Re: [Lazarus] how to keep out focus in a button

[hfiandor]

Dear Sandro: thanks very much. Something more learned.

 

Yours

Ing. Héctor F. Fiandor Rosario

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[Lazarus] Access violation r.51977

[Vojtěch Čihák]

Hi,
 
I got "Access Violation" window whenever I try to compile any (even an empty) 
project or package.
It comes from r.51977, while r.51976 works well.
 
Commit description (by Bart):
LazUtf8: firts attempt to rewrite Utf8CompareStr and Utf8CompareText so that 
it's results will be more
consistent with AnsiCompareStr/WideCompareStr and 
AnsiCompareTex/WideCompareText.
 
http://svn.freepascal.org/cgi-bin/viewvc.cgi/trunk/components/lazutils/lazutf8.pas?root=lazarus=51977=51976=51977
 
Lazarus 1.7 r51976M FPC 3.0.0 x86_64-linux-qt
 
Qt 4.8.7, Plasma 5.5
 
@Bart: Should I report it or do you still work on it? Will you need some more 
info (stack trace or whatever)?
 
Thanks, Blaazen.
 
 

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Re: [Lazarus] Having multiple Lazarus like GetLazarus version

[Aradeonas]

> Put a "lazarus.cfg" into the folder with lazarus.exe and write exactly
> this line into this file.
Thanks but it seems not a good way. Lazarus will lose all the setting
ans installed package and also GetLazarus version doesn't use a cfg file
as I searched so it can has a better answer.
 
Regards,
Ara
 
 

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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[Ondrej Pokorny]

The issue is solved. Now LCL includes only public domain images or 
images under the LCL license. No attribution is needed.


Ondrej

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Re: [Lazarus] SVN - SIGSEGV in external C lib when Lazarus in Debug mode (Qt)

[Krzysztof]

Tried with style plastique - same result. QPixmap log output is not from my
code but from Qt Widgetset, I'm not using Qt API directly, I'm just
assigning TLabel.Caption := Title in thread
safe Application.QueueAsyncCall. Tried also prepare demo but when copy
pasted to the empty project, everything is working fine. Different stack or
something?
I still don't understand why I get this error even when I comment
Application.QueueAsyncCall
line in bass callback SyncMetaProc. It is on top place where external Bass
callback function call my FPC routine. It worked fine for several months,
stopped after svn update and Lazarus rebuild. Weird
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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[Ondrej Pokorny]

On 23.03.2016 10:22, Graeme Geldenhuys wrote:

On 2016-03-23 08:30, Ondrej Pokorny wrote:

There are still some icons with unknown origin.

I created the following icons for the IDE:

   Source -> Comment Selection
   Source -> Uncomment Selection
   Source -> Toggle Comment in Selection
   Edit -> Uppercase Selection
   Edit -> Lowercase Selection
   Edit -> Swap case in selection
   Edit -> Sort Selection

Apply whatever licensing you see fit for those.


Thanks Graeme. I'll create a copyright file for Lazarus images as well 
and will place it there.


Ondrej

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Re: [Lazarus] Having multiple Lazarus like GetLazarus version

[Werner Pamler]

Put a "lazarus.cfg" into the folder with lazarus.exe and write exactly 
this line into this file.


Am 23.03.2016 um 18:25 schrieb Aradeonas:

Hi,
As Wiki said here http://wiki.freepascal.org/Multiple_Lazarus I should 
make a shortcut for second Lazarus like this :


--primary-config-path=lazarusconf

But I dont want to make a shortcut like this and like GetLazarus 
version I want to somehow set this config without making a new shortcut.

