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<title>ICU 4.4: ParagraphLayout::VisualRun Class Reference</title>
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<div class="navpath"><a class="el" href="classParagraphLayout.html">ParagraphLayout</a>::<a class="el" href="classParagraphLayout_1_1VisualRun.html">VisualRun</a>
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<h1>ParagraphLayout::VisualRun Class Reference</h1><!-- doxytag: class="ParagraphLayout::VisualRun" --><!-- doxytag: inherits="UObject" -->
<p>This object represents a single visual run in a line of text in a paragraph.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>></code></p>
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Inheritance diagram for ParagraphLayout::VisualRun:</div>
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<img src="classParagraphLayout_1_1VisualRun.gif" usemap="#ParagraphLayout::VisualRun_map" alt=""/>
<map id="ParagraphLayout::VisualRun_map" name="ParagraphLayout::VisualRun_map">
<area href="classUObject.html" alt="UObject" shape="rect" coords="0,56,173,80"/>
<area href="classUMemory.html" alt="UMemory" shape="rect" coords="0,0,173,24"/>
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<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classLEFontInstance.html">LEFontInstance</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classParagraphLayout_1_1VisualRun.html#ae09eadf5efc2a90aaf8ac4f37afc00c3">getFont</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the <code><a class="el" href="classLEFontInstance.html" title="This is a virtual base class that serves as the interface between a LayoutEngine...">LEFontInstance</a></code> object which represents the font of the visual run. <a href="#ae09eadf5efc2a90aaf8ac4f37afc00c3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="ubidi_8h.html#a68a6b5fdcbf80aaa51b5bd39f7f31102">UBiDiDirection</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classParagraphLayout_1_1VisualRun.html#a6e383e7f79db97e8de6227c0c4f63931">getDirection</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the direction of the visual run. <a href="#a6e383e7f79db97e8de6227c0c4f63931"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a">le_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classParagraphLayout_1_1VisualRun.html#a4c5d161a68f2305a4c473b907d12c924">getGlyphCount</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the number of glyphs in the visual run. <a href="#a4c5d161a68f2305a4c473b907d12c924"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="LETypes_8h.html#ae440e077586bced1a0d1c534643ffc23">LEGlyphID</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classParagraphLayout_1_1VisualRun.html#a50442ccb7da5d3442a608f3a70e990bd">getGlyphs</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the glyphs in the visual run. <a href="#a50442ccb7da5d3442a608f3a70e990bd"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const float * </td><td class="memItemRight" valign="bottom"><a class="el" href="classParagraphLayout_1_1VisualRun.html#a383fd1c8e4bdadb470aec916e0f98ce5">getPositions</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the (x, y) positions of the glyphs in the visual run. <a href="#a383fd1c8e4bdadb470aec916e0f98ce5"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a">le_int32</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classParagraphLayout_1_1VisualRun.html#a13d64c3e5ca2cb73236595c0ae71c464">getGlyphToCharMap</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the glyph-to-character map for this visual run. <a href="#a13d64c3e5ca2cb73236595c0ae71c464"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a">le_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classParagraphLayout_1_1VisualRun.html#ae3fb40ca14c91aa607db680e5bd4bfc0">getAscent</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A convenience method which returns the ascent value for the font associated with this run. <a href="#ae3fb40ca14c91aa607db680e5bd4bfc0"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a">le_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classParagraphLayout_1_1VisualRun.html#a20e181a7eca537305e8d95e4b66b8c4b">getDescent</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A convenience method which returns the descent value for the font associated with this run. <a href="#a20e181a7eca537305e8d95e4b66b8c4b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a">le_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classParagraphLayout_1_1VisualRun.html#a072e80a8db2b95d835baf289aedc6fea">getLeading</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A convenience method which returns the leading value for the font associated with this run. <a href="#a072e80a8db2b95d835baf289aedc6fea"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="utypes_8h.html#a22af10545208a455a6e884008df48e9f">UClassID</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classParagraphLayout_1_1VisualRun.html#a32d45bb6958b3e4c7d5ae9bab6336c90">getDynamicClassID</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">ICU "poor man's RTTI", returns a UClassID for the actual class. <a href="#a32d45bb6958b3e4c7d5ae9bab6336c90"></a><br/></td></tr>
<tr><td colspan="2"><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static <a class="el" href="utypes_8h.html#a22af10545208a455a6e884008df48e9f">UClassID</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classParagraphLayout_1_1VisualRun.html#ada2a43633ffc27e1757d0066c700bff6">getStaticClassID</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">ICU "poor man's RTTI", returns a UClassID for this class. <a href="#ada2a43633ffc27e1757d0066c700bff6"></a><br/></td></tr>
<tr><td colspan="2"><h2>Friends</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a864cca3466d5710a4742ec5caf34b497"></a><!-- doxytag: member="ParagraphLayout::VisualRun::Line" ref="a864cca3466d5710a4742ec5caf34b497" args="" -->
class </td><td class="memItemRight" valign="bottom"><b>Line</b></td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>This object represents a single visual run in a line of text in a paragraph. </p>
