mHzQcEbhIQfTEppGpTI/2In2MPHlCAlP2N8xUlY2mNcFQJ93axTYQJvkQUdeeGGBL/Q9iGyPuQwFxt9FXQiKFyniu8ccQO/OTrMgogBc/tFqKn3OWUjc06kYhUKW2YYA4NA5ZNyS5Udngh0Mw=
ARC-Message-Signature:	i=1; a=rsa-sha256; d=sourceware.org; s=key;
	t=1700158901; c=relaxed/simple;
	bh=b3yUjaayJhA8JvN+s62nuraI30ZPoZ5HqyiuNocemM4=;
	h=DKIM-Signature:From:To:Subject:Date:Message-ID:MIME-Version;
	b=RkXoUJQypWR4KDgtDEJJN/9yKP0/Jp4UtSH0rceMflSYpgI6NY5c2XVxg+gMzf5wQAq5ZPnrxUtml/oV9oYZyuJb3GRg34HIVDHqtGDEknRmv32dqzMZGy2+2td4BbtGDcjoOHG5sfQcqq/GmNLCxNY4P1h9bn5KLCNSzYqkFaY=
ARC-Authentication-Results:	i=1; server2.sourceware.org
To:	"'cygwin AT cygwin DOT com'" <cygwin AT cygwin DOT com>
Subject:	RE: [EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on
	Windows 11 Enterprise.
Thread-Topic:	[EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on
	Windows 11 Enterprise.
Thread-Index:	AdoOkZldZkaI/m/oSRiHM2QwVvHrlwAwP1KAAGK0UJAAC8zygAAKLbIA//+0CACAAEugYP//Lyyw//zsZ1D/7RMzgA==
Date:	Thu, 16 Nov 2023 18:21:38 +0000
Message-ID:	<5c374b0c81c54137b616908f7c74e8cb@ida.org>
References:	<242d35130d84418d934265782064690b AT ida DOT org>
	<18fd5519-180d-4d48-95d1-994f7c5e36f5 AT dronecode DOT org DOT uk>
	<474496f4a2e94e3c8ba06e1a2eaa1d75 AT ida DOT org>
	<7166752f-e08e-4595-8915-d8eaec920718 AT Shaw DOT ca>
	<af765413f9df4a0790339f7c27d76c31 AT ida DOT org>
	<ab909be4-f56a-4bef-9931-e10193162967 AT Shaw DOT ca>
	<963e0be7a77b4e849cfbca73c209abb4 AT ida DOT org>
	<bf868d8832604b32b11c63e8f9cdb10d AT ida DOT org>
	<9972254cab724b11a337507a379a1792 AT ida DOT org>
In-Reply-To:	<9972254cab724b11a337507a379a1792@ida.org>
Accept-Language:	en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip:	[10.0.14.18]
MIME-Version:	1.0
X-Spam-Status:	No, score=-2.1 required=5.0 tests=BAYES_00, DKIM_SIGNED,
	DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, HTML_MESSAGE, SPF_HELO_NONE,
	SPF_PASS, TXREP,
	T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version:	SpamAssassin 3.4.6 (2021-04-09) on
	server2.sourceware.org
X-Content-Filtered-By:	Mailman/MimeDel 2.1.30
X-BeenThere:	cygwin AT cygwin DOT com
X-Mailman-Version:	2.1.30
List-Id:	General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Archive:	<https://cygwin.com/pipermail/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe:	<https://cygwin.com/mailman/listinfo/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
From:	"Stone, Timothy M via Cygwin" <cygwin AT cygwin DOT com>
Reply-To:	"Stone, Timothy M" <tstone AT ida DOT org>
Sender:	"Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>

I've finally figured out what was happening here.

The issue was not related to Cygwin.


For those interested:

I compile my app using libraries from Exceed, then later use Cygwin as my X Server.

I had (2) problems here:
(1) I was using the wrong version of the Exceed DLLs at runtime.
(2) There appears to be a bug in Exceed 15 where if you set the environment variable "UserDir", it causes the cut/paste functionality to not work.  There was a previous bug where NOT setting this variable caused other issues.

thanks for all your help!




