The Wiert Corner – irregular stream of stuff

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

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Archive for the ‘Development’ Category

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Web Audio Modem

Posted by jpluimers on 2019/07/04

Geekpr0n: [WayBack] Web Audio Modem

What do you do when you cannot copy text between computers due to lack of internet connectivity? I built a modem using the Web Audio API, allowing data transfer via audio.

It is on github at martme/webaudio-modem: Encode and decode text using the Web Audio API to enable offline data transfer between devices.

There are three demo pages at [WayBack] martinmelhus.com – Web Audio Encoder too:

–jeroen

Via:

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Posted in Development, JavaScript/ECMAScript, Scripting, Software Development | Leave a Comment »

Delphi Galileo IDE (version 8 and up): Force files to be saved as UTF8 – The Oracle at Delphi

Posted by jpluimers on 2019/07/04

Though formatting mangled the registry key to add, the article is interesting: since 2003 (C# Builder 1), you can force the IDE to always save files as UTF8 which should alleviate a lot of encoding problems.

It beats me why this isn’t the default setting, but below is an example .reg file for Delphi 8 which should be easily transformed to more recent Delphi versions:


Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Borland\BDS\2.0\Editor]
"DefaultFileFilter"="Borland.FileFilter.UTF8ToUTF8"

view raw

Delphi8-Force-IDE-to-write-files-as-UTF8.reg

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So basically (if formatting is kept), you browse to this key (replace Borland with the company for your specific Delphi version, and replace 2.0 by your IDE version):

HKEY_CURRENT_USER\Software\Borland\BDS\16.0\Editor

Then you add a new string value named DefaultFileFilter with value Borland.FileFilter.UTF8ToUTF8

More background [WayBack] The Oracle at Delphi: More IDE secrets – UTF8 and the Editor

The unmangled registry key (and more tips) was from [WayBack] BSC Polska: Hidden possibilities of Delphi 8.

Get the list of HKEY_CURRENT_USER paths for your Delphi version at Update to List-Delphi-Installed-Packages.ps1 shows HKCU/HKLM keys and doesn’t truncated fields any more.

–jeroen

Via: [WayBack] Is there any way (IDE expert?) to automatic set encoding of each PAS file in UTF-8 instead of ANSI? – Jacek Laskowski – Google+

Posted in Delphi, Development, Encoding, Software Development, UTF-8, UTF8 | 1 Comment »

[dcc32 Warning] “W1025 Unsupported language feature: ‘operator explicit'”

Posted by jpluimers on 2019/07/03

If the Delphi compiler throws a Source: "W1025 Unsupported language feature: 'operator explicit'" at you, then it is likely that you forgot this, as per Uwe Raabe:

In the project options set “C/C++ Output file generation” to “Generate DCUs only” to get rid of the warning.

Via: [WayBack] Delphi Community Edition Rant. Just installed Delphi CE from the 3rd attempt. Two times I tried to install all features – both times the installer fell… – Sergey Kasandrov – Google+

Note that the documentation still indicates that W1025 has been documented since at least Delphi 2007 ([WayBack] x1025: Unsupported language feature: ‘%s’) as a C++ header translation issue, and still is ([WayBack] X1025 Unsupported language feature: ‘%s’ (Delphi) – RAD Studio), despite other causes (like "W1025 Unsupported language feature: 'custom attribute'") fail if you have only installed the Delphi personality.

–jeroen

Posted in Delphi, Development, Software Development | 1 Comment »

Geek And Poke: The New Developer

Posted by jpluimers on 2019/07/03

Old, but still so funny because it is so true: [WayBack] Geek And Poke: The New Developer

–jeroen

via:

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Posted in Comics, Development, Documentation Development, Fun, Quotes, Software Development | Leave a Comment »

JS developers discover the char code for space is the same ASCII code for all browsers.

Posted by jpluimers on 2019/07/03

Somewhere in 2013, JavaScript developers found out the char code for space is the same ASCII code for all browsers at [WayBack] Javascript Char Codes (Key Codes) – Cambia Research

An interactive javascript key code reference for javascript developers. Includes an interative text box where you can type a key and see it’s code along with a complete lookup table.

This contrary to EBCDIC, where space can be character code 40 and 41, but not at the same time (by [WayBack] Armin Kunaschik at[WayBack] Oh mein Gott – Kristian Köhntopp – Google+).

Via

–jeroen

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Posted in Development, Fun, JavaScript/ECMAScript, Scripting, Software Development | Leave a Comment »

[RSP-19007] Form ScaleConstraints Fail – Embarcadero Technologies

Posted by jpluimers on 2019/07/02

[WayBack] [RSP-19007] Form ScaleConstraints Fail – Embarcadero Technologies

Via [WayBack] +Uwe Raabe Did Embarcadero fix TControl.ScaleConstraints() in the latest version? Do you have a patch for that? Simply changing the properties Min* agai… – Attila Kovacs – Google+

Fix: [WayBack] pisil.de/Patch.ScaleConstraints.pas 

// Workaround for TControl.ScaleConstraints bug
// Usage:
// Put "PatchScaleConstraints;" into the dpr right after "Application.Initialize;"

–jeroen

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

Interesting thread on how to approach Hi-DPI and DPI changes with FMX in Delphi

Posted by jpluimers on 2019/07/02

Interesting read: [WayBack] Is there an “How-To Guide: Upgrading Your Delphi FMX Applications To Support 4K Displays” out there ? I’ve only found VCL examples… – Stéphane Wierzbicki – Google+

–jeroen

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

As true today as it was when the book was written. “The psychology of computer programming” by @JerryWeinberg, 1971.