Any one or @Anthony can tell me how?
Regards,
Ara
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[Lazarus] SDL2 - win64

[Björn Lundin]

Hi!
Using Lasarus 1.4.4
I'm following the SDL tutorial at
http://www.freepascal-meets-sdl.net/
and get problems very fast.


looking at http://www.freepascal-meets-sdl.net/chapter-5-drawing-primitives/
I have the code starting like this


program Chapter5_SDL2;

uses SDL2;

var
i : integer;
sdlWindow1 : PSDL_Window;
sdlRenderer : PSDL_Renderer;
sdlRect1 : PSDL_Rect;
sdlPoints1 : array[0..499] of PSDL_Point;

begin

  //initilization of video subsystem
  if SDL_Init( SDL_INIT_VIDEO ) < 0 then HALT;

  sdlWindow1 := SDL_CreateWindow( 'Window1', 50, 50, 500, 500,
SDL_WINDOW_SHOWN );
  if sdlWindow1 = nil then HALT;
  writeln('1');
  sdlRenderer := SDL_CreateRenderer( sdlWindow1, -1, 0 );
  writeln('2');
  if sdlRenderer = nil then HALT;
and so on

However it crashes with runtime error 217 on line
sdlRenderer := SDL_CreateRenderer( sdlWindow1, -1, 0 );
I get '1' on the screen but not '2'



C:\bnl\svn\trunk\pascal\sdl-stuff>chapter5_sdl2.exe
1
Runtime error 217 at $07FEFD28ADAD
  $07FEFD28ADAD
  $07FEF9417F69
  $2D6E


if run from Lazarus, I get  some assembler listing

.

RaiseException
07FEFD28AD70 4881ecc800   sub$0xc8,%rsp
07FEFD28AD77 83e201   and$0x1,%edx
07FEFD28AD7A 488d05efff   lea-0x11(%rip),%rax#
0x7fefd28ad70 
07FEFD28AD81 894c2420 mov%ecx,0x20(%rsp)
07FEFD28AD85 33c9 xor%ecx,%ecx
07FEFD28AD87 4889442430   mov%rax,0x30(%rsp)
07FEFD28AD8C 89542424 mov%edx,0x24(%rsp)
07FEFD28AD90 48894c2428   mov%rcx,0x28(%rsp)
07FEFD28AD95 4d85c9   test   %r9,%r9
07FEFD28AD98 0f859a080100 jne0x7fefd29b638

07FEFD28AD9E 894c2438 mov%ecx,0x38(%rsp)
07FEFD28ADA2 488d4c2420   lea0x20(%rsp),%rcx
07FEFD28ADA7 ff15f3040400 callq  *0x404f3(%rip)#
0x7fefd2cb2a0 
07FEFD28ADAD 4881c4c800   add$0xc8,%rsp


and I have no clue where i crashes, but I presume it is in sdl2.dll
somewhere.
Downloaded the latest 64 bit for win at sdl.org (2.0.4)
searching throught the disk gives exactly 1 sdl2.dll

C:\>dir /s sdl2.dll
 Directory of C:\bnl\bin
2016-01-02  11:59 1 230 336 SDL2.dll
   1 File(s)  1 230 336 bytes
 Total Files Listed:
   1 File(s)  1 230 336 bytes
   0 Dir(s)  122 686 066 688 bytes free



Anyone has some ideas what to do.
Needless to say, google runtime error 217 gives no clear indication
on why it is complaining.

I had Lazarus 1.6 before, but downgraded because of
bug in databse interface reagrding floats.
(thread with subject "TPQConnection and float")




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Re: [Lazarus] Raspberry Pi 3 build issues

[Anthony Walter]

Seeing as how SD CARD space is a premium on the Pi you should probably
clean up after you build and install. This include doing things like this
after make install:

cd $HOME/fpc
rm -rf .svn
find packages -name units | xargs rm -rf {0}
find rtl -name units | xargs rm -rf {0}
find packages -iname "*make*" -delete
find rtl -iname "*make*" -delete
rm -rf compiler
rm -rf installer
rm -rf share

Which will free up A LOT of SD CARD space. Also an addition note, there is
no real reason (IMO) to install trunk or test revisions to root owned
folders. Usually PREFIX=$HOME/fpc or something thereof will suffice. Oh and
the complete command to generation a valid fpc.cfg (assuming install path
is $HOME/fpc) is:

