RE: [EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on Windows 11 Enterprise.
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@cygwin.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@cygwin.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
#include
#include
#include
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 Ctrlv: paste-clipboard()\n
Ctrlc: copy-clipboard()\n Ctrlx: cut-clipboard()";
String translations_ignore = "#override\n Ctrlv: ignore_cut_paste()\n
Ctrlc: ignore_cut_paste()\n Ctrlx: 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);
}
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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@cygwin.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
#include
#include
#include
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 Ctrlv: paste-clipboard()\n
Ctrlc: copy-clipboard()\n Ctrlx: cut-clipboard()";
String translations_ignore = "#override\n Ctrlv: ignore_cut_paste()\n
Ctrlc: ignore_cut_paste()\n Ctrlx: 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);
}
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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
#include
#include
#include
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 Ctrlv: paste-clipboard()\n
Ctrlc: copy-clipboard()\n Ctrlx: cut-clipboard()";
String translations_ignore = "#override\n Ctrlv: ignore_cut_paste()\n
Ctrlc: ignore_cut_paste()\n Ctrlx: 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);
}
--
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RE: [EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on Windows 11 Enterprise.
>-Original Message- >From: Brian Inglis >Sent: Monday, November 6, 2023 2:14 PM >To: cygwin@cygwin.com >Cc: Stone, Timothy M >Subject: Re: [EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on >Windows 11 Enterprise. >On 2023-11-06 12:04, Stone, Timothy M via Cygwin wrote: >>> Have you tried the original Motif copy/cut/paste C-Ins/S-Del/S-Ins >>> available at Windows system level to see if that can give you some >>> hints about what's happening? >> I don't know how to do this...can you explain? >Try Ctrl-Insert/Shift-Delete/Shift-Insert instead of ^C/^X/^V and see if >anything is the same/different and if that tells you anything more. Using these system commands gives the exact same results as in my app: Ctrl-insert or Ctrl-c: Should "copy", but crashes every time. Shift-Delete or Ctrl-x: Should "cut", but crashes every time. Shift-insert or Ctrl-v: Should "paste", but does nothing if I have the cursor positioned. Actually, if I have some characters highlighted, they go away, as if I pasted "nothing". At least it doesn't crash! Perhaps because the cygwin clipboard is empty and it isn't for some reason using the system clipboard, it special cases to just remove the characters and not crash? PS I have obviously started xwin with "-clipboard" (since it works on Windows 7). It should see the system clipboard and paste that value. -- 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
Re: [EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on Windows 11 Enterprise.
On 2023-11-06 12:04, Stone, Timothy M via Cygwin wrote: Have you tried the original Motif copy/cut/paste C-Ins/S-Del/S-Ins available at Windows system level to see if that can give you some hints about what's happening? I don't know how to do this...can you explain? Try Ctrl-Insert/Shift-Delete/Shift-Insert instead of ^C/^X/^V and see if anything is the same/different and if that tells you anything more. -- Take care. Thanks, Brian Inglis Calgary, Alberta, Canada La perfection est atteinte Perfection is achieved non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut -- Antoine de Saint-Exupéry -- 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
RE: [EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on Windows 11 Enterprise.
>Have you tried the original Motif copy/cut/paste C-Ins/S-Del/S-Ins available >at Windows system level to see if that can give you some hints about what's >happening? > >-- >Take care. Thanks, Brian Inglis Calgary, Alberta, Canada > >La perfection est atteinte Perfection is achieved >non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add >mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut > -- Antoine de Saint-Exupéry I don't know how to do this...can you explain? -- 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
Re: [EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on Windows 11 Enterprise.
On 2023-11-06 11:33, Stone, Timothy M via Cygwin wrote:
On 03/11/2023 20:17, Stone, Timothy M via Cygwin wrote:
I'm having a really hard time debugging this issue.
If I use the exact same version of cygwin and XWin, exact same code,
exact same Motif GUI app...
I find that when I try to use copy/paste functionality in
TextFieldWidgets:
*Cut/Copy/Paste works perfectly on Windows 7 Professional
*Cut/Copy/Paste does not work at all and typically crashes on
Windows 11 Enterprise
I'm assuming this means "the X server crashes", but it's not exactly clear.
If that is the case, there are some instructions on generating backtraces to
help with debugging at [1].
[1] https://x.cygwin.com/devel/backtrace.html
I am using an older version of cygwin for this specific test (cygwin 1.7.15
and XWin 1.13.2-1), but I am having the same issue with the latest version
as well.>> Any help greatly appreciated! Seems this must be a system issue since
everything about the cygwin and XWin is exactly the same on both systems?> It's not really safe to make assumptions like this. This could be a latent
bug in XWin which just happens to get exposed on W11 (or that particular
system, even)...
Thanks for your reply. I didn't provide enough information last time, sorry
about that. > Let me start over, with an example and some brief code.
Below is some simple code to bring up a shell with a TextField widget in it.
When I initialize the TextField widget, I change the code to use 1 of the 2
listed translations:
translations_copypaste: This translation table calls the built-in actions
for paste-clipboard, copy-clipboard, and cut-clipboard when the familiar
ctrl-c, ctrl-x, and ctrl-v are pressed.
translations_ignore: This translation table always calls ignore_cut_paste() when the
same keys are pressed. This function just prints a message to the console
("Ignoring") so I know it's working.
This is almost the entire program. All that is missing is initializing the
parent and the app_context.
What happens is:
On Windows 7 Professional:
Both translation tables work as expected:
translations_ignore: Correctly causes the text "Ignoring" to print every time
ctrl-c, ctrl-x, or ctrl-v are pressed.
translations_copypaste: Correctly causes text in the small window to
cut/paste/copy as expected and is integrated with the system clipboard.
