From sysrpl at gmail.com  Thu Apr  1 08:58:24 2021
From: sysrpl at gmail.com (Anthony Walter)
Date: Thu, 1 Apr 2021 02:58:24 -0400
Subject: [Lazarus] Clipboard Data Goes Away
Message-ID: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>

On Linux Gtk2, over time I have noticed a problem where data copied to the
clipboard by a Lazarus application does not persist on the clipboard after
the Lazarus program has exited.

While writing this application
<https://cache.getlazarus.org/images/desktop/capture-tool.png> that
captures image data to the clipboard, the data on the clipboard is only
available to other applications while mine is running. If I exit my program
the clipboard data goes away. The same problem occurs if the clipboard data
is text rather than a bitmap.

Is this a known issue on Linux LCL Gtk2? Is there a workaround?

Thank you for your attention.
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From l at c-m-w.me.uk  Thu Apr  1 09:24:58 2021
From: l at c-m-w.me.uk (Colin Western)
Date: Thu, 1 Apr 2021 08:24:58 +0100 (BST)
Subject: [Lazarus] Clipboard Data Goes Away
In-Reply-To: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
Message-ID: <795207543.360698.1617261898270@email.ionos.co.uk>

This is the way the linux clipboard works - the data is kept with the source program, so goes when the program closes.

Colin

> On 01/04/2021 07:58 Anthony Walter via lazarus <lazarus at lists.lazarus-ide.org> wrote:
> 
> 
> On Linux Gtk2, over time I have noticed a problem where data copied to the clipboard by a Lazarus application does not persist on the clipboard after the Lazarus program has exited.
> 
> While writing this application (https://cache.getlazarus.org/images/desktop/capture-tool.png) that captures image data to the clipboard, the data on the clipboard is only available to other applications while mine is running. If I exit my program the clipboard data goes away. The same problem occurs if the clipboard data is text rather than a bitmap.
> 
> Is this a known issue on Linux LCL Gtk2? Is there a workaround?
> 
> Thank you for your attention.
> 
> -- _______________________________________________ lazarus mailing list lazarus at lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus

From sysrpl at gmail.com  Thu Apr  1 09:26:47 2021
From: sysrpl at gmail.com (Anthony Walter)
Date: Thu, 1 Apr 2021 03:26:47 -0400
Subject: [Lazarus] Clipboard Data Goes Away
In-Reply-To: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
Message-ID: <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>

I noticed a recent discussion touching on this problem posted by Bo
Berglund on November 20, 2020 to this same mailing list.

Andreas Schneider replied in that thread, 'Pasting basically asks the
application that "copied" it to get the content. If that app is gone in the
meantime, there's nothing to paste anymore.'

Also, Colin Western replied this is how Linux applications work, 'the data
is kept with the source program, so goes when the program closes'.

I disagree.

I've tested several Gtk2 applications, including older versions of Gimp
and  Geany. Both these programs have clipboard copy functions and the data
on the clipboard from those applications my tests show their clipboard data
persists after they have been closed. So it would seem that Gtk2 the
clipboard works correctly and handles persisting data after an application
has exited.

I stepped through the LCL source and it looks like the clipboard code is
using some Gtk clipboard functions, and not using X windows functions,
thereby introducing a possible problem, but I am unsure if the LCL is using
the Gtk clipboard correctly. That is, the LCL might be using some Gtk
clipboard functions which seem to work well, but exhibit the problematic
behaviour I've described.
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From l at c-m-w.me.uk  Thu Apr  1 09:42:59 2021
From: l at c-m-w.me.uk (Colin Western)
Date: Thu, 1 Apr 2021 08:42:59 +0100 (BST)
Subject: [Lazarus] Clipboard Data Goes Away
In-Reply-To: <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
 <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
Message-ID: <1830908332.361221.1617262979037@email.ionos.co.uk>

I am very confident that the X11 behaviour is that the data goes with the application. It might be that more recent desktops/toolkits have some work around, but the gtk2 functions lazarus uses only copy data externally when asked for by an X11 messaage and this is all gtk2 provides.

Colin


> On 01/04/2021 08:26 Anthony Walter via lazarus <lazarus at lists.lazarus-ide.org> wrote:
> 
> 
> I noticed a recent discussion touching on this problem posted by Bo Berglund on November 20, 2020 to this same mailing list.
> 
> Andreas Schneider replied in that thread, 'Pasting basically asks the application that "copied" it to get the content. If that app is gone in the meantime, there's nothing to paste anymore.'
> 
> Also, Colin Western replied this is how Linux applications work, 'the data is kept with the source program, so goes when the program closes'.
> 
> I disagree.
> 
> I've tested several Gtk2 applications, including older versions of Gimp and Geany. Both these programs have clipboard copy functions and the data on the clipboard from those applications my tests show their clipboard data persists after they have been closed. So it would seem that Gtk2 the clipboard works correctly and handles persisting data after an application has exited.
> 
> I stepped through the LCL source and it looks like the clipboard code is using some Gtk clipboard functions, and not using X windows functions, thereby introducing a possible problem, but I am unsure if the LCL is using the Gtk clipboard correctly. That is, the LCL might be using some Gtk clipboard functions which seem to work well, but exhibit the problematic behaviour I've described.
> -- _______________________________________________ lazarus mailing list lazarus at lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus

From michael at freepascal.org  Thu Apr  1 09:44:26 2021
From: michael at freepascal.org (Michael Van Canneyt)
Date: Thu, 1 Apr 2021 09:44:26 +0200 (CEST)
Subject: [Lazarus] Clipboard Data Goes Away
In-Reply-To: <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
 <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
Message-ID: <alpine.DEB.2.22.394.2104010941001.579266@home>



On Thu, 1 Apr 2021, Anthony Walter via lazarus wrote:

> I noticed a recent discussion touching on this problem posted by Bo
> Berglund on November 20, 2020 to this same mailing list.
>
> Andreas Schneider replied in that thread, 'Pasting basically asks the
> application that "copied" it to get the content. If that app is gone in the
> meantime, there's nothing to paste anymore.'
>
> Also, Colin Western replied this is how Linux applications work, 'the data
> is kept with the source program, so goes when the program closes'.
>
> I disagree.
>
> I've tested several Gtk2 applications, including older versions of Gimp
> and  Geany. Both these programs have clipboard copy functions and the data
> on the clipboard from those applications my tests show their clipboard data
> persists after they have been closed. So it would seem that Gtk2 the
> clipboard works correctly and handles persisting data after an application
> has exited.
>
> I stepped through the LCL source and it looks like the clipboard code is
> using some Gtk clipboard functions, and not using X windows functions,
> thereby introducing a possible problem, but I am unsure if the LCL is using
> the Gtk clipboard correctly. That is, the LCL might be using some Gtk
> clipboard functions which seem to work well, but exhibit the problematic
> behaviour I've described.

I think the programs you tested use some extra functions, because as these
2 persons already said: under X11, the selection is owned by the program,
not by X11.

See e.g.

https://www.uninformativ.de/blog/postings/2017-04-02/0/POSTING-en.html
https://wiki.ubuntu.com/ClipboardPersistence

for an explanation.

Basically: if you don't communicate with a persistent clipboard app, then
nothing will happen to persist your selection.

Michael.


From sysrpl at gmail.com  Thu Apr  1 09:45:16 2021
From: sysrpl at gmail.com (Anthony Walter)
Date: Thu, 1 Apr 2021 03:45:16 -0400
Subject: [Lazarus] Clipboard Data Goes Away
In-Reply-To: <1830908332.361221.1617262979037@email.ionos.co.uk>
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
 <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
 <1830908332.361221.1617262979037@email.ionos.co.uk>
Message-ID: <CAHmPLWW=wH9COsjWTayZPFs29OToq8jxGvkPsRq3vYGFzQXEPQ@mail.gmail.com>

Perhaps there is a Linux service that can be used by applications to hand
over and take ownership of clipboard data, and applications such as those I
mentioned are using it in order to solve the problem I am describing?
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From michael at freepascal.org  Thu Apr  1 09:48:07 2021
From: michael at freepascal.org (Michael Van Canneyt)
Date: Thu, 1 Apr 2021 09:48:07 +0200 (CEST)
Subject: [Lazarus] Clipboard Data Goes Away
In-Reply-To: <CAHmPLWW=wH9COsjWTayZPFs29OToq8jxGvkPsRq3vYGFzQXEPQ@mail.gmail.com>
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
 <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
 <1830908332.361221.1617262979037@email.ionos.co.uk>
 <CAHmPLWW=wH9COsjWTayZPFs29OToq8jxGvkPsRq3vYGFzQXEPQ@mail.gmail.com>
Message-ID: <alpine.DEB.2.22.394.2104010947500.579266@home>



On Thu, 1 Apr 2021, Anthony Walter via lazarus wrote:

> Perhaps there is a Linux service that can be used by applications to hand
> over and take ownership of clipboard data, and applications such as those I
> mentioned are using it in order to solve the problem I am describing?
>

See my earlier reply for some links.