$HOME/fpc/fpcmkcfg -d basepath=$HOME/fpc/lib/fpc/\$FPCVERSION
-o $HOME/fpc/bin/fpc.cfg

It should be noted that the default swap file size of Raspbian is only
100MB which combined with a possible GPU memory settings will occasionally
cause Lazarus builds to fail mysteriously.
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Re: [Lazarus] Raspberry Pi 3 build issues

[Special]

Hi, Bo,
great script. Worked excellently.
Thank You - Hans

Am 21.03.2016 um 17:28 schrieb Bo Berglund:

On Mon, 21 Mar 2016 05:53:05 +, Anthony Walter 
wrote:


Has anyone here built Lazarus from SVN sources on the Raspberry Pi 3 yet? I
keep running into various issues. This my latest issue from:

I have done so multiple times and to facilitate installation on a bare
newly installed RPi3 with Raspbian Jessie I created a shellscript file
that does all the work:

http://blog.boberglund.com/install_laz_pi.sh

- Download the file to your RPi3 home directory.
   I guess you can use wget for that...

- Then change the permissions of the file:
   chmod +x install_laz_pi.sh

- Finally start the script as user pi:
   ./install_laz_pi.sh

It will run for quite a while installing all of the build required
modules and downloading both the seed compiler, the svn sources for
fpc 3.0.0 and lazarus 1.6 releases.
Then it installs fpc seed compiler and builds the fpc 3.0.0 release
and finally uses that to build the lazarus ide.
It also creates a start menu entry for Lazarus at the end.

HTH




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[Lazarus] Having multiple Lazarus like GetLazarus version

[Aradeonas]

Hi,
 
As Wiki said here http://wiki.freepascal.org/Multiple_Lazarus I should
make a shortcut for second Lazarus like this :
> --primary-config-path=lazarusconf
But I dont want to make a shortcut like this and like GetLazarus version
I want to somehow set this config without making a new shortcut.
 
Any one or @Anthony can tell me how?
 
Regards,
Ara
 

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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[Michael Thompson]

On 23 March 2016 at 23:18,  wrote:

> thanks for that! will it work for non-GUI console only apps?


Hmm.  In order to get the LCL information, I needed to include some LCL
files...  Shouldn't be too hard to modify though and build a version that
doesn't report the LCL info...  The code was released entirely into the
public domain, so feel free to hack away :-)


hummm... "almost no change" implies that there is a change of some kind...
> can you update your original post or post another with the change or newer
> unit?
>

Sure.  I've updated that post now :-)

Changes are: Minor re-ordering of code, some additional comments and
GetCPU.  I'm away from SourceForge access right now, so I'm not entirely
sure when I made those changes...
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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[wkitty42]

On 03/23/2016 08:07 AM, Michael Thompson wrote:

Here's everything I found when I first went looking for this kind of info
http://forum.lazarus.freepascal.org/index.php/topic,13957.msg155398.html


thanks for that! will it work for non-GUI console only apps? i did see where 
someone asked about a built-in dialogue and was told one does not exist which 
seems to indicate that it will work for non-GUI apps...



(And I've been using the VersionSupport unit with almost no change since I
posted it ..)


hummm... "almost no change" implies that there is a change of some kind... can 
you update your original post or post another with the change or newer unit?


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Re: [Lazarus] Testing Rapberry Pi 3 performance

[Michael Schnell]

On 03/23/2016 03:32 PM, David Taylor wrote:


But with "only" 1 GB of memory, 64-bit may be no better than 32-bit. 
The hardware, though, is 64-bit with the advantages that brings in 
memory access speeds.  I've seen nothing of the Raspberry Pi cards 
which I use which would benefit from a 64-bit version.


I do know that with X86 the memory efficiency with 64 is a lot worse 
than with X32 and might result in speed degradation due to worse cache 
usage. I have no knowledge if this is similar with aarch64.


