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来自「嵌入式freetype库的应用文档包含freetype的简要说明和应用examp」· HTML 代码 · 共 198 行
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<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>FreeType-2.1.10 API Reference</title><style type="text/css"> body { font-family: Verdana, Geneva, Arial, Helvetica, serif; color: #000000; background: #FFFFFF; } p { text-align: justify; } h1 { text-align: center; } li { text-align: justify; } a:link { color: #0000EF; } a:visited { color: #51188E; } a:hover { color: #FF0000; } span.keyword { font-family: monospace; text-align: left; white-space: pre; color: darkblue; } pre.colored { color: blue; } ul.empty { list-style-type: none; }</style></head><body><center><h1>FreeType-2.1.10 API Reference</h1></center><center><h1>BDF Files</h1></center><h2>Synopsis</h2><table align=center cellspacing=5 cellpadding=0 border=0><tr><td></td><td><a href="#FT_PropertyType">FT_PropertyType</a></td><td></td><td><a href="#BDF_PropertyRec">BDF_PropertyRec</a></td><td></td><td><a href="#FT_Get_BDF_Property">FT_Get_BDF_Property</a></td></tr><tr><td></td><td><a href="#BDF_Property">BDF_Property</a></td><td></td><td><a href="#FT_Get_BDF_Charset_ID">FT_Get_BDF_Charset_ID</a></td><td></td><td></td></tr></table><br><br><table align=center width="87%"><tr><td><p>This section contains the declaration of BDF specific functions.</p></td></tr></table><br><table align=center width="75%"><tr><td><h4><a name="FT_PropertyType">FT_PropertyType</a></h4><table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre> <span class="keyword">typedef</span> <span class="keyword">enum</span> BDF_PropertyType_ { <a href="ft2-bdf_fonts.html#FT_PropertyType">BDF_PROPERTY_TYPE_NONE</a> = 0, <a href="ft2-bdf_fonts.html#FT_PropertyType">BDF_PROPERTY_TYPE_ATOM</a> = 1, <a href="ft2-bdf_fonts.html#FT_PropertyType">BDF_PROPERTY_TYPE_INTEGER</a> = 2, <a href="ft2-bdf_fonts.html#FT_PropertyType">BDF_PROPERTY_TYPE_CARDINAL</a> = 3 } BDF_PropertyType;</pre></table><br><table align=center width="87%"><tr><td><p>A list of BDF property types.</p></td></tr></table><br><table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>values</b></em></td></tr><tr><td><table cellpadding=3><tr valign=top><td><b>BDF_PROPERTY_TYPE_NONE</b></td><td><p>Value 0 is used to indicate a missing property.</p></td></tr><tr valign=top><td><b>BDF_PROPERTY_TYPE_ATOM</b></td><td><p>Property is a string atom.</p></td></tr><tr valign=top><td><b>BDF_PROPERTY_TYPE_INTEGER</b></td><td><p>Property is a 32-bit signed integer.</p></td></tr><tr valign=top><td><b>BDF_PROPERTY_TYPE_CARDINAL</b></td><td><p>Property is a 32-bit unsigned integer.</p></td></tr></table></td></tr></table></td></tr></table><hr width="75%"><table align=center width="75%"><tr><td><h4><a name="BDF_Property">BDF_Property</a></h4><table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre> <span class="keyword">typedef</span> <span class="keyword">struct</span> BDF_PropertyRec_* <b>BDF_Property</b>;</pre></table><br><table align=center width="87%"><tr><td><p>A handle to a <a href="ft2-bdf_fonts.html#BDF_PropertyRec">BDF_PropertyRec</a> structure to model a given BDF/PCF property.</p></td></tr></table><br></td></tr></table><hr width="75%"><table align=center width="75%"><tr><td><h4><a name="BDF_PropertyRec">BDF_PropertyRec</a></h4><table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre> <span class="keyword">typedef</span> <span class="keyword">struct</span> BDF_PropertyRec_ { BDF_PropertyType type; <span class="keyword">union</span> { <span class="keyword">const</span> <span class="keyword">char</span>* atom; FT_Int32 <span class="keyword">integer</span>; FT_UInt32 cardinal; } u; } <b>BDF_PropertyRec</b>;</pre></table><br><table align=center width="87%"><tr><td><p>This structure models a given BDF/PCF property.