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<!doctype html> <html lang="en" class="no-js"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width,initial-scale=1"> <meta name="description" content="API Reference Documentation for FreeType-2.12.1"> <meta name="author" content="FreeType Contributors"> <link rel="icon" href="images/favico.ico"> <meta name="generator" content="mkdocs-1.2.1, mkdocs-material-7.1.9"> <title>FreeType-2.12.1 API Reference</title> <link rel="stylesheet" href="assets/stylesheets/main.ca7ac06f.min.css"> <link rel="stylesheet" href="assets/stylesheets/palette.f1a3b89f.min.css"> <meta name="theme-color" content="#4cae4f"> <style>:root{--md-text-font-family:"Noto Serif";--md-code-font-family:"Roboto Mono"}</style> <link rel="stylesheet" href="stylesheets/extra.css"> </head> <body dir="ltr" data-md-color-scheme="" data-md-color-primary="green" data-md-color-accent="green"> <script>function __prefix(e){return new URL(".",location).pathname+"."+e}function __get(e,t=localStorage){return 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class="md-nav__item"> <a href="ft2-color_management.html" class="md-nav__link"> Glyph Color Management </a> </li> <li class="md-nav__item"> <a href="ft2-layer_management.html" class="md-nav__link"> Glyph Layer Management </a> </li> <li class="md-nav__item"> <a href="ft2-glyph_management.html" class="md-nav__link"> Glyph Management </a> </li> <li class="md-nav__item"> <a href="ft2-mac_specific.html" class="md-nav__link"> Mac Specific Interface </a> </li> <li class="md-nav__item"> <a href="ft2-sizes_management.html" class="md-nav__link"> Size Management </a> </li> <li class="md-nav__item"> <a href="ft2-header_file_macros.html" class="md-nav__link"> Header File Macros </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_5" type="checkbox" id="__nav_5" > <label class="md-nav__link" for="__nav_5"> Format-Specific API <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" aria-label="Format-Specific API" data-md-level="1"> <label class="md-nav__title" for="__nav_5"> <span class="md-nav__icon md-icon"></span> Format-Specific API </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="ft2-multiple_masters.html" class="md-nav__link"> Multiple Masters </a> </li> <li class="md-nav__item"> <a href="ft2-truetype_tables.html" class="md-nav__link"> TrueType Tables </a> </li> <li class="md-nav__item"> <a href="ft2-type1_tables.html" class="md-nav__link"> Type 1 Tables </a> </li> <li class="md-nav__item"> <a href="ft2-sfnt_names.html" class="md-nav__link"> SFNT Names </a> </li> <li class="md-nav__item"> <a href="ft2-bdf_fonts.html" class="md-nav__link"> BDF and PCF Files </a> </li> <li class="md-nav__item"> <a href="ft2-cid_fonts.html" class="md-nav__link"> CID Fonts </a> </li> <li class="md-nav__item"> <a href="ft2-pfr_fonts.html" class="md-nav__link"> PFR Fonts </a> </li> <li class="md-nav__item"> <a href="ft2-winfnt_fonts.html" class="md-nav__link"> Window FNT Files </a> </li> <li class="md-nav__item"> <a href="ft2-svg_fonts.html" class="md-nav__link"> OpenType SVG Fonts </a> </li> <li class="md-nav__item"> <a href="ft2-font_formats.html" class="md-nav__link"> Font Formats </a> </li> <li class="md-nav__item"> <a href="ft2-gasp_table.html" class="md-nav__link"> Gasp Table </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_6" type="checkbox" id="__nav_6" > <label class="md-nav__link" for="__nav_6"> Controlling FreeType Modules <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" aria-label="Controlling FreeType Modules" data-md-level="1"> <label class="md-nav__title" for="__nav_6"> <span class="md-nav__icon md-icon"></span> Controlling FreeType