From: Stone, Timothy M
Sent: Wednesday, November 8, 2023 10:24 AM
To: 'cygwin AT cygwin DOT com' <cygwin AT cygwin DOT com>
Subject: RE: [EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on Windows 11 Enterprise.


I have made an important discovery here.  I've been using "release" mode when compiling, and had the following results:


On Windows 11 enterprise (release):

When using "translations_ignore", it correctly just prints "Ignoring" every time I cut/copy/paste.

When using "translations_copypaste", the program crashes.



On Windows 7 professional (release):

When using "translations_ignore", it correctly just prints "Ignoring" every time I cut/copy/paste.

When using "translations_copypaste", it correctly cuts/copies/pastes.


I have now compiled and run the program in "debug" mode and have noticed an important difference.

Instead of crashing on Windows 11 when trying to copy/paste, the program prints an error message and actually exits.

The error message is:
"Error: Error - registered format name must be nonnull"

Does anyone know where this error message is coming from?

I am starting to suspect that Windows clipboard integration routines have changed since Windows 7 and are not being used correctly internally.
I see there are some functions (which I presume are used internally) that sound a lot like this error message.
"RegisterClipboardFormat()" and "GetClipboardFormatName()", for instance.


Hopefully this new information can help the experts help me determine why my program is working on Windows 7 and crashing on Windows 11.

thanks!



From: Stone, Timothy M
Sent: Tuesday, November 7, 2023 12:21 PM
To: cygwin AT cygwin DOT com
Subject: RE: [EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on Windows 11 Enterprise.




I have created an entire program to test this.  It's only 40 lines.  The program pops up a type in window...then you can type something in it and test the copy/paste.



On Windows 11 enterprise:

When using "translations_ignore", it correctly just prints "Ignoring" every time I cut/copy/paste.

When using "translations_copypaste", the program crashes.



On Windows 7 professional:

When using "translations_ignore", it correctly just prints "Ignoring" every time I cut/copy/paste.

When using "translations_copypaste", it correctly cuts/copies/pastes.



Of course, you'll need to link with X/Motif libraries, and possibly change the one line to point at your XKeysymDB, but this 40 line program shows the whole problem:




#include <stdio.h>
#include <stdlib.h>
#include <Xm/RowColumn.h>
#include <Xm/TextF.h>

void ignore_cut_paste(Widget widget, XEvent *event, String *args, int *num_args)
{
  printf("Ignoring\n");
}

int main(int argc, char **argv)
{
  Widget W,thewin,rowcol,textarea;
  XtAppContext app_context;
  XtActionsRec actions2;

  _putenv("display=127.0.0.1:0.0");
  _putenv("xkeysymdb=.\\XKeysymDB");

  W = XtAppInitialize(&app_context, (String)"Test",NULL,(Cardinal)0,&argc,argv,NULL,NULL,(Cardinal)0);

  actions2.string = "ignore_cut_paste";
  actions2.proc = (XtActionProc)ignore_cut_paste;
  XtAppAddActions (app_context, &actions2, 1);

  String translations_copypaste = "#override\n Ctrl<Key>v:  paste-clipboard()\n Ctrl<Key>c:  copy-clipboard()\n Ctrl<Key>x:  cut-clipboard()";
  String translations_ignore = "#override\n Ctrl<Key>v:  ignore_cut_paste()\n Ctrl<Key>c:  ignore_cut_paste()\n Ctrl<Key>x:  ignore_cut_paste()";

  thewin = XtCreatePopupShell("Test", topLevelShellWidgetClass,W,NULL,0);
  rowcol = XtVaCreateWidget ("rowcol",xmRowColumnWidgetClass, thewin, NULL);
  textarea = XtVaCreateManagedWidget ("test_area",
                                  xmTextFieldWidgetClass, rowcol,
                                  XmNmaxLength,        80,
                                  XmNtranslations,     XtParseTranslationTable ( translations_copypaste ) ,
                                  NULL);
  XtManageChild(textarea);
  XtManageChild (rowcol);
  XtPopup(thewin,XtGrabNone);
  XtAppMainLoop(app_context);
}







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

- Raw text -