<p>A visual run is text which is in the same font, script, and direction. The text is represented by an array of <code>LEGlyphIDs</code>, an array of (x, y) glyph positions and a table which maps indices into the glyph array to indices into the original character array which was used to create the paragraph.</p>
<p>These objects are only created by <code><a class="el" href="classParagraphLayout_1_1Line.html" title="This class represents a single line of text in a ParagraphLayout.">ParagraphLayout::Line</a></code> objects, so their constructors and destructors are private.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classParagraphLayout_1_1Line.html" title="This class represents a single line of text in a ParagraphLayout.">ParagraphLayout::Line</a></dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004149">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00198">198</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="ae3fb40ca14c91aa607db680e5bd4bfc0"></a><!-- doxytag: member="ParagraphLayout::VisualRun::getAscent" ref="ae3fb40ca14c91aa607db680e5bd4bfc0" args="() const " -->
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<td class="memname"><a class="el" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a">le_int32</a> ParagraphLayout::VisualRun::getAscent </td>
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<p>A convenience method which returns the ascent value for the font associated with this run. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the ascent value of this run's font.</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004177">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00700">700</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
<p>References <a class="el" href="classLEFontInstance.html#ae998881f1c92d740d2508c34c5452d7e">LEFontInstance::getAscent()</a>.</p>
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<a class="anchor" id="a20e181a7eca537305e8d95e4b66b8c4b"></a><!-- doxytag: member="ParagraphLayout::VisualRun::getDescent" ref="a20e181a7eca537305e8d95e4b66b8c4b" args="() const " -->
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<td class="memname"><a class="el" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a">le_int32</a> ParagraphLayout::VisualRun::getDescent </td>
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<p>A convenience method which returns the descent value for the font associated with this run. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the descent value of this run's font.</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004178">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00705">705</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
<p>References <a class="el" href="classLEFontInstance.html#aad3b9dbda9a15e478781aa033737da9e">LEFontInstance::getDescent()</a>.</p>
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<a class="anchor" id="a6e383e7f79db97e8de6227c0c4f63931"></a><!-- doxytag: member="ParagraphLayout::VisualRun::getDirection" ref="a6e383e7f79db97e8de6227c0c4f63931" args="() const " -->
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<td class="memname"><a class="el" href="ubidi_8h.html#a68a6b5fdcbf80aaa51b5bd39f7f31102">UBiDiDirection</a> ParagraphLayout::VisualRun::getDirection </td>
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<p>Get the direction of the visual run. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the direction of the run. This will be UBIDI_LTR if the run is left-to-right and UBIDI_RTL if the line is right-to-left.</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004172">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00675">675</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
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<a class="anchor" id="a32d45bb6958b3e4c7d5ae9bab6336c90"></a><!-- doxytag: member="ParagraphLayout::VisualRun::getDynamicClassID" ref="a32d45bb6958b3e4c7d5ae9bab6336c90" args="() const " -->
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<td class="memname">virtual <a class="el" href="utypes_8h.html#a22af10545208a455a6e884008df48e9f">UClassID</a> ParagraphLayout::VisualRun::getDynamicClassID </td>
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<p>ICU "poor man's RTTI", returns a UClassID for the actual class. </p>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004181">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Implements <a class="el" href="classUObject.html#a9b1acc95efd89cb86ec31f2dc947a262">UObject</a>.</p>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00315">315</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
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<a class="anchor" id="ae09eadf5efc2a90aaf8ac4f37afc00c3"></a><!-- doxytag: member="ParagraphLayout::VisualRun::getFont" ref="ae09eadf5efc2a90aaf8ac4f37afc00c3" args="() const " -->
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<td class="memname">const <a class="el" href="classLEFontInstance.html">LEFontInstance</a> * ParagraphLayout::VisualRun::getFont </td>
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<p>Get the <code><a class="el" href="classLEFontInstance.html" title="This is a virtual base class that serves as the interface between a LayoutEngine...">LEFontInstance</a></code> object which represents the font of the visual run. </p>
<p>This will always be a non-composite font.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the <code><a class="el" href="classLEFontInstance.html" title="This is a virtual base class that serves as the interface between a LayoutEngine...">LEFontInstance</a></code> object which represents the font of the visual run.</dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classLEFontInstance.html" title="This is a virtual base class that serves as the interface between a LayoutEngine...">LEFontInstance</a></dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004171">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00670">670</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
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<a class="anchor" id="a4c5d161a68f2305a4c473b907d12c924"></a><!-- doxytag: member="ParagraphLayout::VisualRun::getGlyphCount" ref="a4c5d161a68f2305a4c473b907d12c924" args="() const " -->
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<td class="memname"><a class="el" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a">le_int32</a> ParagraphLayout::VisualRun::getGlyphCount </td>