Michael.

From sysrpl at gmail.com  Thu Apr  1 09:55:46 2021
From: sysrpl at gmail.com (Anthony Walter)
Date: Thu, 1 Apr 2021 03:55:46 -0400
Subject: [Lazarus] Clipboard Data Goes Away
In-Reply-To: <alpine.DEB.2.22.394.2104010947500.579266@home>
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
 <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
 <1830908332.361221.1617262979037@email.ionos.co.uk>
 <CAHmPLWW=wH9COsjWTayZPFs29OToq8jxGvkPsRq3vYGFzQXEPQ@mail.gmail.com>
 <alpine.DEB.2.22.394.2104010947500.579266@home>
Message-ID: <CAHmPLWVZTA7gOQX2s9-weB4uG9E5DEGETQWdXe+UhcB06R3PXA@mail.gmail.com>

Thanks Michael.

It looks as if this problem was fixed in Gtk2 by version 2.6. The
developers added this function to work around this problem:

void gtk_clipboard_store (GtkClipboard *clipboard);

Stores the current clipboard data somewhere so that it will stay around
after the application has quit.

Parameters
clipboard

a GtkClipboard

Since: 2.6

Looking at the LCL source, it seems the Gtk3 LCL is using this function to
save the clipboard data after the program exists, but it's not being used
in the Gtk2 LCL. With this function, the problem I've described should be
fixable in LCL Gtk2.
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From sysrpl at gmail.com  Thu Apr  1 10:35:05 2021
From: sysrpl at gmail.com (Anthony Walter)
Date: Thu, 1 Apr 2021 04:35:05 -0400
Subject: [Lazarus] Clipboard Data Goes Away
In-Reply-To: <CAHmPLWVZTA7gOQX2s9-weB4uG9E5DEGETQWdXe+UhcB06R3PXA@mail.gmail.com>
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
 <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
 <1830908332.361221.1617262979037@email.ionos.co.uk>
 <CAHmPLWW=wH9COsjWTayZPFs29OToq8jxGvkPsRq3vYGFzQXEPQ@mail.gmail.com>
 <alpine.DEB.2.22.394.2104010947500.579266@home>
 <CAHmPLWVZTA7gOQX2s9-weB4uG9E5DEGETQWdXe+UhcB06R3PXA@mail.gmail.com>
Message-ID: <CAHmPLWVhA-gPfz+N_afthwerXVu+Ak9vuz2=j3FZvWWtF=XUcQ@mail.gmail.com>

Here is a follow-up.

I wrote a simple test using LCL Gtk2 and gtk_clipboard_store. This test
allows the clipboard data to persist after my program exited. Button1 click
sets the clipboard data. If Button2 clicked the data will persist after the
program exits. If Button2 is not clicked, the data does not persist.
Curiously, as the LCL Gtk2 currently stands, gtk_clipboard_store() does not
work. I suspect the LCL is not using the same GdkAtom clipboard as returned
by gtk_clipboard_get(GDK_SELECTION_CLIPBOARD).

uses
  Gtk2, Gdk2;

{ TForm1 }

procedure TForm1.Button1Click(Sender: TObject);
var
  S: string;
begin
  S := Edit1.Text;
  gtk_clipboard_set_text(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD),
PChar(S), Length(S))
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  gtk_clipboard_store(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD));
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  Close;
end;

>
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From l at c-m-w.me.uk  Thu Apr  1 18:51:35 2021
From: l at c-m-w.me.uk (C Western)
Date: Thu, 1 Apr 2021 17:51:35 +0100
Subject: [Lazarus] Clipboard Data Goes Away
In-Reply-To: <CAHmPLWVhA-gPfz+N_afthwerXVu+Ak9vuz2=j3FZvWWtF=XUcQ@mail.gmail.com>
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
 <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
 <1830908332.361221.1617262979037@email.ionos.co.uk>
 <CAHmPLWW=wH9COsjWTayZPFs29OToq8jxGvkPsRq3vYGFzQXEPQ@mail.gmail.com>
 <alpine.DEB.2.22.394.2104010947500.579266@home>
 <CAHmPLWVZTA7gOQX2s9-weB4uG9E5DEGETQWdXe+UhcB06R3PXA@mail.gmail.com>
 <CAHmPLWVhA-gPfz+N_afthwerXVu+Ak9vuz2=j3FZvWWtF=XUcQ@mail.gmail.com>
Message-ID: <b52f9a11-1ed7-4403-d753-cffcdd2bdaac@c-m-w.me.uk>

(You have definitely educated me)

I tried something similar on one of my own applications, and it doesn't 
work for me either. I suspect sometihing more elaborate is required, as 
I don't think the LCL does calls gtk_clipboard_set_text, even for text. 
Reading the documentation for gtk_clipboard_set_can_store suggests this 
should be called also, but a quick trial of this didn't work either.

Colin



On 01/04/2021 09:35, Anthony Walter via lazarus wrote:
> Here is a follow-up.
>
> I wrote a simple test using LCL Gtk2 and gtk_clipboard_store. This 
> test allows the clipboard data to persist after my program exited. 
> Button1 click sets the clipboard data. If Button2 clicked the data 
> will persist after the program exits. If Button2 is not clicked, the 
> data does not persist. Curiously, as the LCL Gtk2 currently stands, 
> gtk_clipboard_store() does not work. I suspect the LCL is not 
> using the same GdkAtom clipboard as returned by 
> gtk_clipboard_get(GDK_SELECTION_CLIPBOARD).
>
> uses
>   Gtk2, Gdk2;
>
> { TForm1 }
>
> procedure TForm1.Button1Click(Sender: TObject);
> var
>   S: string;
> begin
>   S := Edit1.Text;
> gtk_clipboard_set_text(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD), 
> PChar(S), Length(S))
> end;
>
> procedure TForm1.Button2Click(Sender: TObject);
> begin
> gtk_clipboard_store(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD));
> end;
>
> procedure TForm1.Button3Click(Sender: TObject);
> begin
>   Close;
> end;
>
>


From sysrpl at gmail.com  Thu Apr  1 20:55:44 2021
From: sysrpl at gmail.com (Anthony Walter)
Date: Thu, 1 Apr 2021 14:55:44 -0400
Subject: [Lazarus] Clipboard Data Goes Away
In-Reply-To: <b52f9a11-1ed7-4403-d753-cffcdd2bdaac@c-m-w.me.uk>
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
 <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
 <1830908332.361221.1617262979037@email.ionos.co.uk>
 <CAHmPLWW=wH9COsjWTayZPFs29OToq8jxGvkPsRq3vYGFzQXEPQ@mail.gmail.com>
 <alpine.DEB.2.22.394.2104010947500.579266@home>
 <CAHmPLWVZTA7gOQX2s9-weB4uG9E5DEGETQWdXe+UhcB06R3PXA@mail.gmail.com>
 <CAHmPLWVhA-gPfz+N_afthwerXVu+Ak9vuz2=j3FZvWWtF=XUcQ@mail.gmail.com>
 <b52f9a11-1ed7-4403-d753-cffcdd2bdaac@c-m-w.me.uk>
Message-ID: <CAHmPLWX17udbY178WAnD862mb-ERJEB6ObBCtTUf4ncCLP9YaA@mail.gmail.com>

Colin,

After some research I've found that LCL Gtk2 isn't using gtk_clipboard_x
functions, rather it's using gtk_selection_x functions. There are
gtk_clipboard functions to do the same thing as gtk_selection functions,
but because the gtk_clipboard functions are not being used, the
gtk_clipboard_store function does not work with the LCL Gtk2 clipboard.
I've written a mini clipboard class that allows for multiple formats on the
clipboard at the same time and it works well and also allows clipboard data
to persist after my application closes, but my design does not conform to
the WS (widgetset) model used by the LCL, and thus operates outside of the
LCL.

