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Archive for the ‘Delphi 3’ Category

“Don’t access VCL from a background thread” – how to demo that?

Posted by jpluimers on 2018/07/11

$When accessing the VCL from multiple threads at the same time: adopted from ...\DEMOS\THREADS\THRDDEMO.DPR$

When accessing the VCL from multiple threads at the same time: adopted from …\DEMOS\THREADS\THRDDEMO.DPR

Great question a while ago:

[WayBack] “Don’t access VCL from a background thread” – how to demo that? – Primož Gabrijelčič – Google+

For me, the ultimate way why not to access the VCL from a background thread is the precursor of the official threads demo that ships from Delphi 2 to Delphi XE6 in ...DEMOS\THREADS\THRDDEMO.DPR. where you’d think the thread isolation would be in ...DEMOS\THREADS\ThSort.pas but actually is in ...DEMOS\THREADS\SortThds.pas.

The first public showing of that demo did not include main thread protection. It originates from a session at the the 1995 Borland Developers Conference where Ray Konopka showed the below code from Bob Ainsbury.

That session reminded why this joke [WayBack] Via the EKON20 sessions… – Jeroen Wiert Pluimers – Google+ was so funny: “When Ray Konopka enters the room you have a Raize condition.“.

The question above also made me find back this reference to BorCon95 in San Diego:

Read the rest of this entry »

Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi 10.2 Tokyo (Godzilla), Delphi 2, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 3, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi 8, Delphi x64, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 2 Comments »

Delphi: playing Chimes.wav as an external file or embedded WAVE resource in Delphi XE5.

Posted by jpluimers on 2018/01/10

As a by-effect, this article seems to one of the few that shows where Delphi uses the .dres file extension introduced around Delphi XE.

Recently I had to play some notification sounds in a Windows Delphi application where the application deployment should be as easy as possible: preferable copying the EXE around.

Playing a sound file seems easy, especially if it is a [WayBack] WAV file: just use the [WayBack] PlaySound or the (older) [WayBack] sndPlaySound API functions.

But if you start searching on the internet, you see lots of curious implementations for playing WAV resources through sndPlaySound.

The actual implementation is really really easy though, just make sure you follow the steps right and nothing can go wrong.

[WayBack] The full source code is on my BeSharp.net repository, here is how to to it step by step:

The steps depend on the MMSystem unit, so most of the code translates back to [WayBack] Turbo Pascal for Windows (yes, the 16-bit Pascal days when the MMSystem unit was introduced) with the exception of the SND_SENTRY flag.

The thing that more recent Delphi versions made a lot easier is embedding WAV files as WAVE resources, more on that further on. Read the rest of this entry »

Posted in Borland Pascal, Delphi, Delphi 2, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 3, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Development, Pascal, Software Development, Turbo Pascal | Leave a Comment »

BorCon 97, 20 years ago, Star Wars, 40 years ago

Posted by jpluimers on 2017/07/13

Marco Cantu (right) and Jeroen Pluimers (left) in 1997

The BorCon 97 opening – today 20 years ago – was so much fun: the a Star Wars like opening crawl about a tiny company fighting the – then regarded – Evil Empire called Microsoft.

It was back in the days when lots of new things in the Delphi world were happening: Delphi 2 – the first 32-bit version – came out half a year before and the upcoming Delphi 3 was going to be a game changer as well. New features were rock solid and sales were booming.

Personally, I was much slimmer (yes, that’s me in the Tie-Dye), and could do a pre-conference tutorial on CORBA and VisiBroker (The ORB by Visigenic which was about to be acquired by Borland – which now is owned by Micro Focus only after spinning of the CodeGear which got acquired by Embarcadero that is now owned by Idera which feels like the Inprise story all over again).

I got triggered to this after watching the Opening Night Excitation episode 194 of the Big Bang Theory:

Read the rest of this entry »

Posted in Delphi, Delphi 2, Delphi 3, Development, Software Development | Leave a Comment »

MarcoDelphiBooks on GitHub

Posted by jpluimers on 2017/07/04

Just in case I need any of them: now in chronological order.

MarcoDelphiBooks – http://www.marcocantu.com

ObjectPascalHandbook

MasteringDelphi3

MasteringDelphi4

MasteringDelphi5

MasteringDelphi6

MasteringDelphi7

MasteringDelphi2005

Delphi2007Handbook

Delphi2009Handbook

Delphi2010Handbook

DelphiXEHandbook

Source: MarcoDelphiBooks

–jeroen

Posted in Delphi, Delphi 2005, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 3, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi XE, Development, Software Development | Leave a Comment »

The curse of the Project.res file.

Posted by jpluimers on 2016/11/29

A long time ago, Lars Fosdal wrote this on the Delphi G+ group:

It really is beyond me why there is no Project.rc file which includes

Project.version.rc

Project.icon.rc

Project.themes.rc

Project.manifest.xml

and so forth.

That way, the .res file would be a compile-time thing (or even a thing of the past) – and the resource linker would assemble the various bits from their individual sources.

It has been an issue forever. Vincent Parrett correctly commented that if you clean out too much out of the Project.res file, the IDE gets confused:

The only thing it is used for is version info and the mainicon (the IDE gets confused if don’t do that).

In my own experience, this isn’t the case for all Delphi versions, but I forgot which versions suffer and which don’t. I think the IDE theming issue omitting the Application word in the .dpr is related.

Like many of the G+ commenters, I’ve switched to script based resources for my own projects a long time ago. That’s also the reason why I forgot: this approach just works for any Delphi version.

This post is a reminder to self to see if the IDE has finally refrained from doing Project.res handling itself.

–jeroen

Source: The curse of the Project.res file…

Some related posts:

Posted in Delphi, Delphi 1, Delphi 10 Seattle, Delphi 2, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 3, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 5 Comments »

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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Delphi 3’ Category

“Don’t access VCL from a background thread” – how to demo that?

Delphi: playing Chimes.wav as an external file or embedded WAVE resource in Delphi XE5.

BorCon 97, 20 years ago, Star Wars, 40 years ago

MarcoDelphiBooks on GitHub

The curse of the Project.res file.

The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

Subscribe

Archives

Recent Comments

Recent Posts

Blog Stats

Meta title

Tag Cloud Title

Top Clicks

Top Posts

My badges

Twitter Updates

My Flickr Stream

Pages

All categories

Email Subscription

Archive for the ‘Delphi 3’ Category

“Don’t access VCL from a background thread” – how to demo that?

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Delphi: playing Chimes.wav as an external file or embedded WAVE resource in Delphi XE5.

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BorCon 97, 20 years ago, Star Wars, 40 years ago

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MarcoDelphiBooks on GitHub

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The curse of the Project.res file.

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