Modules </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="ft2-auto_hinter.html" class="md-nav__link"> The auto-hinter </a> </li> <li class="md-nav__item"> <a href="ft2-cff_driver.html" class="md-nav__link"> The CFF driver </a> </li> <li class="md-nav__item"> <a href="ft2-t1_cid_driver.html" class="md-nav__link"> The Type 1 and CID drivers </a> </li> <li class="md-nav__item"> <a href="ft2-tt_driver.html" class="md-nav__link"> The TrueType driver </a> </li> <li class="md-nav__item"> <a href="ft2-pcf_driver.html" class="md-nav__link"> The PCF driver </a> </li> <li class="md-nav__item"> <a href="ft2-ot_svg_driver.html" class="md-nav__link"> The SVG driver </a> </li> <li class="md-nav__item"> <a href="ft2-properties.html" class="md-nav__link"> Driver properties </a> </li> <li class="md-nav__item"> <a href="ft2-parameter_tags.html" class="md-nav__link"> Parameter Tags </a> </li> <li class="md-nav__item"> <a href="ft2-lcd_rendering.html" class="md-nav__link"> Subpixel Rendering </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle" 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class="md-nav__item"> <a href="ft2-computations.html" class="md-nav__link"> Computations </a> </li> <li class="md-nav__item"> <a href="ft2-list_processing.html" class="md-nav__link"> List Processing </a> </li> <li class="md-nav__item"> <a href="ft2-outline_processing.html" class="md-nav__link"> Outline Processing </a> </li> <li class="md-nav__item"> <a href="ft2-quick_advance.html" class="md-nav__link"> Quick retrieval of advance values </a> </li> <li class="md-nav__item"> <a href="ft2-bitmap_handling.html" class="md-nav__link"> Bitmap Handling </a> </li> <li class="md-nav__item"> <a href="ft2-raster.html" class="md-nav__link"> Scanline Converter </a> </li> <li class="md-nav__item"> <a href="ft2-glyph_stroker.html" class="md-nav__link"> Glyph Stroker </a> </li> <li class="md-nav__item"> <a href="ft2-system_interface.html" class="md-nav__link"> System Interface </a> </li> <li class="md-nav__item"> <a href="ft2-module_management.html" class="md-nav__link"> Module Management </a> </li> <li class="md-nav__item"> <a href="ft2-gzip.html" class="md-nav__link"> GZIP Streams </a> </li> <li class="md-nav__item"> <a href="ft2-lzw.html" class="md-nav__link"> LZW Streams </a> </li> <li class="md-nav__item"> <a href="ft2-bzip2.html" class="md-nav__link"> BZIP2 Streams </a> </li> <li class="md-nav__item"> <a href="ft2-debugging_apis.html" class="md-nav__link"> External Debugging APIs </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_9" type="checkbox" id="__nav_9" > <label class="md-nav__link" for="__nav_9"> Error Codes <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" aria-label="Error Codes" data-md-level="1"> <label class="md-nav__title" for="__nav_9"> <span class="md-nav__icon md-icon"></span> Error Codes </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="ft2-error_enumerations.html" class="md-nav__link"> Error Enumerations </a> </li> <li class="md-nav__item"> <a href="ft2-error_code_values.html" class="md-nav__link"> Error Code Values </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_10" type="checkbox" id="__nav_10" > <label class="md-nav__link" for="__nav_10"> Miscellaneous <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" aria-label="Miscellaneous" data-md-level="1"> <label class="md-nav__title" for="__nav_10"> <span class="md-nav__icon md-icon"></span> Miscellaneous </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="ft2-gx_validation.html" class="md-nav__link"> TrueTypeGX/AAT Validation </a> </li> <li class="md-nav__item"> <a href="ft2-incremental.html" class="md-nav__link"> Incremental Loading </a> </li> <li class="md-nav__item"> <a href="ft2-truetype_engine.html" class="md-nav__link"> The TrueType Engine </a> </li> <li class="md-nav__item"> <a href="ft2-ot_validation.html" class="md-nav__link"> OpenType Validation </a> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" > <div class="md-sidebar__scrollwrap"> <div class="md-sidebar__inner"> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> </nav> </div> </div> </div> <div class="md-content" data-md-component="content"> <article class="md-content__inner md-typeset"> <p><a href="https://www.freetype.org">FreeType</a> » <a href="../">Docs</a> » Table of Contents</p> <hr /> <h1 id="freetype-2121-api-reference">FreeType-2.12.1 API Reference<a class="headerlink" href="#freetype-2121-api-reference" title="Permanent link">¶</a></h1> <h1 id="table-of-contents">Table of Contents<a class="headerlink" href="#table-of-contents" title="Permanent link">¶</a></h1> <h2 id="general-remarks">General Remarks<a class="headerlink" href="#general-remarks" title="Permanent link">¶</a></h2> <table class="toc"> <tr><td class="link"><a href="ft2-preamble.html">Preamble</a></td><td class="desc"> <p>What FreeType is and isn't</p> </td></tr> <tr><td class="link"><a href="ft2-header_inclusion.html">FreeType's header inclusion scheme</a></td><td class="desc"> <p>How client applications should include FreeType header files.</p> </td></tr> <tr><td class="link"><a href="ft2-user_allocation.html">User allocation</a></td><td class="desc"> <p>How client applications should allocate FreeType data structures.</p> </td></tr> </table> <h2 id="core-api">Core API<a class="headerlink" href="#core-api" title="Permanent link">¶</a></h2> <table class="toc"> <tr><td class="link"><a href="ft2-version.html">FreeType Version</a></td><td class="desc"> <p>Functions and macros related to FreeType versions.</p> </td></tr> <tr><td class="link"><a href="ft2-basic_types.html">Basic Data Types</a></td><td class="desc"> <p>The basic data types defined by the library.</p> </td></tr> <tr><td class="link"><a href="ft2-base_interface.html">Base Interface</a></td><td class="desc"> <p>The FreeType 2 base font interface.</p> </td></tr> <tr><td class="link"><a href="ft2-glyph_variants.html">Unicode Variation Sequences</a></td><td class="desc"> <p>The FreeType 2 interface to Unicode Variation Sequences (UVS), using the SFNT cmap format 14.</p> </td></tr> <tr><td class="link"><a href="ft2-color_management.html">Glyph Color Management</a></td><td class="desc"> <p>Retrieving and manipulating OpenType's ‘CPAL’ table data.</p> </td></tr> <tr><td class="link"><a href="ft2-layer_management.html">Glyph Layer Management</a></td><td class="desc"> <p>Retrieving and manipulating OpenType's ‘COLR’ table data.</p> </td></tr> <tr><td class="link"><a href="ft2-glyph_management.html">Glyph Management</a></td><td class="desc"> <p>Generic interface to manage individual glyph data.</p> </td></tr> <tr><td class="link"><a href="ft2-mac_specific.html">Mac Specific Interface</a></td><td class="desc"> <p>Only available on the Macintosh.</p> </td></tr> <tr><td class="link"><a href="ft2-sizes_management.html">Size Management</a></td><td class="desc"> <p>Managing multiple sizes per face.</p> </td></tr> <tr><td class="link"><a href="ft2-header_file_macros.html">Header File Macros</a></td><td class="desc"> <p>Macro definitions used to <code>#include</code> specific header files.</p> </td></tr> </table> <h2 id="format-specific-api">Format-Specific API<a class="headerlink" href="#format-specific-api" title="Permanent link">¶</a></h2> <table class="toc"> <tr><td class="link"><a href="ft2-multiple_masters.html">Multiple Masters</a></td><td class="desc"> <p>How to manage Multiple Masters fonts.