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174 lines
8.5 KiB
174 lines
8.5 KiB
13 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/kernel/qmetaobject.cpp:844 -->
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>TQMetaProperty Class</title>
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<style type="text/css"><!--
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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<font color="#004faf">Annotated</font></a>
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<font color="#004faf">Grouped Classes</font></a>
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<font color="#004faf">Functions</font></a>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQMetaProperty Class Reference</h1>
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<p>The TQMetaProperty class stores meta data about a property.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qmetaobject-h.html">qmetaobject.h</a>></tt>
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<p><a href="qmetaproperty-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn>const char * <a href="#type"><b>type</b></a> () const</li>
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<li class=fn>const char * <a href="#name"><b>name</b></a> () const</li>
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<li class=fn>bool <a href="#writable"><b>writable</b></a> () const</li>
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<li class=fn>bool <a href="#isSetType"><b>isSetType</b></a> () const</li>
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<li class=fn>bool <a href="#isEnumType"><b>isEnumType</b></a> () const</li>
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<li class=fn>TQStrList <a href="#enumKeys"><b>enumKeys</b></a> () const</li>
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<li class=fn>int <a href="#keyToValue"><b>keyToValue</b></a> ( const char * key ) const</li>
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<li class=fn>const char * <a href="#valueToKey"><b>valueToKey</b></a> ( int value ) const</li>
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<li class=fn>int <a href="#keysToValue"><b>keysToValue</b></a> ( const TQStrList & keys ) const</li>
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<li class=fn>TQStrList <a href="#valueToKeys"><b>valueToKeys</b></a> ( int value ) const</li>
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<li class=fn>bool <a href="#designable"><b>designable</b></a> ( TQObject * o = 0 ) const</li>
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<li class=fn>bool <a href="#scriptable"><b>scriptable</b></a> ( TQObject * o = 0 ) const</li>
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<li class=fn>bool <a href="#stored"><b>stored</b></a> ( TQObject * o = 0 ) const</li>
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<li class=fn>bool <a href="#reset"><b>reset</b></a> ( TQObject * o ) const</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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<p> The TQMetaProperty class stores meta data about a property.
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<p>
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<p> Property meta data includes <a href="#type">type</a>(), <a href="#name">name</a>(), and whether a property
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is <a href="#writable">writable</a>(), <a href="#designable">designable</a>() and <a href="#stored">stored</a>().
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<p> The functions <a href="#isSetType">isSetType</a>(), <a href="#isEnumType">isEnumType</a>() and <a href="#enumKeys">enumKeys</a>() provide
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further information about a property's type. The conversion
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functions <a href="#keyToValue">keyToValue</a>(), <a href="#valueToKey">valueToKey</a>(), <a href="#keysToValue">keysToValue</a>() and
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<a href="#valueToKeys">valueToKeys</a>() allow conversion between the integer representation
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of an enumeration or set value and its literal representation.
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<p> Actual property values are set and received through <a href="qobject.html">TQObject</a>'s set
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and get functions. See <a href="qobject.html#setProperty">TQObject::setProperty</a>() and
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<a href="qobject.html#property">TQObject::property</a>() for details.
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<p> You receive meta property data through an object's <a href="metaobjects.html#meta-object">meta object</a>.
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See <a href="qmetaobject.html#property">TQMetaObject::property</a>() and <a href="qmetaobject.html#propertyNames">TQMetaObject::propertyNames</a>() for
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details.
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<p>See also <a href="objectmodel.html">Object Model</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn>bool <a name="designable"></a>TQMetaProperty::designable ( <a href="qobject.html">TQObject</a> * o = 0 ) const
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</h3> Returns TRUE if the property is designable for object <em>o</em>;
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otherwise returns FALSE.
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<p> If no object <em>o</em> is given, the function returns a static
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approximation.
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<h3 class=fn><a href="qstrlist.html">TQStrList</a> <a name="enumKeys"></a>TQMetaProperty::enumKeys () const
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</h3>
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Returns the possible enumeration keys if this property is an
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enumeration type (or a set type).
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<p> <p>See also <a href="#isEnumType">isEnumType</a>().