-Michael

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Re: [Lazarus] Testing Rapberry Pi 3 performance

[David Taylor]

On 23/03/2016 14:18, Michael Schnell wrote:

On 03/23/2016 03:00 PM, David Taylor wrote:



Using the RPi-3 is a significantly more pleasant experience than the
RPi-2, even just headless when compiling things.  Highly recommended.
I did have some minor issues with Jessie, with the serial port on the
RPi-3, and with gpsd not suto-starting.

But still no "official" 64 bit OS, yet :-(

-Michael


--


But with "only" 1 GB of memory, 64-bit may be no better than 32-bit. 
The hardware, though, is 64-bit with the advantages that brings in 
memory access speeds.  I've seen nothing of the Raspberry Pi cards which 
I use which would benefit from a 64-bit version.


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Re: [Lazarus] Testing Rapberry Pi 3 performance

[Michael Schnell]

On 03/23/2016 03:00 PM, David Taylor wrote:



Using the RPi-3 is a significantly more pleasant experience than the 
RPi-2, even just headless when compiling things.  Highly recommended.  
I did have some minor issues with Jessie, with the serial port on the 
RPi-3, and with gpsd not suto-starting.

But still no "official" 64 bit OS, yet :-(

-Michael


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Re: [Lazarus] Testing Rapberry Pi 3 performance

[David Taylor]

On 23/03/2016 10:22, Mark Morgan Lloyd wrote:

Graeme Geldenhuys wrote:

On 2016-03-23 04:56, Anthony Walter wrote:> I recorded a very brief
video of the performance of Raspberry Pi and> Lazarus is quite usable.

For a computer priced at £22, that is incredible value for money!
Istill have the original RPi - maybe it's time for an upgrade. The
workawesome as little micro-servers too. :)


The RPi2 is superior in almost every way. I've got an RPi3 here but
won't have time to exercise it for at least a few days.

[]

The RPI-2 is superior to what?

Using the RPi-3 is a significantly more pleasant experience than the 
RPi-2, even just headless when compiling things.  Highly recommended.  I 
did have some minor issues with Jessie, with the serial port on the 
RPi-3, and with gpsd not suto-starting.  I detailed those towards the 
end of this page:


  http://www.satsignal.eu/ntp/Raspberry-Pi-quickstart.html

I've not had chance to try Lazarus, though.
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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[Mark Morgan Lloyd]

Bart wrote:

On 3/23/16, Mark Morgan Lloyd  wrote:


Wandering slightly: I wonder if it would also be possible for the app to
get hold of things like the Lazarus and FPC version numbers and SVN
revisions?


Lazarus version and fpc version is no problem.

From my standard AboutDlg:


  if LazVersion = '' then LazVersion := 'Lazarus '+ LCLVersion;
  if FpcVersion = '' then FpcVersion := 'FPC ' + {$I %FPCVERSION%};


Agreed. Getting the SVN revision number- useful in particular if you're 
looking at a binary built with trunk- rather more of a problem.


I've hacked together various stuff to retrieve e.g. the build number 
(optionally) stored by ld which I'd happily contribute if anybody were 
interested.


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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[Michael Thompson]

On 23 March 2016 at 19:33, Mark Morgan Lloyd <
markmll.laza...@telemetry.co.uk> wrote:

>
> Wandering slightly: I wonder if it would also be possible for the app to
> get hold of things like the Lazarus and FPC version numbers and SVN
> revisions? I'm currently doing this by fudging paths, but it has the
> unfortunate side effect that the LCL gets rebuilt on occasion as part of
> the app project.


Here's everything I found when I first went looking for this kind of info
http://forum.lazarus.freepascal.org/index.php/topic,13957.msg155398.html
(And I've been using the VersionSupport unit with almost no change since I
posted it ..)
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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[Bart]

On 3/23/16, Mark Morgan Lloyd  wrote:

> Wandering slightly: I wonder if it would also be possible for the app to
> get hold of things like the Lazarus and FPC version numbers and SVN
> revisions?