In the end, I'm confident that if LCL Gtk2 were written to use
gtk_clipboard functions instead of gtk_selection functions, the problem
could be fixed. I do not mean to place blame on any of the LCL Gtk2
developers, as the gtk_clipboard functions were most likely developed and
released sometime after the first few iterations of Gtk2. Particularly, the
gtk_clipboard_set_can_store did not exist until Gtk 2.6.
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From bo.berglund at gmail.com  Fri Apr  2 09:12:04 2021
From: bo.berglund at gmail.com (Bo Berglund)
Date: Fri, 02 Apr 2021 09:12:04 +0200
Subject: [Lazarus] Clipboard Data Goes Away
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
 <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
Message-ID: <brfd6gpq7p1eoaeprk9p9ce84e564s7a6q@4ax.com>

On Thu, 1 Apr 2021 03:26:47 -0400, Anthony Walter via lazarus
<lazarus at lists.lazarus-ide.org> wrote:

>I noticed a recent discussion touching on this problem posted by Bo
>Berglund on November 20, 2020 to this same mailing list.
>
I'm back...
In fact I have a *related* clipboard issue inside Lazarus itself:

Working in Lazarus via a VNC connection to a RaspberryPi (Lazarus is on the
RPi).

If I try to search for a string which I have copied in Windows the following
happens:

- String copied in Windows
- Use Ctrl-V in Lazarus and the string is pasted into the code editor OK
- This shows that the string is in the clipboard

- String again copied in Windows
- Hit F3 in Lazarus to start a search, a bogus search term appears
- Use Ctrl-V to paste the copied string into the Lazarus search dialog
- Nothing happens...

- Go back to windows and re-copy the string
- In Lazarus select the bogus search item in the dialog
- Try to replace it with Ctrl-V
- Nothing happens...

- Finally go back to Windows and again copy the search string
- Now in Lazarus use Backspace to erase the bogus search item in the existing
search dialog which was not closed
- Hit Ctrl-V to paste the search string
- NOW FINALLY! The string is pasted into the search dialog

It seems like the clipboard is cleared (or replaced) by the following
opertations in Lazarus:
- Using F3 to start a search operation with nothing selected in the source
- Selecting the bogus word in the search dialog in order to replace it

Why this behaviour? I am constantly being hit with this when I am porting a
Windows application from Delphi to Linux-FreePascal.
I have the project open in Windows and the converted project in Linux and trying
to navigate via searches is just so cumbersome with this behaviour.


-- 
Bo Berglund
Developer in Sweden


From marc at dommelstein.nl  Fri Apr  2 10:08:20 2021
From: marc at dommelstein.nl (Marc Weustink)
Date: Fri, 02 Apr 2021 10:08:20 +0200
Subject: [Lazarus] Clipboard Data Goes Away
In-Reply-To: <brfd6gpq7p1eoaeprk9p9ce84e564s7a6q@4ax.com>
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
 <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
 <brfd6gpq7p1eoaeprk9p9ce84e564s7a6q@4ax.com>
Message-ID: <9AB8CCFB-C654-4AC4-AA40-56FB4358EB39@dommelstein.nl>

Just s general warning, it doesn't say anything about your observations.

Be careful with drawing conclusions when using vnc. The past year I've been working remote and I'm using vnc to access my desktop at work. Transferring clipboard data most times work, but sometimes it is a pain. It won't copy or paste the right selection. Reconnecting vnc usually solves the issue.
This is independent of the source or target application.

So the issue you observed might be caused by vnc or it might be indeed an issue in Lazarus

Marc

On April 2, 2021 9:12:04 AM GMT+02:00, Bo Berglund via lazarus <lazarus at lists.lazarus-ide.org> wrote:
>On Thu, 1 Apr 2021 03:26:47 -0400, Anthony Walter via lazarus
><lazarus at lists.lazarus-ide.org> wrote:
>
>>I noticed a recent discussion touching on this problem posted by Bo
>>Berglund on November 20, 2020 to this same mailing list.
>>
>I'm back...
>In fact I have a *related* clipboard issue inside Lazarus itself:
>
>Working in Lazarus via a VNC connection to a RaspberryPi (Lazarus is on
>the
>RPi).
>
>If I try to search for a string which I have copied in Windows the
>following
>happens:
>
>- String copied in Windows
>- Use Ctrl-V in Lazarus and the string is pasted into the code editor
>OK
>- This shows that the string is in the clipboard
>
>- String again copied in Windows
>- Hit F3 in Lazarus to start a search, a bogus search term appears
>- Use Ctrl-V to paste the copied string into the Lazarus search dialog
>- Nothing happens...
>
>- Go back to windows and re-copy the string
>- In Lazarus select the bogus search item in the dialog
>- Try to replace it with Ctrl-V
>- Nothing happens...
>
>- Finally go back to Windows and again copy the search string
>- Now in Lazarus use Backspace to erase the bogus search item in the
>existing
>search dialog which was not closed
>- Hit Ctrl-V to paste the search string
>- NOW FINALLY! The string is pasted into the search dialog
>
>It seems like the clipboard is cleared (or replaced) by the following
>opertations in Lazarus:
>- Using F3 to start a search operation with nothing selected in the
>source
>- Selecting the bogus word in the search dialog in order to replace it
>
>Why this behaviour? I am constantly being hit with this when I am
>porting a
>Windows application from Delphi to Linux-FreePascal.
>I have the project open in Windows and the converted project in Linux
>and trying
>to navigate via searches is just so cumbersome with this behaviour.
>
>
>-- 
>Bo Berglund
>Developer in Sweden
>
>-- 
>_______________________________________________
>lazarus mailing list
>lazarus at lists.lazarus-ide.org
>https://lists.lazarus-ide.org/listinfo/lazarus

From bo.berglund at gmail.com  Fri Apr  2 10:55:21 2021
From: bo.berglund at gmail.com (Bo Berglund)
Date: Fri, 02 Apr 2021 10:55:21 +0200
Subject: [Lazarus] Clipboard Data Goes Away
References: <CAHmPLWUV8JMBSN3uK15Vm+NZtLw-Fe+H_DL2LdGj3dFyfUnRpA@mail.gmail.com>
 <CAHmPLWV+OjVbKfqRuoogHqE91+UP88aoSMr70aic4Huk4bYVBw@mail.gmail.com>
 <brfd6gpq7p1eoaeprk9p9ce84e564s7a6q@4ax.com>
 <9AB8CCFB-C654-4AC4-AA40-56FB4358EB39@dommelstein.nl>
Message-ID: <48md6gpb58v27ktbvrvvam4aokngg97nji@4ax.com>

On Fri, 02 Apr 2021 10:08:20 +0200, Marc Weustink via lazarus
<lazarus at lists.lazarus-ide.org> wrote:

>Just s general warning, it doesn't say anything about your observations.
>
>Be careful with drawing conclusions when using vnc. The past year I've been working remote and I'm using vnc to access my desktop at work. Transferring clipboard data most times work, but sometimes it is a pain. It won't copy or paste the right selection. Reconnecting vnc usually solves the issue.
>This is independent of the source or target application.
>
>So the issue you observed might be caused by vnc or it might be indeed an issue in Lazarus

Just as a test with Lazarus on Windows I repeated the sequences I described when
copying the same text as before on Windows (in Notepad++) and then using Ctrl-F
or F3 inside Lazarus on Windows in order to start a new search.
The search dialog was showing a nonrelated search string but Ctrl-V worked just
fine to replace it with my copied text.

Here of course VNC is not involved and all operations happened in Windows.

So I now went into the VNC session on Linux and there I opened a text editor in
addition to Lazarus.
I entered text into the text editor and then coped one word there.

Back into Lazarus (still in Linux) I used both Ctrl-F and F3 to start search
dialogs and in both cases there was an unrelated search term coming up, but also
in both cases using Ctrl-V to paste my previously copied text worked fine!

So I must concur with your observation that this case is a VNC clipboard issue!
Good to know, but disturbing nevertheless...

Now I remember having read that Linux has more than one clipboard, possibly VNC
is using the "wrong" one?

But it still works when just copying text from Windows and pasting it directly
into the Lazarus code editor in Linux...

Just not into the search dialog.


-- 
Bo Berglund
Developer in Sweden


From bo.berglund at gmail.com  Thu Apr  8 17:24:30 2021
From: bo.berglund at gmail.com (Bo Berglund)
Date: Thu, 08 Apr 2021 17:24:30 +0200
Subject: [Lazarus] Viewing config data in a tree style
Message-ID: <si7u6gtnfcn5vo29sgsqlf93elmtjnm5h2@4ax.com>


Alluding to the current freepascal list thread about "Directory Tree"...

