RackCtls

About

RackCtls is a a collection of components with an "Hi-fi system" appearance:

<figure> <img src="RackCtls.png" title="RackCtls.png" /> <figcaption>RackCtls.png</figcaption> </figure>

• TLEDButton a button with a LED.
• TLEDButtonPanel its matching panel.
• TScrewPanel a panel with screws in its corners.
• TLEDDisplay 7-segment LED display for numerical values.
• TLEDMeter LED bar graph, Vu-meter style.

The download contains the component, an installation package and a demo application, that illustrates the features of the component.

Author

Original author: Simon Reinhardt Lazarus adaptation by: Luca Olivetti

License

From the source file:

Diese Komponenten sind Public Domain, das Urheberrecht liegt aber beim Autor.

(translation:

These components are Public Domain, the copyright however remains with the author. )

Download

The latest stable release can be found here or on Lazarus CCR.

The source repository is here.

Change Log

• Version 1.20.4 TLEDDisplay can show numbers in hex, use FPC resources for the icons
• Version 1.20.3 Fix memory leak in TLedDisplay, remove ctl3d/parentctl3d properties (removed from lazarus)
• Version 1.20.2 Fixed default color for TLedButtn/TLedButtonPanel
• Version 1.20 Initial release

Dependencies / System Requirements

• None that I know of

Status: Stable (I hope)

Issues:

• The original TButtonPanel has been renamed to TLedButtonPanel since Lazarus has already a TButtonPanel in its standard components palette
• The license is unclear to me

Installation

• Unzip the file
• Open the package RackCtlsPkg.lpk in the lazarus ide
• Click install

The RackCtls Example Application

The sample application is in the LazDemo subdirectory

• Open RackDemo.lpi
• compile
• run

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From the Free Pascal wiki, page "RackCtls", as it stood on 2019-08-25 after a change by Luca, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's Licensing page. If you have concerns about this material, message the admin.