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Lazarus and FreePascal

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  Lazarus and FreePascal "P E Schoen" <paul@pstech-inc.com> - 2016-08-23 00:50 -0400
    Re: Lazarus and FreePascal "P E Schoen" <paul@pstech-inc.com> - 2016-08-23 01:30 -0400
    Re: Lazarus and FreePascal Hans-Peter Diettrich <DrDiettrich1@aol.com> - 2016-08-23 11:14 +0200
      Re: Lazarus and FreePascal "P E Schoen" <paul@pstech-inc.com> - 2016-08-23 18:21 -0400
        Re: Lazarus and FreePascal Marco van de Voort <marcov@toad.stack.nl> - 2016-08-24 08:30 +0000
    Re: Lazarus and FreePascal Marco van de Voort <marcov@toad.stack.nl> - 2016-08-23 12:00 +0000
      Re: Lazarus and FreePascal "P E Schoen" <paul@pstech-inc.com> - 2016-08-23 17:40 -0400

#725 — Lazarus and FreePascal

Recently I discovered FreePascal and the Lazarus IDE. I was rather skeptical 
about how useful it might be as a replacement for Borland Delphi (D4Pro) 
which I have been using for over 15 years for Windows GUI apps. So yesterday 
I decided to download them and install on my new Toshiba Satellite Win10 
laptop.

I was pleasantly surprised, and I was able to convert, build and run some 
simple Delphi projects. But unfortunately I was unable to install the 
ComDrv32 serial port component I recently adopted for my legacy BTSA3 and 
Ortmaster projects,  or the SerialNG component I had been using since about 
2004. The SerialNG would not work on Win10.

So I joined the Lazarus discussion forum, and found that someone had 
provided an open source TLazSerial component. I was able to install the 
TLazSerial component and build the demo GPS Simulator. I have a USB serial 
port designed in a custom data acquisition board, and when a Ctrl-T 
character is sent, it returns a stream of 240 unique character pairs, at 
4800 characters per second, on a 57.6 kB connection. I was able to 
accomplish this with a TEST button and an OnClick handler.

http://forum.lazarus.freepascal.org/index.php/topic,20481.120.html

Here is the download page:
http://www.freepascal.org/download.var

Paul 

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#726

Here is the download page for Lazarus:
http://www.lazarus-ide.org/

Paul 

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#727

P E Schoen schrieb:

> I have a USB 
> serial port designed in a custom data acquisition board, and when a 
> Ctrl-T character is sent, it returns a stream of 240 unique character 
> pairs, at 4800 characters per second, on a 57.6 kB connection. I was 
> able to accomplish this with a TEST button and an OnClick handler.

Fine :-)

Does your entire project now run, based on Lazarus?

DoDi

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#730

"Hans-Peter Diettrich"  wrote in message 
news:e22jdpF2jopU1@mid.individual.net...

> P E Schoen schrieb:

>> I have a USB  serial port designed in a custom data acquisition board, 
>> and when a  Ctrl-T character is sent, it returns a stream of 240 unique 
>> character  pairs, at 4800 characters per second, on a 57.6 kB connection. 
>> I was  able to accomplish this with a TEST button and an OnClick handler.

> Fine :-)

> Does your entire project now run, based on Lazarus?

I have not tried that yet, and I probably won't, unless it becomes 
necessary. The BTSA and Ortmaster projects are now mature and stable, and 
won't need more than a few maintenance tweaks like the change of serial port 
component. The Ortmaster project is particularly complex due to database 
portions using BDE and QuickReports.

What I probably should do is a rewrite pretty much from the ground up. Much 
of the code is questionable and inefficient due to my learning Delphi as I 
built and enhanced the project. The BTSA project may be simple enough to 
rewrite, and I need to make better use of object based programming 
practices. I do have some of the code in separate units, but some units use 
conditional compiles based on ORT or BTSA $defines.

I plan to build a new project that will read a huge CSV text file (about 1.8 
GB), and split it into more manageable file sizes that can be converted to 
spreadsheet format with Open Office. It has a maximum of 1048576 lines with 
an ODS file of 11.2 MB. This is a database of all songs in the ASCAP 
database. It was supplied in a 288 MB zipfile.

Somehow I got interested in copyright issues and royalties and licenses for 
performing or playing copyrighted music in public or private venues. I think 
licenses and royalties mostly apply to professional musicians and DJs and 
for recording and selling music. I have recorded myself and others playing 
and singing music and have made YouTube videos of that. It's a tricky 
subject!

Paul 

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#731

On 2016-08-23, P E Schoen <paul@pstech-inc.com> wrote:
> I plan to build a new project that will read a huge CSV text file (about 1.8 
> GB), and split it into more manageable file sizes that can be converted to 
> spreadsheet format with Open Office. It has a maximum of 1048576 lines with 
> an ODS file of 11.2 MB. This is a database of all songs in the ASCAP 
> database. It was supplied in a 288 MB zipfile.

Using fpspreadsheet (in fpc/lazarus) you can churn out office files
directly, without having an office installed.  (and at least as important,
decoupling your applications from Office version)

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#728

On 2016-08-23, P E Schoen <paul@pstech-inc.com> wrote:
> Recently I discovered FreePascal and the Lazarus IDE. I was rather skeptical 
> about how useful it might be as a replacement for Borland Delphi (D4Pro) 
> which I have been using for over 15 years for Windows GUI apps. So yesterday 
> I decided to download them and install on my new Toshiba Satellite Win10 
> laptop.
>
> I was pleasantly surprised, and I was able to convert, build and run some 
> simple Delphi projects. But unfortunately I was unable to install the 
> ComDrv32 serial port component I recently adopted for my legacy BTSA3 and 
> Ortmaster projects,  or the SerialNG component I had been using since about 
> 2004. The SerialNG would not work on Win10.

What actually went wrong with comdrv32 ?

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#729

"Marco van de Voort"  wrote in message 
news:slrnnroemu.249d.marcov@toad.stack.nl...

> What actually went wrong with comdrv32 ?

I don't remember all the problems, but the compilation ran into problems 
with undefined references in some of the source files in the package. It may 
have had something to do with misunderstanding how packages and components 
work, and how to convert from Delphi to Lazarus. I may try again, but the 
TLazSerial component seems to work well enough.

Paul 

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