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<h3 class=fn>bool <a name="isEnumType"></a>TQMetaProperty::isEnumType () const
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</h3>
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<p> Returns TRUE if the property's type is an enumeration value;
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otherwise returns FALSE.
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<p> <p>See also <a href="#isSetType">isSetType</a>() and <a href="#enumKeys">enumKeys</a>().
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<h3 class=fn>bool <a name="isSetType"></a>TQMetaProperty::isSetType () const
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</h3>
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<p> Returns TRUE if the property's type is an enumeration value that
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is used as set, i.e. if the enumeration values can be OR-ed
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together; otherwise returns FALSE. A set type is implicitly also
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an enum type.
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<p> <p>See also <a href="#isEnumType">isEnumType</a>() and <a href="#enumKeys">enumKeys</a>().
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<h3 class=fn>int <a name="keyToValue"></a>TQMetaProperty::keyToValue ( const char * key ) const
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</h3>
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Converts the enumeration key <em>key</em> to its integer value.
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<p> For set types, use <a href="#keysToValue">keysToValue</a>().
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<p> <p>See also <a href="#valueToKey">valueToKey</a>(), <a href="#isSetType">isSetType</a>(), and <a href="#keysToValue">keysToValue</a>().
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<h3 class=fn>int <a name="keysToValue"></a>TQMetaProperty::keysToValue ( const <a href="qstrlist.html">TQStrList</a> & keys ) const
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</h3>
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Converts the list of keys <em>keys</em> to their combined (OR-ed)
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integer value.
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<p> <p>See also <a href="#isSetType">isSetType</a>() and <a href="#valueToKey">valueToKey</a>().
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<h3 class=fn>const char * <a name="name"></a>TQMetaProperty::name () const
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</h3>
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<p> Returns the name of the property.
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<h3 class=fn>bool <a name="reset"></a>TQMetaProperty::reset ( <a href="qobject.html">TQObject</a> * o ) const
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</h3>
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Tries to reset the property for object <em>o</em> with a reset method.
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On success, returns TRUE; otherwise returns FALSE.
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<p> Reset methods are optional, usually only a few properties support
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them.
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<h3 class=fn>bool <a name="scriptable"></a>TQMetaProperty::scriptable ( <a href="qobject.html">TQObject</a> * o = 0 ) const
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</h3>
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Returns TRUE if the property is scriptable for object <em>o</em>;
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otherwise returns FALSE.
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<p> If no object <em>o</em> is given, the function returns a static
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approximation.
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<h3 class=fn>bool <a name="stored"></a>TQMetaProperty::stored ( <a href="qobject.html">TQObject</a> * o = 0 ) const
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</h3>
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Returns TRUE if the property shall be stored for object <em>o</em>;
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otherwise returns FALSE.
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<p> If no object <em>o</em> is given, the function returns a static
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approximation.
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<h3 class=fn>const char * <a name="type"></a>TQMetaProperty::type () const
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</h3>
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<p> Returns the type of the property.
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<h3 class=fn>const char * <a name="valueToKey"></a>TQMetaProperty::valueToKey ( int value ) const
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</h3>
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Converts the enumeration value <em>value</em> to its literal key.
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<p> For set types, use <a href="#valueToKeys">valueToKeys</a>().
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<p> <p>See also <a href="#isSetType">isSetType</a>() and <a href="#valueToKeys">valueToKeys</a>().
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<h3 class=fn><a href="qstrlist.html">TQStrList</a> <a name="valueToKeys"></a>TQMetaProperty::valueToKeys ( int value ) const
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</h3>
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Converts the set value <em>value</em> to a list of keys.
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<p> <p>See also <a href="#isSetType">isSetType</a>() and <a href="#valueToKey">valueToKey</a>().
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<h3 class=fn>bool <a name="writable"></a>TQMetaProperty::writable () const
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</h3>
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<p> Returns TRUE if the property is writable; otherwise returns FALSE.
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<p>
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<!-- eof -->
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<hr><p>
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This file is part of the <a href="index.html">TQt toolkit</a>.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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</html>
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