</p> </td></tr> <tr><td class="link"><a href="ft2-truetype_tables.html">TrueType Tables</a></td><td class="desc"> <p>TrueType-specific table types and functions.</p> </td></tr> <tr><td class="link"><a href="ft2-type1_tables.html">Type 1 Tables</a></td><td class="desc"> <p>Type 1-specific font tables.</p> </td></tr> <tr><td class="link"><a href="ft2-sfnt_names.html">SFNT Names</a></td><td class="desc"> <p>Access the names embedded in TrueType and OpenType files.</p> </td></tr> <tr><td class="link"><a href="ft2-bdf_fonts.html">BDF and PCF Files</a></td><td class="desc"> <p>BDF and PCF specific API.</p> </td></tr> <tr><td class="link"><a href="ft2-cid_fonts.html">CID Fonts</a></td><td class="desc"> <p>CID-keyed font-specific API.</p> </td></tr> <tr><td class="link"><a href="ft2-pfr_fonts.html">PFR Fonts</a></td><td class="desc"> <p>PFR/TrueDoc-specific API.</p> </td></tr> <tr><td class="link"><a href="ft2-winfnt_fonts.html">Window FNT Files</a></td><td class="desc"> <p>Windows FNT-specific API.</p> </td></tr> <tr><td class="link"><a href="ft2-svg_fonts.html">OpenType SVG Fonts</a></td><td class="desc"> <p>OT-SVG API between FreeType and an external SVG rendering library.</p> </td></tr> <tr><td class="link"><a href="ft2-font_formats.html">Font Formats</a></td><td class="desc"> <p>Getting the font format.</p> </td></tr> <tr><td class="link"><a href="ft2-gasp_table.html">Gasp Table</a></td><td class="desc"> <p>Retrieving TrueType ‘gasp’ table entries.</p> </td></tr> </table> <h2 id="controlling-freetype-modules">Controlling FreeType Modules<a class="headerlink" href="#controlling-freetype-modules" title="Permanent link">¶</a></h2> <table class="toc"> <tr><td class="link"><a href="ft2-auto_hinter.html">The auto-hinter</a></td><td class="desc"> <p>Controlling the auto-hinting module.</p> </td></tr> <tr><td class="link"><a href="ft2-cff_driver.html">The CFF driver</a></td><td class="desc"> <p>Controlling the CFF driver module.</p> </td></tr> <tr><td class="link"><a href="ft2-t1_cid_driver.html">The Type 1 and CID drivers</a></td><td class="desc"> <p>Controlling the Type 1 and CID driver modules.</p> </td></tr> <tr><td class="link"><a href="ft2-tt_driver.html">The TrueType driver</a></td><td class="desc"> <p>Controlling the TrueType driver module.</p> </td></tr> <tr><td class="link"><a href="ft2-pcf_driver.html">The PCF driver</a></td><td class="desc"> <p>Controlling the PCF driver module.</p> </td></tr> <tr><td class="link"><a href="ft2-ot_svg_driver.html">The SVG driver</a></td><td class="desc"> <p>Controlling the external rendering of OT-SVG glyphs.</p> </td></tr> <tr><td class="link"><a href="ft2-properties.html">Driver properties</a></td><td class="desc"> <p>Controlling driver modules.</p> </td></tr> <tr><td class="link"><a href="ft2-parameter_tags.html">Parameter Tags</a></td><td class="desc"> <p>Macros for driver property and font loading parameter tags.</p> </td></tr> <tr><td class="link"><a href="ft2-lcd_rendering.html">Subpixel Rendering</a></td><td class="desc"> <p>API to control subpixel rendering.</p> </td></tr> </table> <h2 id="cache-sub-system">Cache Sub-System<a class="headerlink" href="#cache-sub-system" title="Permanent link">¶</a></h2> <table class="toc"> <tr><td class="link"><a href="ft2-cache_subsystem.html">Cache Sub-System</a></td><td class="desc"> <p>How to cache face, size, and glyph data with FreeType 2.</p> </td></tr> </table> <h2 id="support-api">Support API<a class="headerlink" href="#support-api" title="Permanent link">¶</a></h2> <table class="toc"> <tr><td class="link"><a href="ft2-computations.html">Computations</a></td><td class="desc"> <p>Crunching fixed numbers and vectors.