Lazarus version and fpc version is no problem.
>From my standard AboutDlg:

  if LazVersion = '' then LazVersion := 'Lazarus '+ LCLVersion;
  if FpcVersion = '' then FpcVersion := 'FPC ' + {$I %FPCVERSION%};

Bart

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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[Mark Morgan Lloyd]

wkitt...@windstream.net wrote:

On 03/23/2016 06:11 AM, Mark Morgan Lloyd wrote:
Looking at this a different way, could the TApplication object have 
provision
(not necessarily enabled by default) for displaying a splash form 
which either

had a default set of acknowledgements embedded or could gather them from
packages etc.?


that's what i was wondering... especially since i'm likely not going to 
try to track down all icons and other similar code that is bundled in 
code that i got from somewhere (eg: lazarus) and then try to write some 
acknowledgement of them in some about screen that i generally don't 
create... if the code comes from a set of libraries that is included by 
default, there should also be some sort of automatic acknowledgement 
included as well... silk icons? tango icons? WFT? is this as bad as all 
those fonts that no one uses??? :sigh:


Displaying a splash or clickthrough while an app is starting, or an 
about box in a uniform format as part of a help menu, is rather an FAQ, 
and since the IDE doe it well hopefully it would be easy to implement.


Wandering slightly: I wonder if it would also be possible for the app to 
get hold of things like the Lazarus and FPC version numbers and SVN 
revisions? I'm currently doing this by fudging paths, but it has the 
unfortunate side effect that the LCL gets rebuilt on occasion as part of 
the app project.


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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[Ondrej Pokorny]

On 23.03.2016 11:11, Mark Morgan Lloyd wrote:
Looking at this a different way, could the TApplication object have 
provision (not necessarily enabled by default) for displaying a splash 
form which either had a default set of acknowledgements embedded or 
could gather them from packages etc.?


It's a good idea!

IMO: it doesn't belong into LCL. There are packages that don't depend on 
the LCL and should take use of it. Also, what about console applications?


1.) It belongs into FPC sources.
2.) It should be a generic list of acknowledgments (licenses). No GUI 
whatsoever.


Another thing is if package maintainers (e.g. CCR) will take this extra 
work and really implement it.


Anyway, the goal is to have and keep LCL acknowledgment-free.

Ondrej

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Re: [Lazarus] Testing Rapberry Pi 3 performance

[Mark Morgan Lloyd]

Graeme Geldenhuys wrote:

On 2016-03-23 10:22, Mark Morgan Lloyd wrote:
The RPi2 is superior in almost every way. I've got an RPi3 here but 
won't have time to exercise it for at least a few days.


My RPi 1 Model B (the original) is still ticking nicely even after so
many years of usage. At one stage I used used it as a web server, then
as a media player for over two years, running 24/7. Now I use it to test
FPC+fpGUI builds for the ARM target.


The RPi1 I've got here wasn't reliable, but it could have been a thermal 
runaway and I'm supposed to be testing it on a battery.



From what I've read online, the RPi2 and RPi3 have way more memory and

processing speed than mine. So that should be a nice welcome as a lite
desktop / development environment.


If we continue this it would be better in -other, but I've got a spare 2 
and 3 here and would quite like to explore xdmx as we've already 
discussed. Potentially, a cluster of those could replace my desktop 
systems: I think they're entirely adequate for development.


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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[wkitty42]

On 03/23/2016 06:11 AM, Mark Morgan Lloyd wrote:

Looking at this a different way, could the TApplication object have provision
(not necessarily enabled by default) for displaying a splash form which either
had a default set of acknowledgements embedded or could gather them from
packages etc.?


that's what i was wondering... especially since i'm likely not going to try to 
track down all icons and other similar code that is bundled in code that i got 
from somewhere (eg: lazarus) and then try to write some acknowledgement of them 
in some about screen that i generally don't create... if the code comes from a 
set of libraries that is included by default, there should also be some sort of 
automatic acknowledgement included as well... silk icons? tango icons? WFT? is 
this as bad as all those fonts that no one uses??? :sigh:


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Re: [Lazarus] Testing Rapberry Pi 3 performance

[Graeme Geldenhuys]

On 2016-03-23 10:22, Mark Morgan Lloyd wrote:
> The RPi2 is superior in almost every way. I've got an RPi3 here but 
> won't have time to exercise it for at least a few days.