I wonder if there is some simple way to visually display, edit and save
configuration data that contain settings, which are structured like ini files
with sections and items?

I am porting an application written in Delphi (hence only for Windows) into
Lazarus on Linux. The config data from the registry are displayed in a
multi-level tree, much like how the Windows Registry Editor displays the reg
data.
The multi-level registry stuff is not so easy to transfer into an ini structured
conf file so I am going to flatten it out by having one level of sections and
naming them such that the relations are apparent.

Rather than creating something from scratch I would like to know if there are
some existing controls I can use in Lazarus where I ideally could just load the
control from file and save to file too. And of course edit the name/value pairs
easily.

The Lazarus Tool/Options displays a similarly looking dialog if the right hand
panes are replaced by simple lists of name/value pairs....

Any suggestions?


-- 
Bo Berglund
Developer in Sweden


From bo.berglund at gmail.com  Thu Apr  8 23:24:31 2021
From: bo.berglund at gmail.com (Bo Berglund)
Date: Thu, 08 Apr 2021 23:24:31 +0200
Subject: [Lazarus] How to reduce size of lazarus itself?
Message-ID: <gosu6gpbs72d4mckedre6q4imc2c2pmc74@4ax.com>

I just checked out 2.0.12 on a RaspberryPi4 and built it using my existing fpc
3.2.0.
The size of the executable is 271,368,224 bytes, which reduces to 30,127,876
after using strip -s on it (takes away all the symbols).

Since I am never ever going to be debugging lazarus itself, is there some
setting I can use to NOT include the symbols in the first place?
I want a lean and fast binary...

Obviously since Lazarus rebuilds itself when packages are installed in the IDE,
this setting must be part of the installation somehow.


-- 
Bo Berglund
Developer in Sweden


From lazarus at mfriebe.de  Fri Apr  9 00:46:53 2021
From: lazarus at mfriebe.de (Martin Frb)
Date: Fri, 9 Apr 2021 00:46:53 +0200
Subject: [Lazarus] How to reduce size of lazarus itself?
In-Reply-To: <gosu6gpbs72d4mckedre6q4imc2c2pmc74@4ax.com>
References: <gosu6gpbs72d4mckedre6q4imc2c2pmc74@4ax.com>
Message-ID: <bdb810cf-57a9-7c60-f45a-45a7718c840d@mfriebe.de>

On 08/04/2021 23:24, Bo Berglund via lazarus wrote:
> I just checked out 2.0.12 on a RaspberryPi4 and built it using my existing fpc
> 3.2.0.
> The size of the executable is 271,368,224 bytes, which reduces to 30,127,876
> after using strip -s on it (takes away all the symbols).
>
> Since I am never ever going to be debugging lazarus itself, is there some
> setting I can use to NOT include the symbols in the first place?
> I want a lean and fast binary...
>
> Obviously since Lazarus rebuilds itself when packages are installed in the IDE,
> this setting must be part of the installation somehow.
>
>
Settings are taken from Tools > configure build lazarus.

Put
-O3 -g-

in there.

From bo.berglund at gmail.com  Fri Apr  9 07:51:35 2021
From: bo.berglund at gmail.com (Bo Berglund)
Date: Fri, 09 Apr 2021 07:51:35 +0200
Subject: [Lazarus] How to reduce size of lazarus itself?
References: <gosu6gpbs72d4mckedre6q4imc2c2pmc74@4ax.com>
 <bdb810cf-57a9-7c60-f45a-45a7718c840d@mfriebe.de>
Message-ID: <f9pv6gtd5j62q100dhs608ai4uqkenovlq@4ax.com>

On Fri, 9 Apr 2021 00:46:53 +0200, Martin Frb via lazarus
<lazarus at lists.lazarus-ide.org> wrote:

>On 08/04/2021 23:24, Bo Berglund via lazarus wrote:
>> I just checked out 2.0.12 on a RaspberryPi4 and built it using my existing fpc
>> 3.2.0.
>> The size of the executable is 271,368,224 bytes, which reduces to 30,127,876
>> after using strip -s on it (takes away all the symbols).
>>
>> Since I am never ever going to be debugging lazarus itself, is there some
>> setting I can use to NOT include the symbols in the first place?
>> I want a lean and fast binary...
>>
>> Obviously since Lazarus rebuilds itself when packages are installed in the IDE,
>> this setting must be part of the installation somehow.
>>
>>
>Settings are taken from Tools > configure build lazarus.
>
>Put
>-O3 -g-
>
>in there.

So I did this on my RPi4 and it worked fine, the executable is now not in need
of strip -s anymore.

But when I tried to do the same on my Windows Lazarus 2.0.8 it resulted in
Lazarus now starting up with ONLY the code editor window and the top Lazarus bar
visible!
All of the other windows I have adjusted around the code editor are gone!
No more Object inspector, Messages, Project Inspector, Code Explorer...

How come they disappeared?

In RPi4 I did this in a newly installed Lazarus where I have not yet opened a
project whereas on the Windows 2.0.8 I did it in Lazarus being in use with a
project loaded (which Lazarus seems always to do).


-- 
Bo Berglund
Developer in Sweden


From fjf.vanleeuwen at quicknet.nl  Fri Apr  9 12:36:54 2021
From: fjf.vanleeuwen at quicknet.nl (frans)
Date: Fri, 9 Apr 2021 12:36:54 +0200
Subject: [Lazarus] Lazbuild gives error
Message-ID: <cd5e4f2e-5932-13bd-f74c-5b751c138826@quicknet.nl>

Hi,

After updated my SVN lazarus directory I want to rebuild lazarus using 
lazbuild --build-all. But lazbuild gives the error *(lazarus) invalid 
lazarus directory "C:\lazarus": directory not found*.
The message is correct, I don't have a C:\lazarus directory. But why is 
lazbuild searching for that directory? My SVN directory is 
D:\SVN\LAZARUS and my OS is Windows10.

-- 
mvg
Frans van Leeuwen
M 06-51695390



-- 
Deze e-mail is gecontroleerd op virussen door AVG.
http://www.avg.com
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From bo.berglund at gmail.com  Fri Apr  9 20:53:32 2021
From: bo.berglund at gmail.com (Bo Berglund)
Date: Fri, 09 Apr 2021 20:53:32 +0200
Subject: [Lazarus] How to reduce size of lazarus itself?
References: <gosu6gpbs72d4mckedre6q4imc2c2pmc74@4ax.com>
 <bdb810cf-57a9-7c60-f45a-45a7718c840d@mfriebe.de>
 <f9pv6gtd5j62q100dhs608ai4uqkenovlq@4ax.com>
Message-ID: <vi817g50t6cein9l40kr383if8ghu030jv@4ax.com>

On Fri, 09 Apr 2021 07:51:35 +0200, Bo Berglund via lazarus
<lazarus at lists.lazarus-ide.org> wrote:

>On Fri, 9 Apr 2021 00:46:53 +0200, Martin Frb via lazarus
><lazarus at lists.lazarus-ide.org> wrote:
>
>>On 08/04/2021 23:24, Bo Berglund via lazarus wrote:
>>> I just checked out 2.0.12 on a RaspberryPi4 and built it using my existing fpc
>>> 3.2.0.
>>> The size of the executable is 271,368,224 bytes, which reduces to 30,127,876
>>> after using strip -s on it (takes away all the symbols).
>>>
>>> Since I am never ever going to be debugging lazarus itself, is there some
>>> setting I can use to NOT include the symbols in the first place?
>>> I want a lean and fast binary...
>>>
>>> Obviously since Lazarus rebuilds itself when packages are installed in the IDE,
>>> this setting must be part of the installation somehow.
>>>
>>>
>>Settings are taken from Tools > configure build lazarus.
>>
>>Put
>>-O3 -g-
>>
>>in there.
>
>So I did this on my RPi4 and it worked fine, the executable is now not in need
>of strip -s anymore.
>
>But when I tried to do the same on my Windows Lazarus 2.0.8 it resulted in
>Lazarus now starting up with ONLY the code editor window and the top Lazarus bar
>visible!
>All of the other windows I have adjusted around the code editor are gone!
>No more Object inspector, Messages, Project Inspector, Code Explorer...
>
>How come they disappeared?
>
>In RPi4 I did this in a newly installed Lazarus where I have not yet opened a
>project whereas on the Windows 2.0.8 I did it in Lazarus being in use with a
>project loaded (which Lazarus seems always to do).
>

Luckily I have started making backups of the files in the pcp directory so I
could restore the environmentoptions.xml file from the backup and now the
display is OK.