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<p>Get the number of glyphs in the visual run. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the number of glyphs.</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004173">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00680">680</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
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<td class="memname">const <a class="el" href="LETypes_8h.html#ae440e077586bced1a0d1c534643ffc23">LEGlyphID</a> * ParagraphLayout::VisualRun::getGlyphs </td>
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<p>Get the glyphs in the visual run. </p>
<p>Glyphs with the values <code>0xFFFE</code> and <code>0xFFFF</code> should be ignored.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the address of the array of glyphs for this visual run. The storage is owned by the <code><a class="el" href="classParagraphLayout_1_1VisualRun.html" title="This object represents a single visual run in a line of text in a paragraph.">VisualRun</a></code> object and must not be deleted. It will remain valid as long as the <code><a class="el" href="classParagraphLayout_1_1VisualRun.html" title="This object represents a single visual run in a line of text in a paragraph.">VisualRun</a></code> object is valid.</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004174">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00685">685</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
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<td class="memname">const <a class="el" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a">le_int32</a> * ParagraphLayout::VisualRun::getGlyphToCharMap </td>
<td>(</td>
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<p>Get the glyph-to-character map for this visual run. </p>
<p>This maps the indices into the glyph array to indices into the character array used to create the paragraph.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the address of the character-to-glyph map for this visual run. The storage is owned by the <code><a class="el" href="classParagraphLayout_1_1VisualRun.html" title="This object represents a single visual run in a line of text in a paragraph.">VisualRun</a></code> object and must not be deleted. It will remain valid as long as the <code><a class="el" href="classParagraphLayout_1_1VisualRun.html" title="This object represents a single visual run in a line of text in a paragraph.">VisualRun</a></code> object is valid.</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004176">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00695">695</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
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<a class="anchor" id="a072e80a8db2b95d835baf289aedc6fea"></a><!-- doxytag: member="ParagraphLayout::VisualRun::getLeading" ref="a072e80a8db2b95d835baf289aedc6fea" args="() const " -->
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<td class="memname"><a class="el" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a">le_int32</a> ParagraphLayout::VisualRun::getLeading </td>
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<p>A convenience method which returns the leading value for the font associated with this run. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the leading value of this run's font.</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004179">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00710">710</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
<p>References <a class="el" href="classLEFontInstance.html#ad64ff3fc567404a2fb2bc79f2c254c00">LEFontInstance::getLeading()</a>.</p>
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<a class="anchor" id="a383fd1c8e4bdadb470aec916e0f98ce5"></a><!-- doxytag: member="ParagraphLayout::VisualRun::getPositions" ref="a383fd1c8e4bdadb470aec916e0f98ce5" args="() const " -->
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<td class="memname">const float * ParagraphLayout::VisualRun::getPositions </td>
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<p>Get the (x, y) positions of the glyphs in the visual run. </p>
<p>To simplify storage management, the x and y positions are stored in a single array with the x positions at even offsets in the array and the corresponding y position in the following odd offset. There is an extra (x, y) pair at the end of the array which represents the advance of the final glyph in the run.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the address of the array of glyph positions for this visual run. The storage is owned by the <code><a class="el" href="classParagraphLayout_1_1VisualRun.html" title="This object represents a single visual run in a line of text in a paragraph.">VisualRun</a></code> object and must not be deleted. It will remain valid as long as the <code><a class="el" href="classParagraphLayout_1_1VisualRun.html" title="This object represents a single visual run in a line of text in a paragraph.">VisualRun</a></code> object is valid.</dd></dl>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004175">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00690">690</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
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<a class="anchor" id="ada2a43633ffc27e1757d0066c700bff6"></a><!-- doxytag: member="ParagraphLayout::VisualRun::getStaticClassID" ref="ada2a43633ffc27e1757d0066c700bff6" args="()" -->
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<td class="memname">static <a class="el" href="utypes_8h.html#a22af10545208a455a6e884008df48e9f">UClassID</a> ParagraphLayout::VisualRun::getStaticClassID </td>
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<p>ICU "poor man's RTTI", returns a UClassID for this class. </p>
<dl class="stable"><dt><b><a class="el" href="stable.html#_stable004180">Stable:</a></b></dt><dd>ICU 3.2 </dd></dl>
<p>Definition at line <a class="el" href="ParagraphLayout_8h_source.html#l00308">308</a> of file <a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="ParagraphLayout_8h_source.html">ParagraphLayout.h</a></li>
</ul>
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