My RPi 1 Model B (the original) is still ticking nicely even after so
many years of usage. At one stage I used used it as a web server, then
as a media player for over two years, running 24/7. Now I use it to test
FPC+fpGUI builds for the ARM target.

>From what I've read online, the RPi2 and RPi3 have way more memory and
processing speed than mine. So that should be a nice welcome as a lite
desktop / development environment.

Regards,
  - Graeme -

-- 
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My public PGP key:  http://tinyurl.com/graeme-pgp

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Re: [Lazarus] Testing Rapberry Pi 3 performance

[Mark Morgan Lloyd]

Graeme Geldenhuys wrote:

On 2016-03-23 04:56, Anthony Walter wrote:> I recorded a very brief video of the 
performance of Raspberry Pi and> Lazarus is quite usable.

For a computer priced at £22, that is incredible value for money! Istill have 
the original RPi - maybe it's time for an upgrade. The workawesome as little 
micro-servers too. :)


The RPi2 is superior in almost every way. I've got an RPi3 here but 
won't have time to exercise it for at least a few days.


The Raspberry Pi Zero can, I believe, be run as a USB slave 
(specifically, USB OTG can be enabled by a kernel patch). That opens the 
possibility of using it to implement special-purpose input peripherals: 
has anybody used FPC etc. to play with USB Gadget programming?


http://hackaday.com/2016/03/02/hack-a-ps2-keyboard-onto-your-pi-zero/
http://isticktoit.net/?p=1383

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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[Mark Morgan Lloyd]

Ondrej Pokorny wrote:

Corresponding issue report: http://mantis.freepascal.org/view.php?id=29869

Every LCL application includes icons (at least) from the famfamfam (Silk 
icon set) that are licensed under Creative Commons Attribution 2.5/3.0 
license.
As a result every LCL application that does not acknowledge them, breaks 
the CC license.
LCL is advertised as "(L)GPL licensed with static linking exception", 
which is not true because the LCL includes CC-licensed icons.


The Lazarus team will solve the issue for 1.6.2. We'll try to get a 
license exception for LCL applications. If we don't get this exception 
all CC-licensed icons will be removed from the LCL and will be replaced 
by public-domain icons.


For now, please take into consideration that your LCL application must 
acknowledge the Silk Icon Set http://www.famfamfam.com/lab/icons/silk/ .


Looking at this a different way, could the TApplication object have 
provision (not necessarily enabled by default) for displaying a splash 
form which either had a default set of acknowledgements embedded or 
could gather them from packages etc.?


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Re: [Lazarus] fpspreadsheet - automatic column width

[Roberto P.]

TOP !!

Thanks,

  Roberto

2016-03-22 17:24 GMT+01:00 Werner Pamler :

>
> Am 22.03.2016 um 16:16 schrieb Roberto P.:
>
>> To make it work well enough, I am still missing one point: is there a way
>> to detect which is the last used row in a column or the last used column in
>> a row?
>> A single cell is "not enough".
>>
> TsWorksheet.GetLastOcccupiedRowIndex, GetLastOccupiedColIndex determine
> the indexes of the last cell of the worksheet.
>
> There's also a  TsWorksheet.GetLastRowIndex, GetLastColIndex which
> consider also Row and Column records (needed for predefined row heights and
> column widths) beyond the last occupied cell. Both have an optional
> parameter "ForceCalculation" which you should set to true in your first
> call in order to initialize the cached value.
>
>
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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[Graeme Geldenhuys]

On 2016-03-23 08:30, Ondrej Pokorny wrote:
> There are still some icons with unknown origin.

I created the following icons for the IDE:

  Source -> Comment Selection
  Source -> Uncomment Selection
  Source -> Toggle Comment in Selection
  Edit -> Uppercase Selection
  Edit -> Lowercase Selection
  Edit -> Swap case in selection
  Edit -> Sort Selection

Apply whatever licensing you see fit for those.