-- 
Bo Berglund
Developer in Sweden


From lazarus at mfriebe.de  Fri Apr  9 21:18:02 2021
From: lazarus at mfriebe.de (Martin Frb)
Date: Fri, 9 Apr 2021 21:18:02 +0200
Subject: [Lazarus] How to reduce size of lazarus itself?
In-Reply-To: <vi817g50t6cein9l40kr383if8ghu030jv@4ax.com>
References: <gosu6gpbs72d4mckedre6q4imc2c2pmc74@4ax.com>
 <bdb810cf-57a9-7c60-f45a-45a7718c840d@mfriebe.de>
 <f9pv6gtd5j62q100dhs608ai4uqkenovlq@4ax.com>
 <vi817g50t6cein9l40kr383if8ghu030jv@4ax.com>
Message-ID: <b2634aeb-662b-df55-a271-649e4b221c04@mfriebe.de>

On 09/04/2021 20:53, Bo Berglund via lazarus wrote:
> On Fri, 09 Apr 2021 07:51:35 +0200, Bo Berglund via lazarus
> <lazarus at lists.lazarus-ide.org> wrote:
>
>
>> But when I tried to do the same on my Windows Lazarus 2.0.8 it resulted in
>> Lazarus now starting up with ONLY the code editor window and the top Lazarus bar
>> visible!
>> All of the other windows I have adjusted around the code editor are gone!
>> No more Object inspector, Messages, Project Inspector, Code Explorer...
>>
>> How come they disappeared?
>>
No idea.
None of the options should affect the config.

Maybe -O3 triggers a bug, or is buggy. Try with -O2 or -O1 instead. Or 
try with fpc 3.2.2.

The -g- is the main factor in getting rid of the debug info.
The -O* is more about execution speed.

Mind I have not checked, but I believe the following should also work 
(in case those options are enabled elsewhere)
-CR-r-i-o-t-   -Sa-
and
  -Si



From jean.suzineau at wanadoo.fr  Sat Apr 10 01:29:05 2021
From: jean.suzineau at wanadoo.fr (Jean SUZINEAU)
Date: Sat, 10 Apr 2021 01:29:05 +0200
Subject: [Lazarus] Viewing config data in a tree style
In-Reply-To: <si7u6gtnfcn5vo29sgsqlf93elmtjnm5h2@4ax.com>
References: <si7u6gtnfcn5vo29sgsqlf93elmtjnm5h2@4ax.com>
Message-ID: <737bb199-b002-890b-f26f-319d53bfa4e0@wanadoo.fr>

In response to James Richter on fpc mailing list, I made this small 
example for displaying an selecting files in a tree. (written on Ubuntu 
and tested on Windows)

https://github.com/jsuzineau/pascal_o_r_mapping/tree/TjsDataContexte/tools/FileTree

In your case, maybe  your configuration could be converted to a JSON file ?

https://wiki.freepascal.org/fcl-json



From bo.berglund at gmail.com  Sun Apr 11 11:29:36 2021
From: bo.berglund at gmail.com (Bo Berglund)
Date: Sun, 11 Apr 2021 11:29:36 +0200
Subject: [Lazarus] AutoSave does not save project file...
Message-ID: <d2g57ghi4p7kufkukb9jpqe7nmco9i2450@4ax.com>

I have installed AutoSave from the OnlinePackageManager on all of my numerous
Lazarus installations and in general it works well.
I started to do this following several Lazarus crashes where I lost modified
code and had to try restoring from memory...

However, when I write console (simple program) applications I have noted that
AutoSave does not save the lpr file! And when looking closely the lpi file in
GUI apps is also not saved.

Since lpr is the only file in simple programs AutoSave does not help from
disaster if a crash happens.
Is there a way to configure or modify AutoSave so it also saves the main project
files?


-- 
Bo Berglund
Developer in Sweden


From bo.berglund at gmail.com  Sun Apr 11 21:04:53 2021
From: bo.berglund at gmail.com (Bo Berglund)
Date: Sun, 11 Apr 2021 21:04:53 +0200
Subject: [Lazarus] AutoSave does not save project file...
References: <d2g57ghi4p7kufkukb9jpqe7nmco9i2450@4ax.com>
Message-ID: <puh67gl38rlqu7bg1crdi4ck8etr0v86ip@4ax.com>

On Sun, 11 Apr 2021 11:29:36 +0200, Bo Berglund via lazarus
<lazarus at lists.lazarus-ide.org> wrote:

>Is there a way to configure or modify AutoSave so it also saves the main project
>files?

I looked at the Autosave sources on github and found this in the save timer:

procedure TAutoSave.OnTimer(Sender: TObject);
begin
  if Settings = nil then
  begin
    if LazarusIDE <> nil then //wait until IDE startup
    begin
      Settings :=
TSettings.Create(AppendPathDelim(LazarusIDE.GetPrimaryConfigPath) +
cAutoSaveConfigFile);
      FTimer.StopTimer;
      FTimer.Interval := Settings.AutoSaveInteval*1000;
      FTimer.StartTimer;
    end;
  end
  else
  begin
    if Settings.EnableAutoSave then
      LazarusIDE.DoSaveAll([sfDoNotSaveVirtualFiles, sfCanAbort,
sfQuietUnitCheck]);
  end;
end;

So it calls LazarusIDE.DoSaveAll, which means that somehow whan DoSaveAll
Lazarus itself fails to save the project file itself....

Can this be fixed?


-- 
Bo Berglund
Developer in Sweden


From editor at blaisepascal.eu  Mon Apr 19 22:38:01 2021
From: editor at blaisepascal.eu (editor at blaisepascal.eu)
Date: Mon, 19 Apr 2021 22:38:01 +0200
Subject: [Lazarus] OPM Error CEF4Delphi
Message-ID: <003701d7355b$e46e02f0$ad4a08d0$@blaisepascal.eu>

Because of an article in our Blaise Pascal Magazine from Michael van Canneyt I tried to use the OPM.

I found that when I use the installer for the CEF4Delphi package something is not working correctly:

I use Lazarus 2.0.12 and /or the trunk version. In both is the same Error:

If you try to install CEF4Delphi by the OPM and click the install button – drop down menu

there are two options from repository and from external source.

If you choose external source you will get an error message

“None of the checked repository packages are available.”


DETLEF D. OVERBEEK  

WITH KIND REGARDS, MED VENLIG HILSEN, MET VRIENDELIJKE GROET, CORDIALEMENT, CORDIALI SALUTI, 
LE SALUDA ATENTAMENTE,  MIT FREUNDLICHEN GRÜSSEN, С ИСКРЕННИМ УВАЖЕНИЕМ

 

CONTACT: MOBILE PHONE: +31 (0) 6  21 23 62 68 / SKYPE: DETLEF.OVERBEEK 





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From getmem1 at gmail.com  Tue Apr 20 09:48:56 2021
From: getmem1 at gmail.com (=?UTF-8?B?QmFsw6F6cyBTesOpa2VseQ==?=)
Date: Tue, 20 Apr 2021 10:48:56 +0300
Subject: [Lazarus] OPM Error CEF4Delphi
In-Reply-To: <003701d7355b$e46e02f0$ad4a08d0$@blaisepascal.eu>
References: <003701d7355b$e46e02f0$ad4a08d0$@blaisepascal.eu>
Message-ID: <CAK1Bw23ST36pkuM3-uZieonXNj9UNT0ap0k+-xDmkMyt=wZEEw@mail.gmail.com>

 Hi Detlef,

Because of an article in our Blaise Pascal Magazine from Michael van
> Canneyt I tried to use the OPM.
>
> I found that when I use the installer for the CEF4Delphi package something
> is not working correctly:
>
> I use Lazarus 2.0.12 and /or the trunk version. In both is the same Error:
>
> If you try to install CEF4Delphi by the OPM and click the install button –
> drop down menu
>
> there are two options from repository and from external source.
>
> If you choose external source you will get an error message
>
> “None of the checked repository packages are available.”
>

External repositories are disabled by default, because users did not like
the idea that OPM connects to various external sites.
To enable it please go to OPM->Options->General->Check for package updates,
then change from "Never" to something else.

