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Free Component Library
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<p>The Free Component Library, abbreviated <i>FCL</i>, is a software component library for <a href="/facts/Free_Pascal/kmGChqAg">Free Pascal</a>. </p><p>The FCL consists of a collection of <a href="/facts/Unit_(Software_Development)/sNoqKvRD">units</a> that provide <a href="/facts/Component-based_software_engineering/eW5wvSHC">components</a> and <a href="/facts/Class_(computer_programming)/zvzkSAtE">classes</a> for general programming tasks. Although it is intended to be compatible with <a href="/facts/Borland_Delphi/sUFUXQ8r">Delphi</a>'s <a href="/facts/Visual_Component_Library/YxGluXeP">Visual Component Library</a> (VCL) the FCL is restricted to non-visual components. On the other hand, its functionality partly exceeds that of the VCL. </p><p>Visual components are provided by the <a href="/facts/Lazarus_Component_Library/LhrHNzxy">Lazarus Component Library</a> (LCL). </p><p>The FCL is based on the <a href="/facts/Free_Pascal_Runtime_Library/RluL4Cpr">Free Pascal Runtime Library</a> (RTL). </p>