Posted by jpluimers on 2019/07/02

@ingorammer on Twitter [WayBack] a while back:

As true today as it was when the book was written. “The psychology of computer programming” by @JerryWeinberg, 1971:

Specifications evolve together with programs and programmers. Writing a programis a process of learning – both for the programmer and the person who commissions the program. Morover, this learning takes place in the context of a particular machine, a particular programming language, a particular programmer or programming team in a particular working environment, and a particular set of historical events that determine not just the form of the code but also what the code does!

Links:

–jeroen

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Posted in Development, Fun, History, Quotes, Software Development | Leave a Comment »

Windows: running a batch file during logon of a single or all users

Posted by jpluimers on 2019/07/01

You can automatically start processes during logon in a lot of ways (Trojans/Viruses find new ways all of the time).

The easiest way is to create a shortcut in one of the Startup folders. There are two of them: one for all the users, and one for the current user. Depending on your locale, Explorer can show a translated name, but the actual folder is named either of these:

  • "%AllUsersProfile%/Start Menu\Programs\Startup"
  • "%AppData%\Microsoft\Windows\Start Menu\Programs\Startup"

The folders do not exist at first, but are created when software starts putting shortcuts in them.

For a manual process, I created the two batch files below that create, then go to them (in both the console and explorer).

From there you can add shortcuts to things you want to run during logon.

They are based on:

I have successfully tested them in various Windows versions up until 10.

–jeroen

Batch files:

view raw

goto-startup-folder-allusers.bat

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:: https://stackoverflow.com/questions/16087694/auto-run-a-bat-script-in-windows-7-at-login
call :do "%AppData%\Microsoft\Windows\Start Menu\Programs\Startup"
goto :eof
:do
mkdir %*
pushd %*
explorer /e,.

view raw

goto-startup-folder-user.bat

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Posted in Batch-Files, Development, Power User, Scripting, Software Development, Windows | Leave a Comment »

SequoiaView Homepage

Posted by jpluimers on 2019/07/01

I thought I had scheduled a blog post about the great tool on [WayBack] SequoiaView Homepage, but didn’t. In the mean time, Paolo Buffa posted an overview with a really nice historic perspective:

Is amazing from how many years I’m using this program, and how many operating systems it managed to go thru almost unscathed, without modification.

Paolo Buffa

Source: [Archive.is] SequoiaView: a piece of history. – Data Center IT – Spiceworks

I still use it, despite it being quite old: 2002 era, written in Delphi 5. It’s beautiful in part because of its anciency, but also because it is so simple and intuitive that I still use it regularly.

The age also shows in the web page (which when writing it was still on-line): The SequiaView home page link above is actually a classic frame inside [WayBack] The SequoiaView Homepage. Back then, it was already starting to be considered obsolete to write HTML using frameset [WayBack] Framing (World Wide Web) – Wikipedia.

The SequoiaView [WayBack] Download Page even points to non-existing ftp-download URLs via counter CGI scripts:

None of them have been archived by the WayBack machine: https://web.archive.org/web//ftp://ftp.win.tue.nl/pub/home/sequoia//

To verify alternative downloads, just check these hashes:

hash command filename hash output
$ md5 Sequoia1.3Install.zip MD5 (Sequoia1.3Install.zip) = 28d356f2bafe258805794257c284a075
$ md5 Sequoia1_3XPInstall.exe MD5 (Sequoia1_3XPInstall.exe) = 142586a5cc7a0139bde8c13e5cc4d301
$ shasum Sequoia1.3Install.zip 762ab30177a7f6a0d4f173fd2442ba7b61df4c2e Sequoia1.3Install.zip
$ shasum Sequoia1_3XPInstall.exe c1db10a0f7d36adbc14b5a7a3f08fc35db1bee8b Sequoia1_3XPInstall.exe

I’ve a copy in my archive that I just use in a portable way: just copy over SequoiaView directory with these files in it:

  • Archives.col
  • DEFAULT.COL
  • Images.col
  • License.txt
  • Movies.col
  • ReleaseNotes.txt
  • Sequoia.cnt
  • Sequoia.exe
  • SEQUOIA.HLP
  • Sound.col

You can download this from gist.github.com/jpluimers/b0df9c2dba49010454ca6df406bc5f3d (ef94f1875377f4054e3a434f8942e1749f0af74a.zip).

A few things that could be fixed (if ever hopefully MagnaView open sources it: [WayBack] @jpluimers More @magnaview did you ever consider to open source the Delphi code for http://www.win.tue.nl/sequoiaview/ or give someone NDA access to fix some bugs?):

  • Access violation when re-scanning a drive
  • Option to show multiple links to the same physical file
  • Indication of more rights  needed to index a file or directory
  • Better explorer integration (via context menu)

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Posted in Delphi, Delphi 5, Development, Power User, Software Development, Windows | Leave a Comment »

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