I also updated the central repository with has the latest version of
CEF4Delphi 90.5.4.0, now you can install directly from there.

Thanks for the feedback!

regards,
Balázs
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From editor at blaisepascal.eu  Tue Apr 20 09:51:53 2021
From: editor at blaisepascal.eu (editor at blaisepascal.eu)
Date: Tue, 20 Apr 2021 09:51:53 +0200
Subject: [Lazarus] lazarus Digest, Vol 159, Issue 8
In-Reply-To: <mailman.5494.1618904950.6219.lazarus@lists.lazarus-ide.org>
References: <mailman.5494.1618904950.6219.lazarus@lists.lazarus-ide.org>
Message-ID: <00a701d735ba$082f5d70$188e1850$@blaisepascal.eu>

Thank you for your answer:
however I forgot to tell you that I did change that to every few minutes and even this morning it still does not work.


DETLEF D. OVERBEEK  
WITH KIND REGARDS, MED VENLIG HILSEN, MET VRIENDELIJKE GROET, CORDIALEMENT, CORDIALI SALUTI, 
LE SALUDA ATENTAMENTE,  MIT FREUNDLICHEN GRÜSSEN, С ИСКРЕННИМ УВАЖЕНИЕМ

CONTACT: MOBILE PHONE: +31 (0) 6  21 23 62 68 / SKYPE: DETLEF.OVERBEEK 


CELL PHONE: +31 (0) 6  21 23 62 68    /   SKYPE: DETLEF.OVERBEEK  
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OR POSTAL ADDRESS WITH UNRELATED THIRD PARTIES. 


-----Original Message-----
From: lazarus [mailto:lazarus-bounces at lists.lazarus-ide.org] On Behalf Of lazarus-request at lists.lazarus-ide.org
Sent: dinsdag 20 april 2021 09:49
To: lazarus at lists.lazarus-ide.org
Subject: lazarus Digest, Vol 159, Issue 8

Send lazarus mailing list submissions to
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Today's Topics:

   1. OPM Error CEF4Delphi (editor at blaisepascal.eu)
   2. Re: OPM Error CEF4Delphi (Balázs Székely)


----------------------------------------------------------------------

Message: 1
Date: Mon, 19 Apr 2021 22:38:01 +0200
From: <editor at blaisepascal.eu>
To: <lazarus at lists.lazarus.freepascal.org>
Subject: [Lazarus] OPM Error CEF4Delphi
Message-ID: <003701d7355b$e46e02f0$ad4a08d0$@blaisepascal.eu>
Content-Type: text/plain; charset="utf-8"

Because of an article in our Blaise Pascal Magazine from Michael van Canneyt I tried to use the OPM.

I found that when I use the installer for the CEF4Delphi package something is not working correctly:

I use Lazarus 2.0.12 and /or the trunk version. In both is the same Error:

If you try to install CEF4Delphi by the OPM and click the install button – drop down menu

there are two options from repository and from external source.

If you choose external source you will get an error message

“None of the checked repository packages are available.”


DETLEF D. OVERBEEK  

WITH KIND REGARDS, MED VENLIG HILSEN, MET VRIENDELIJKE GROET, CORDIALEMENT, CORDIALI SALUTI, LE SALUDA ATENTAMENTE,  MIT FREUNDLICHEN GRÜSSEN, С ИСКРЕННИМ УВАЖЕНИЕМ

 

CONTACT: MOBILE PHONE: +31 (0) 6  21 23 62 68 / SKYPE: DETLEF.OVERBEEK 





CELL PHONE: +31 (0) 6  21 23 62 68    /   SKYPE: DETLEF.OVERBEEK  
EDELSTENENBAAN 21, 3402 XA IJSSELSTEIN   /   NETHERLANDS
 <http://www.blaisepascalmagazine.eu/> www.BlaisePascalMagazine.eu

BLAISE PASCAL MAGAZINE WILL NOT SELL OR SHARE YOUR EMAIL 

OR POSTAL ADDRESS WITH UNRELATED THIRD PARTIES. 

 

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Message: 2
Date: Tue, 20 Apr 2021 10:48:56 +0300
From: Balázs Székely <getmem1 at gmail.com>
To: editor at blaisepascal.eu,  Lazarus mailing list
	<lazarus at lists.lazarus-ide.org>
Subject: Re: [Lazarus] OPM Error CEF4Delphi
Message-ID:
	<CAK1Bw23ST36pkuM3-uZieonXNj9UNT0ap0k+-xDmkMyt=wZEEw at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

 Hi Detlef,

Because of an article in our Blaise Pascal Magazine from Michael van
> Canneyt I tried to use the OPM.
>
> I found that when I use the installer for the CEF4Delphi package 
> something is not working correctly:
>
> I use Lazarus 2.0.12 and /or the trunk version. In both is the same Error:
>
> If you try to install CEF4Delphi by the OPM and click the install 
> button – drop down menu
>
> there are two options from repository and from external source.
>
> If you choose external source you will get an error message
>
> “None of the checked repository packages are available.”
>

External repositories are disabled by default, because users did not like the idea that OPM connects to various external sites.
To enable it please go to OPM->Options->General->Check for package updates, then change from "Never" to something else.

I also updated the central repository with has the latest version of CEF4Delphi 90.5.4.0, now you can install directly from there.

Thanks for the feedback!

regards,
Balázs
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------------------------------

Subject: Digest Footer

--
_______________________________________________
lazarus mailing list
lazarus at lists.lazarus-ide.org
https://lists.lazarus-ide.org/listinfo/lazarus


------------------------------

End of lazarus Digest, Vol 159, Issue 8
***************************************

From jmlandmesser at gmx.de  Tue Apr 20 11:56:28 2021
From: jmlandmesser at gmx.de (John Landmesser)
Date: Tue, 20 Apr 2021 11:56:28 +0200
Subject: [Lazarus] lazarus Digest, Vol 159, Issue 8
In-Reply-To: <00a701d735ba$082f5d70$188e1850$@blaisepascal.eu>
References: <mailman.5494.1618904950.6219.lazarus@lists.lazarus-ide.org>
 <00a701d735ba$082f5d70$188e1850$@blaisepascal.eu>
Message-ID: <e2bce328-c0d3-d54d-6969-49e588a49bb7@gmx.de>

Am 20.04.21 um 09:51 schrieb Detlef Overbeek via lazarus:
> Thank you for your answer:
> however I forgot to tell you that I did change that to every few minutes and even this morning it still does not work.

I could compile and install this  package on Manjaro Linux:

Lazarus 2.1.0 r63838M FPC 3.3.1 x86_64-linux-gtk2

Perhaps try a new ~/.lazarus profile?

John


From michael at freepascal.org  Tue Apr 20 14:20:34 2021
From: michael at freepascal.org (Michael Van Canneyt)
Date: Tue, 20 Apr 2021 14:20:34 +0200 (CEST)
Subject: [Lazarus] Mustache templates implementation
Message-ID: <alpine.DEB.2.22.394.2104201339460.260987@home>


Hello ,

For my job I needed a Mustache templates library in pascal.

Since dmustache (part of mORMot) fails the official mustache tests and did not work
on the platform I needed it for, I wrote my own implementation.

The result has been committed to packages/fcl-mustache, in case someone else
has a need for it.

Basic Features:
- TMustache Component, can be dropped on a form.
- Compiles the template, so repeated output should be fast.
- Passes all official testcases (including weird whitespace rules).
- JSON data input by default.
- Output easily configurable.

Extra:
- Integration with FPExprPars engine for expressions: {{[age + 2]}} will work.
- You can use datasets as source of data.
- Written to be easily extendable with other features.
- Unit tested.

Demos available, there is a complete usable command-line program that has all features
enabled.

Enjoy,

Michael.

From editor at blaisepascal.eu  Tue Apr 20 22:49:50 2021
From: editor at blaisepascal.eu (editor at blaisepascal.eu)
Date: Tue, 20 Apr 2021 22:49:50 +0200
Subject: [Lazarus] Installing CEF4Delphi
Message-ID: <003801d73626$b5589ea0$2009dbe0$@blaisepascal.eu>

I have installed an svn version of lazarus and tried that one.
I also chose the options menu. I set it to “Every few minutes”. Nothing else was changed.
After that I wanted to install. I had the opportunity to

The reaction with External repository was after several tries that it could be installed.
Whilst before that it was said nothing was available.
Now it says dependency “dcpcrypt.lpk” not found
Cannot install package.
After that I tried again and did not do any typing I was doing in this email.
Now it Ran And I was able to install it.
Lesson 1: It’s not in version 2.0.12 Mattias told me it will take a while before the new stable version will arrive.
Lesson2: Do not type during the installation process.