</p> </td></tr> <tr><td class="link"><a href="ft2-list_processing.html">List Processing</a></td><td class="desc"> <p>Simple management of lists.</p> </td></tr> <tr><td class="link"><a href="ft2-outline_processing.html">Outline Processing</a></td><td class="desc"> <p>Functions to create, transform, and render vectorial glyph images.</p> </td></tr> <tr><td class="link"><a href="ft2-quick_advance.html">Quick retrieval of advance values</a></td><td class="desc"> <p>Retrieve horizontal and vertical advance values without processing glyph outlines, if possible.</p> </td></tr> <tr><td class="link"><a href="ft2-bitmap_handling.html">Bitmap Handling</a></td><td class="desc"> <p>Handling FT_Bitmap objects.</p> </td></tr> <tr><td class="link"><a href="ft2-raster.html">Scanline Converter</a></td><td class="desc"> <p>How vectorial outlines are converted into bitmaps and pixmaps.</p> </td></tr> <tr><td class="link"><a href="ft2-glyph_stroker.html">Glyph Stroker</a></td><td class="desc"> <p>Generating bordered and stroked glyphs.</p> </td></tr> <tr><td class="link"><a href="ft2-system_interface.html">System Interface</a></td><td class="desc"> <p>How FreeType manages memory and i/o.</p> </td></tr> <tr><td class="link"><a href="ft2-module_management.html">Module Management</a></td><td class="desc"> <p>How to add, upgrade, remove, and control modules from FreeType.</p> </td></tr> <tr><td class="link"><a href="ft2-gzip.html">GZIP Streams</a></td><td class="desc"> <p>Using gzip-compressed font files.</p> </td></tr> <tr><td class="link"><a href="ft2-lzw.html">LZW Streams</a></td><td class="desc"> <p>Using LZW-compressed font files.</p> </td></tr> <tr><td class="link"><a href="ft2-bzip2.html">BZIP2 Streams</a></td><td class="desc"> <p>Using bzip2-compressed font files.</p> </td></tr> <tr><td class="link"><a href="ft2-debugging_apis.html">External Debugging APIs</a></td><td class="desc"> <p>Public APIs to control the <code>FT_DEBUG_LOGGING</code> macro.</p> </td></tr> </table> <h2 id="error-codes">Error Codes<a class="headerlink" href="#error-codes" title="Permanent link">¶</a></h2> <table class="toc"> <tr><td class="link"><a href="ft2-error_enumerations.html">Error Enumerations</a></td><td class="desc"> <p>How to handle errors and error strings.</p> </td></tr> <tr><td class="link"><a href="ft2-error_code_values.html">Error Code Values</a></td><td class="desc"> <p>All possible error codes returned by FreeType functions.</p> </td></tr> </table> <h2 id="miscellaneous">Miscellaneous<a class="headerlink" href="#miscellaneous" title="Permanent link">¶</a></h2> <table class="toc"> <tr><td class="link"><a href="ft2-gx_validation.html">TrueTypeGX/AAT Validation</a></td><td class="desc"> <p>An API to validate TrueTypeGX/AAT tables.</p> </td></tr> <tr><td class="link"><a href="ft2-incremental.html">Incremental Loading</a></td><td class="desc"> <p>Custom Glyph Loading.</p> </td></tr> <tr><td class="link"><a href="ft2-truetype_engine.html">The TrueType Engine</a></td><td class="desc"> <p>TrueType bytecode support.</p> </td></tr> <tr><td class="link"><a href="ft2-ot_validation.html">OpenType Validation</a></td><td class="desc"> <p>An API to validate OpenType tables.</p> </td></tr> </table> <h2 id="global-index"><a href="ft2-index.html">Global Index</a><a class="headerlink" href="#global-index" title="Permanent link">¶</a></h2> <hr /> <div class="timestamp">generated on Sun May 1 05:24:59 2022 UTC</div> </article> </div> </div> </main> <footer class="md-footer"> <nav class="md-footer__inner md-grid" aria-label="Footer"> <a href="ft2-index.html" 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