Regards,
  - Graeme -

-- 
fpGUI Toolkit - a cross-platform GUI toolkit using Free Pascal
http://fpgui.sourceforge.net/

My public PGP key:  http://tinyurl.com/graeme-pgp

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Re: [Lazarus] LCL exports CC-licensed icons to every LCL application

[Ondrej Pokorny]

On 21.03.2016 9:54, Ondrej Pokorny wrote:
For now, please take into consideration that your LCL application must 
acknowledge the Silk Icon Set http://www.famfamfam.com/lab/icons/silk/


I replaced all Silk icons with icons from Tango in r52023. The biggest 
advantage is that the tango icons are SVG and nice PNG versions exist 
for different resolutions. So if we want to make these LCL icons 
high-DPI aware in the future, we can easily use the same icons in higher 
resultion. This wasn't possible with the Silk icons.


There are still some icons with unknown origin. I am waiting for Paul's 
answer where he got the icons from.


Ondrej

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Re: [Lazarus] Testing Rapberry Pi 3 performance

[Graeme Geldenhuys]

On 2016-03-23 04:56, Anthony Walter wrote:
> I recorded a very brief video of the performance of Raspberry Pi and
> Lazarus is quite usable.


For a computer priced at £22, that is incredible value for money! I
still have the original RPi - maybe it's time for an upgrade. The work
awesome as little micro-servers too. :)


Regards,
  - Graeme -



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Re: [Lazarus] SVN - SIGSEGV in external C lib when Lazarus in Debug mode (Qt)

[Zeljko]

On 03/22/2016 09:58 PM, Krzysztof wrote:

Hi,

I have music player based on Bass library. It can play online radio and
signal (metadata) if song in radio has changed. Code is quite old and
Bass binary is not changed. Recently I updated SVN source (I need to use
it because it has important bug fixes), rebuild Lazarus and receive
metadata stopped worked but only in Debug mode, Release is working fine.

This is output in debug mode:

TApplication.HandleException Unknown Run-Time error : 202
   Stack trace:
   $00437E5F
   $7F38A2AF6634
QObject: Cannot create children for a parent that is in a different thread.
(Parent is Oxygen::WidgetStateEngine(0x2812a90), parent's thread is
QThread(0x272ddb0), current thread is QThread(0x7f387d20)
QObject: Cannot create children for a parent that is in a different thread.
(Parent is Oxygen::WidgetStateEngine(0x28161e0), parent's thread is
QThread(0x272ddb0), current thread is QThread(0x7f387d20)
QObject: Cannot create children for a parent that is in a different thread.
(Parent is Oxygen::WidgetStateEngine(0x28161e0), parent's thread is
QThread(0x272ddb0), current thread is QThread(0x7f387d20)
QObject: Cannot create children for a parent that is in a different thread.
(Parent is Oxygen::WidgetStateEngine(0x2812a90), parent's thread is
QThread(0x272ddb0), current thread is QThread(0x7f387d20)
QObject: Cannot create children for a parent that is in a different thread.
(Parent is Oxygen::WidgetStateEngine(0x28161e0), parent's thread is
QThread(0x272ddb0), current thread is QThread(0x7f387d20)
QObject: Cannot create children for a parent that is in a different thread.
(Parent is Oxygen::WidgetStateEngine(0x28161e0), parent's thread is
QThread(0x272ddb0), current thread is QThread(0x7f387d20)
QPixmap: It is not safe to use pixmaps outside the GUI thread
QPixmap: It is not safe to use pixmaps outside the GUI thread
QPixmap: It is not safe to use pixmaps outside the GUI thread
QPixmap: It is not safe to use pixmaps outside the GUI thread
QPixmap: It is not safe to use pixmaps outside the GUI thread
QPainter::begin: Paint device returned engine == 0, type: 2
QPixmap: It is not safe to use pixmaps outside the GUI thread


1. Try to run your application with another style. eg myapplication 
-styke plastique and see if you have same problem with children creation.


2.Using QPixmap outside of main thread is a big no-no, for that purpose 
you must use QImage.


zeljko

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