I tell you this because I am making an update of the article from Michael Canneyt


DETLEF D. OVERBEEK  
WITH KIND REGARDS, MED VENLIG HILSEN, MET VRIENDELIJKE GROET, CORDIALEMENT, CORDIALI SALUTI, 
LE SALUDA ATENTAMENTE,  MIT FREUNDLICHEN GRÜSSEN, С ИСКРЕННИМ УВАЖЕНИЕМ

CONTACT: MOBILE PHONE: +31 (0) 6  21 23 62 68 / SKYPE: DETLEF.OVERBEEK 


CELL PHONE: +31 (0) 6  21 23 62 68    /   SKYPE: DETLEF.OVERBEEK  
EDELSTENENBAAN 21, 3402 XA IJSSELSTEIN   /   NETHERLANDS
www.BlaisePascalMagazine.eu
BLAISE PASCAL MAGAZINE WILL NOT SELL OR SHARE YOUR EMAIL 
OR POSTAL ADDRESS WITH UNRELATED THIRD PARTIES. 

-----Original Message-----
From: lazarus [mailto:lazarus-bounces at lists.lazarus-ide.org] On Behalf Of lazarus-request at lists.lazarus-ide.org
Sent: dinsdag 20 april 2021 09:49
To: lazarus at lists.lazarus-ide.org
Subject: lazarus Digest, Vol 159, Issue 8

Send lazarus mailing list submissions to
	lazarus at lists.lazarus-ide.org

To subscribe or unsubscribe via the World Wide Web, visit
	https://lists.lazarus-ide.org/listinfo/lazarus
or, via email, send a message with subject or body 'help' to
	lazarus-request at lists.lazarus-ide.org

You can reach the person managing the list at
	lazarus-owner at lists.lazarus-ide.org

When replying, please edit your Subject line so it is more specific than "Re: Contents of lazarus digest..."


Today's Topics:

   1. OPM Error CEF4Delphi (editor at blaisepascal.eu)
   2. Re: OPM Error CEF4Delphi (Balázs Székely)


----------------------------------------------------------------------

Message: 1
Date: Mon, 19 Apr 2021 22:38:01 +0200
From: <editor at blaisepascal.eu>
To: <lazarus at lists.lazarus.freepascal.org>
Subject: [Lazarus] OPM Error CEF4Delphi
Message-ID: <003701d7355b$e46e02f0$ad4a08d0$@blaisepascal.eu>
Content-Type: text/plain; charset="utf-8"

Because of an article in our Blaise Pascal Magazine from Michael van Canneyt I tried to use the OPM.

I found that when I use the installer for the CEF4Delphi package something is not working correctly:

I use Lazarus 2.0.12 and /or the trunk version. In both is the same Error:

If you try to install CEF4Delphi by the OPM and click the install button – drop down menu

there are two options from repository and from external source.

If you choose external source you will get an error message

“None of the checked repository packages are available.”


DETLEF D. OVERBEEK  

WITH KIND REGARDS, MED VENLIG HILSEN, MET VRIENDELIJKE GROET, CORDIALEMENT, CORDIALI SALUTI, LE SALUDA ATENTAMENTE,  MIT FREUNDLICHEN GRÜSSEN, С ИСКРЕННИМ УВАЖЕНИЕМ

 

CONTACT: MOBILE PHONE: +31 (0) 6  21 23 62 68 / SKYPE: DETLEF.OVERBEEK 





CELL PHONE: +31 (0) 6  21 23 62 68    /   SKYPE: DETLEF.OVERBEEK  
EDELSTENENBAAN 21, 3402 XA IJSSELSTEIN   /   NETHERLANDS
 <http://www.blaisepascalmagazine.eu/> www.BlaisePascalMagazine.eu

BLAISE PASCAL MAGAZINE WILL NOT SELL OR SHARE YOUR EMAIL 

OR POSTAL ADDRESS WITH UNRELATED THIRD PARTIES. 

 

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------------------------------

Message: 2
Date: Tue, 20 Apr 2021 10:48:56 +0300
From: Balázs Székely <getmem1 at gmail.com>
To: editor at blaisepascal.eu,  Lazarus mailing list
	<lazarus at lists.lazarus-ide.org>
Subject: Re: [Lazarus] OPM Error CEF4Delphi
Message-ID:
	<CAK1Bw23ST36pkuM3-uZieonXNj9UNT0ap0k+-xDmkMyt=wZEEw at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

 Hi Detlef,

Because of an article in our Blaise Pascal Magazine from Michael van
> Canneyt I tried to use the OPM.
>
> I found that when I use the installer for the CEF4Delphi package 
> something is not working correctly:
>
> I use Lazarus 2.0.12 and /or the trunk version. In both is the same Error:
>
> If you try to install CEF4Delphi by the OPM and click the install 
> button – drop down menu
>
> there are two options from repository and from external source.
>
> If you choose external source you will get an error message
>
> “None of the checked repository packages are available.”
>

External repositories are disabled by default, because users did not like the idea that OPM connects to various external sites.
To enable it please go to OPM->Options->General->Check for package updates, then change from "Never" to something else.

I also updated the central repository with has the latest version of CEF4Delphi 90.5.4.0, now you can install directly from there.

Thanks for the feedback!

regards,
Balázs
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------------------------------

Subject: Digest Footer

--
_______________________________________________
lazarus mailing list
lazarus at lists.lazarus-ide.org
https://lists.lazarus-ide.org/listinfo/lazarus


------------------------------

End of lazarus Digest, Vol 159, Issue 8
***************************************

From getmem1 at gmail.com  Wed Apr 21 14:32:12 2021
From: getmem1 at gmail.com (=?UTF-8?B?QmFsw6F6cyBTesOpa2VseQ==?=)
Date: Wed, 21 Apr 2021 15:32:12 +0300
Subject: [Lazarus] Installing CEF4Delphi
In-Reply-To: <003801d73626$b5589ea0$2009dbe0$@blaisepascal.eu>
References: <003801d73626$b5589ea0$2009dbe0$@blaisepascal.eu>
Message-ID: <CAK1Bw22-tsdxh6TNY0dvzdeaN=9-pYMO7rf+v_YbO9LRszSx9g@mail.gmail.com>

>
> I have installed an svn version of lazarus and tried that one.
> I also chose the options menu. I set it to “Every few minutes”. Nothing
> else was changed.
> After that I wanted to install. I had the opportunity to
>
> The reaction with External repository was after several tries that it
> could be installed.
> Whilst before that it was said nothing was available.
> Now it says dependency “dcpcrypt.lpk” not found
> Cannot install package.
> After that I tried again and did not do any typing I was doing in this
> email.
> Now it Ran And I was able to install it.
> Lesson 1: It’s not in version 2.0.12 Mattias told me it will take a while
> before the new stable version will arrive.
> Lesson2: Do not type during the installation process.
>
> I tell you this because I am making an update of the article from Michael
> Canneyt
>

Yes, unfortunately a small bug related to openssl remained unnoticed, so
the "Install from external source" is not working properly in 2.0.12.
Thanks again for testing and for your feedback.
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From leobronstain at gmail.com  Thu Apr 22 13:38:06 2021
From: leobronstain at gmail.com (Leyba Bronstain)
Date: Thu, 22 Apr 2021 14:38:06 +0300
Subject: [Lazarus] Linux: Unknown property "ParentBackground"
Message-ID: <90d8170b-cad6-89b2-bd98-3f614461f742@gmail.com>

Hi guys

Seems to be I found the bug.

