Component Library for Cross Platform (CLX) (pronounced clicks), is a cross-platform visual component-based framework for developing Microsoft Windows and

Linux Linux ( or ) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged as a Linux distribution, w ...

applications. It is developed by Borland for use in its Kylix, Delphi, and C++ Builder software development environment. Its aim was to replace the popular

Microsoft Foundation Classes Microsoft Foundation Class Library (MFC) is a C++ object-oriented library for developing desktop applications for Windows. MFC was introduced by Microsoft in 1992 and quickly gained widespread use. While Microsoft has introduced alternative app ...

with

Visual Component Library The Visual Component Library (VCL) is a visual component-based object-oriented framework for developing the user interface of Microsoft Windows applications. It is written in Object Pascal. History The VCL was developed by Borland for use i ...

. CLX was based on Qt by

Nokia Nokia Corporation (natively Nokia Oyj, referred to as Nokia) is a Finnish multinational telecommunications, information technology, and consumer electronics corporation, established in 1865. Nokia's main headquarters are in Espoo, Finland, i ...

. The

API An application programming interface (API) is a way for two or more computer programs to communicate with each other. It is a type of software interface, offering a service to other pieces of software. A document or standard that describes how ...

of CLX almost completely followed VCL. It was envisioned that existing applications using VCL would be recompiled with CLX. However, due to lacklustre performance on Windows, subtle differences from VCL, and bugs, it didn't become the expected successor to VCL. Commercial failure of Kylix stopped further development of CLX. In terms of

object-oriented Object-oriented programming (OOP) is a programming paradigm based on the concept of " objects", which can contain data and code. The data is in the form of fields (often known as attributes or ''properties''), and the code is in the form of p ...

approach, CLX forms an object hierarchy where the TObject class serves as the ''

base class In object-oriented programming, inheritance is the mechanism of basing an object or class upon another object ( prototype-based inheritance) or class ( class-based inheritance), retaining similar implementation. Also defined as deriving new classe ...

''. All other classes inherit or indirectly inherit the TObject class. Today, many concepts that were defined with CLX have been implemented with the Lazarus Component Library (LCL) for the Lazarus IDE. By docking to different widgetsets, the LCL is able to support an even larger spectrum of platforms including

Mac OS X macOS (; previously OS X and originally Mac OS X) is a Unix operating system developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple's Mac computers. Within the market of desktop and la ...

and Android.

References

{{DEFAULTSORT:Component Library For Cross Platform Borland Component-based software engineering Pascal (programming language) libraries Computer libraries