</p></td></tr></table><br><table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>fields</b></em></td></tr><tr><td><table cellpadding=3><tr valign=top><td><b>type</b></td><td><p>The property type.</p><p>u.atom :: The atom string, if type is <a href="ft2-bdf_fonts.html#FT_PropertyType">BDF_PROPERTY_TYPE_ATOM</a>.</p><p>u.integer :: A signed integer, if type is <a href="ft2-bdf_fonts.html#FT_PropertyType">BDF_PROPERTY_TYPE_INTEGER</a>.</p><p>u.cardinal :: An unsigned integer, if type is <a href="ft2-bdf_fonts.html#FT_PropertyType">BDF_PROPERTY_TYPE_CARDINAL</a>.</p></td></tr></table></td></tr></table></td></tr></table><hr width="75%"><table align=center width="75%"><tr><td><h4><a name="FT_Get_BDF_Charset_ID">FT_Get_BDF_Charset_ID</a></h4><table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre> FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> ) <b>FT_Get_BDF_Charset_ID</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face, <span class="keyword">const</span> <span class="keyword">char</span>* *acharset_encoding, <span class="keyword">const</span> <span class="keyword">char</span>* *acharset_registry );</pre></table><br><table align=center width="87%"><tr><td><p>Retrieves a BDF font character set identity, according to the BDF specification.</p></td></tr></table><br><table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td><table cellpadding=3><tr valign=top><td><b>face</b></td><td><p>A handle to the input face.</p></td></tr></table></td></tr></table><table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td><table cellpadding=3><tr valign=top><td><b>acharset_encoding</b></td><td><p>Charset encoding, as a C string, owned by the face.</p></td></tr><tr valign=top><td><b>acharset_registry</b></td><td><p>Charset registry, as a C string, owned by the face.</p></td></tr></table></td></tr></table><table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td><p>FreeType error code. 0 means success.</p></td></tr></table><table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td><p>This function only works with BDF faces, returning an error otherwise.</p></td></tr></table></td></tr></table><hr width="75%"><table align=center width="75%"><tr><td><h4><a name="FT_Get_BDF_Property">FT_Get_BDF_Property</a></h4><table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre> FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> ) <b>FT_Get_BDF_Property</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face, <span class="keyword">const</span> <span class="keyword">char</span>* prop_name, <a href="ft2-bdf_fonts.html#BDF_PropertyRec">BDF_PropertyRec</a> *aproperty );</pre></table><br><table align=center width="87%"><tr><td><p>Retrieves a BDF property from a BDF or PCF font file.</p></td></tr></table><br><table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td><table cellpadding=3><tr valign=top><td><b>face</b></td><td><p>A handle to the input face.</p></td></tr><tr valign=top><td><b>name</b></td><td><p>The property name.</p></td></tr></table></td></tr></table><table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td><table cellpadding=3><tr valign=top><td><b>aproperty</b></td><td><p>The property.</p></td></tr></table></td></tr></table><table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td><p>FreeType error code. 0 means success.</p></td></tr></table><table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td><p>This function works with BDF <i>and</i> PCF fonts. It returns an error otherwise. It also returns an error if the property is not in the font.</p><p>In case of error, "aproperty->type" is always set to <a href="ft2-bdf_fonts.html#FT_PropertyType">BDF_PROPERTY_TYPE_NONE</a>.</p></td></tr></table></td></tr></table><hr width="75%"></body></html>⌨️ 快捷键说明
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