Test case:
- create new project on Windows
- put the groupbox on the form
- set to Groupbox.ParentBackgroud property value False and save project
- open project on Linux

Let's get error (see attachment):

Stream=TForm1: Root=:TForm1
Component Class: TGroupBox
Error reading GroupBox1.ParentBackground: Unknown property: 
"ParentBackground"
Stream position: 199

I think this is a bug


/-- with best regards, Zoltanleo aka Док/
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From leobronstain at gmail.com  Thu Apr 22 13:43:03 2021
From: leobronstain at gmail.com (Leyba Bronstain)
Date: Thu, 22 Apr 2021 14:43:03 +0300
Subject: [Lazarus] Linux: Unknown property "ParentBackground"
In-Reply-To: <90d8170b-cad6-89b2-bd98-3f614461f742@gmail.com>
References: <90d8170b-cad6-89b2-bd98-3f614461f742@gmail.com>
Message-ID: <72c81fec-874e-feaf-4887-5638ef064ed8@gmail.com>

I'm use fpc trunk and Lazarus trunk (rev. 65050)


Link to screenshot

https://imgur.com/RFC3Ckm

-- 
/-- with best regards, Zoltanleo aka Док/
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From leobronstain at gmail.com  Fri Apr 23 07:02:57 2021
From: leobronstain at gmail.com (Leyba Bronstain)
Date: Fri, 23 Apr 2021 08:02:57 +0300
Subject: [Lazarus]  Linux: Unknown property "ParentBackground"
In-Reply-To: <9ff3f680-1b8b-e7f3-5292-29d4b4d95f71@yandex.ru>
References: <90d8170b-cad6-89b2-bd98-3f614461f742@gmail.com>
 <9ff3f680-1b8b-e7f3-5292-29d4b4d95f71@yandex.ru>
Message-ID: <779243f5-e06f-0f05-2a4c-0b247e97cf54@gmail.com>

Solved

https://forum.lazarus.freepascal.org/index.php/topic,54283.msg403257.html#msg403257

-- 
/-- with best regards, Zoltanleo aka Док/
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From bo.berglund at gmail.com  Thu Apr 29 17:49:43 2021
From: bo.berglund at gmail.com (Bo Berglund)
Date: Thu, 29 Apr 2021 17:49:43 +0200
Subject: [Lazarus] How to save screenshot to jpg and png format files
Message-ID: <2pkl8gt1drps103b5e5evl71imk7jai0uh@4ax.com>

I have an application which can capture a regon of the desktop into an image.
It uses TBgraBitmap since it has a method for grabbing data from the screen.

So I can assign this to the clipboard and also save to a file:

var
  MyCapture : TBgraBitmap;
  Clip: TRect;
  ...
begin
  ...
  Clip := Bounds(Self.Left, Self.Top, Self.Width, Self.Height);
  MyCapture := TBgraBitmap.Create();
  MyCapture.TakeScreenShot(Clip);
  Clipboard.Assign(MyCapture.Bitmap);
  MyCapture.Bitmap.SaveToFile(ChangeFileExt(ParamStr(0), '.jpg'));
  MyCapture.Free;
  ...
end;

But the SaveToFile results in a file that is NOT a jpeg file at all...

How could I save it to a specific (known) format, like jpg or png?


-- 
Bo Berglund
Developer in Sweden


From ryansmithhe at gmail.com  Thu Apr 29 17:59:57 2021
From: ryansmithhe at gmail.com (R.Smith)
Date: Thu, 29 Apr 2021 17:59:57 +0200
Subject: [Lazarus] How to save screenshot to jpg and png format files
In-Reply-To: <2pkl8gt1drps103b5e5evl71imk7jai0uh@4ax.com>
References: <2pkl8gt1drps103b5e5evl71imk7jai0uh@4ax.com>
Message-ID: <d95de305-86fc-e0c8-3359-d387d03c0303@gmail.com>

On 2021/04/29 17:49, Bo Berglund via lazarus wrote:
> I have an application which can capture a regon of the desktop into an image.
> It uses TBgraBitmap since it has a method for grabbing data from the screen.
>
> So I can assign this to the clipboard and also save to a file:
>
> var
>    MyCapture : TBgraBitmap;
>    Clip: TRect;
>    ...
> begin
>    ...
>    Clip := Bounds(Self.Left, Self.Top, Self.Width, Self.Height);
>    MyCapture := TBgraBitmap.Create();
>    MyCapture.TakeScreenShot(Clip);
>    Clipboard.Assign(MyCapture.Bitmap);
>    MyCapture.Bitmap.SaveToFile(ChangeFileExt(ParamStr(0), '.jpg'));
>    MyCapture.Free;
>    ...
> end;
>
> But the SaveToFile results in a file that is NOT a jpeg file at all...
>
> How could I save it to a specific (known) format, like jpg or png?
>
Essentially you are asking a BGRA Bitmap to save itself to file, it is 
irrelevant whether the file ends in .jpg or .moonmission (although a 
TPicture or some custom image components may check the file extension).

What you need is to create a JPEG object, put the data in it and then 
use its JPEG-machinery to save the file.

I haven't tested this, typing from my head so may make syntax errors or 
such, but the idea is sound:

var
   jpg : TJPEGImage;

...

     jpg := TJPEGImage.Create;
     jpg.Assign(MyCapture.Bitmap);
    ... perhaps adjust the JPEG quality parameters etc.
     jpg.SaveToFIle('somefile.jpg');
     jpg.Free;

...

Note that this "jpg.SaveToFIle('somefile.jpg')" statement will ALWAYS 
save JPEG data to the file, even if the given filename ends in  .png or 
.bmp or .mooseknuckle




From pch at ap-i.net  Thu Apr 29 18:49:06 2021
From: pch at ap-i.net (Patrick Chevalley)
Date: Thu, 29 Apr 2021 16:49:06 +0000
Subject: [Lazarus] How to save screenshot to jpg and png format files
In-Reply-To: <2pkl8gt1drps103b5e5evl71imk7jai0uh@4ax.com>
References: <2pkl8gt1drps103b5e5evl71imk7jai0uh@4ax.com>
Message-ID: <70631af63106f5d5574fb4735867e7c6@ap-i.net>

Hi,

Replace :
MyCapture.Bitmap.SaveToFile(ChangeFileExt(ParamStr(0), '.jpg'));
by :
MyCapture.SaveToFile(ChangeFileExt(ParamStr(0), '.jpg'));

This work because Bgrabitmap set automatically the image writer based on the extension. 

Patrick


29 avril 2021 17:49 "Bo Berglund via lazarus" <lazarus at lists.lazarus-ide.org> a écrit:

> I have an application which can capture a regon of the desktop into an image.
> It uses TBgraBitmap since it has a method for grabbing data from the screen.
> 
> So I can assign this to the clipboard and also save to a file:
> 
> var
> MyCapture : TBgraBitmap;
> Clip: TRect;
> ...
> begin
> ...
> Clip := Bounds(Self.Left, Self.Top, Self.Width, Self.Height);
> MyCapture := TBgraBitmap.Create();
> MyCapture.TakeScreenShot(Clip);
> Clipboard.Assign(MyCapture.Bitmap);
> MyCapture.Bitmap.SaveToFile(ChangeFileExt(ParamStr(0), '.jpg'));
> MyCapture.Free;
> ...
> end;
> 
> But the SaveToFile results in a file that is NOT a jpeg file at all...
> 
> How could I save it to a specific (known) format, like jpg or png?
> 
> -- 
> Bo Berglund
> Developer in Sweden
> 
> -- 
> _______________________________________________
> lazarus mailing list
> lazarus at lists.lazarus-ide.org
> https://lists.lazarus-ide.org/listinfo/lazarus

From bo.berglund at gmail.com  Fri Apr 30 10:17:19 2021
From: bo.berglund at gmail.com (Bo Berglund)
Date: Fri, 30 Apr 2021 10:17:19 +0200
Subject: [Lazarus] How to save screenshot to jpg and png format files
References: <2pkl8gt1drps103b5e5evl71imk7jai0uh@4ax.com>
 <70631af63106f5d5574fb4735867e7c6@ap-i.net>
Message-ID: <u2fn8g1s6s8gv91noi1fr1nacjjvgkgiqh@4ax.com>

On Thu, 29 Apr 2021 16:49:06 +0000, Patrick Chevalley via lazarus
<lazarus at lists.lazarus-ide.org> wrote:

>
>Replace :
>MyCapture.Bitmap.SaveToFile(ChangeFileExt(ParamStr(0), '.jpg'));
>by :
>MyCapture.SaveToFile(ChangeFileExt(ParamStr(0), '.jpg'));
>
>This work because Bgrabitmap set automatically the image writer based on the extension. 
>

Correct!
I could remove *all* the extra code I had added to create jpg, png and bmp
containers. Instead I could save directly from the MyCapture object, which has
built-in magic to save files correctly based on the commonly used extesnions in
the file name.

Problem solved, thanks!


-- 
Bo Berglund
Developer in Sweden