On Windows 11 Enterprise:
translations_ignore: Correctly causes the text "Ignoring" to print every time
ctrl-c, ctrl-x, or ctrl-v are pressed.
translations_copypaste: My application (not the X-Server) crashes every time
ctrl-c, ctrl-x, or ctrl-v are pressed. The X-Server seems to continue running.
I don't know how to debug this further...
it seems like the translation table is working, since the "ignore"
translation table works...
also, everything works perfectly on Windows 7 professional, so it seems like the
"should"" be OK.
Code:
void ignore_cut_paste(Widget widget, XEvent *event, String *args, int *num_args)
{
printf("Ignoring\n");
}
void TestPaste(Widget parent)
{
Widget thewin,rowcol,textarea;
XtActionsRec actions2;
actions2.string = "ignore_cut_paste";
actions2.proc = (XtActionProc)ignore_cut_paste;
XtAppAddActions (app_context, &actions2, 1);
String translations_copypaste = "#override\n Ctrlv: paste-clipboard()\n
Ctrlc: copy-clipboard()\n Ctrlx: cut-clipboard()";
String translations_ignore = "#override\n Ctrlv: ignore_cut_paste()\n Ctrlc:
ignore_cut_paste()\n Ctrlx: ignore_cut_paste()";
thewin = XtCreatePopupShell("Test", topLevelShellWidgetClass,parent,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);
}
Have you tried the original Motif copy/cut/paste C-Ins/S-Del/S-Ins available at
Windows system level to see if that can give you some hints about what's happening?
--
Take care. Thanks, Brian Inglis Calgary, Alberta, Canada
La perfection est atteinte Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut
-- Antoine de Saint-Exupéry
--
Problem reports: https://cygwin.com/problems.html
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RE: [EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on Windows 11 Enterprise.
Thanks for your reply. I didn't provide enough information last time, sorry
about that.
Let me start over, with an example and some brief code.
Below is some simple code to bring up a shell with a TextField widget in it.
When I initialize the TextField widget, I change the code to use 1 of the 2
listed translations:
translations_copypaste: This translation table calls the built-in actions
for paste-clipboard, copy-clipboard, and cut-clipboard when the familiar
ctrl-c, ctrl-x, and ctrl-v are pressed.
translations_ignore: This translation table always calls ignore_cut_paste()
when the same keys are pressed. This function just prints a message to the
console ("Ignoring") so I know it's working.
This is almost the entire program. All that is missing is initializing the
parent and the app_context.
What happens is:
On Windows 7 Professional:
Both translation tables work as expected:
translations_ignore: Correctly causes the text "Ignoring" to print every time
ctrl-c, ctrl-x, or ctrl-v are pressed.
translations_copypaste: Correctly causes text in the small window to
cut/paste/copy as expected and is integrated with the system clipboard.
On Windows 11 Enterprise:
translations_ignore: Correctly causes the text "Ignoring" to print every time
ctrl-c, ctrl-x, or ctrl-v are pressed.
translations_copypaste: My application (not the X-Server) crashes every time
ctrl-c, ctrl-x, or ctrl-v are pressed. The X-Server seems to continue running.
I don't know how to debug this further...
it seems like the translation table is working, since the "ignore"
translation table works...
also, everything works perfectly on Windows 7 professional, so it seems like
the "should"" be OK.
Code:
void ignore_cut_paste(Widget widget, XEvent *event, String *args, int *num_args)
{
printf("Ignoring\n");
}
void TestPaste(Widget parent)
{
Widget thewin,rowcol,textarea;
XtActionsRec actions2;
actions2.string = "ignore_cut_paste";
actions2.proc = (XtActionProc)ignore_cut_paste;
XtAppAddActions (app_context, &actions2, 1);
String translations_copypaste = "#override\n Ctrlv: paste-clipboard()\n
Ctrlc: copy-clipboard()\n Ctrlx: cut-clipboard()";
String translations_ignore = "#override\n Ctrlv: ignore_cut_paste()\n
Ctrlc: ignore_cut_paste()\n Ctrlx: ignore_cut_paste()";
thewin = XtCreatePopupShell("Test", topLevelShellWidgetClass,parent,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);
}
-Original Message-
From: Jon Turney
Sent: Saturday, November 4, 2023 11:11 AM
To: Stone, Timothy M ; The Cygwin Mailing List
Subject: [EXT] Re: XWin copy/paste succeeds on Windows 7, crashes on Windows 11
Enterprise.
*** This email originated outside of IDA. Please verify that you recognize the
sender and know the content is safe before proceeding. ***
On 03/11/2023 20:17, Stone, Timothy M via Cygwin wrote:
>
>
> I'm having a really hard time debugging this issue.
>
>
>
> If I use the exact same version of cygwin and XWin, exact same code, exact
> same Motif GUI app...
>
>
>
> I find that when I try to use copy/paste functionality in TextFieldWidgets:
>
>
>
>*Cut/Copy/Paste works perfectly on Windows 7 Professional
>
>
>
>*Cut/Copy/Paste does not work at all and typically crashes on
> Windows 11 Enterprise
>
I'm assuming this means "the X server crashes", but it's not exactly clear.
If that is the case, there are some instructions on generating backtraces to
help with debugging at [1].
[1] https://x.cygwin.com/devel/backtrace.html
>
> I am using an older version of cygwin for this specific test (cygwin 1.7.15
> and XWin 1.13.2-1), but I am having the same issue with the latest version as
> well.
>
[...]
>
> Any help greatly appreciated! Seems this must be a system issue since
> everything about the cygwin and XWin is exactly the same on both systems?
It's not really safe to make assumptions like this. This could be a latent bug
in XWin which just happens to get exposed on W11 (or that particular system,
even)...
--
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