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177 lines
8.5 KiB
177 lines
8.5 KiB
14 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/widgets/qvalidator.cpp:181 -->
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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>QIntValidator Class</title>
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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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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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QIntValidator Class Reference</h1>
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<p>The QIntValidator class provides a validator which ensures
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that a string contains a valid integer within a specified range.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qvalidator-h.html">qvalidator.h</a>></tt>
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<p>Inherits <a href="qvalidator.html">QValidator</a>.
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<p><a href="qintvalidator-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><a href="#QIntValidator"><b>QIntValidator</b></a> ( QObject * parent, const char * name = 0 )</li>
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<li class=fn><a href="#QIntValidator-2"><b>QIntValidator</b></a> ( int minimum, int maximum, QObject * parent, const char * name = 0 )</li>
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<li class=fn><a href="#~QIntValidator"><b>~QIntValidator</b></a> ()</li>
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<li class=fn>virtual QValidator::State <a href="#validate"><b>validate</b></a> ( QString & input, int & ) const</li>
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<li class=fn>void <a href="#setBottom"><b>setBottom</b></a> ( int )</li>
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<li class=fn>void <a href="#setTop"><b>setTop</b></a> ( int )</li>
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<li class=fn>virtual void <a href="#setRange"><b>setRange</b></a> ( int bottom, int top )</li>
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<li class=fn>int <a href="#bottom"><b>bottom</b></a> () const</li>
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<li class=fn>int <a href="#top"><b>top</b></a> () const</li>
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</ul>
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<h2>Properties</h2>
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<ul>
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<li class=fn>int <a href="#bottom-prop"><b>bottom</b></a> - the validator's lowest acceptable value</li>
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<li class=fn>int <a href="#top-prop"><b>top</b></a> - the validator's highest acceptable value</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The QIntValidator class provides a validator which ensures
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that a string contains a valid integer within a specified range.
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<p>
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<p> Example of use:
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<p> <pre>
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<a href="qvalidator.html">QValidator</a>* validator = new QIntValidator( 100, 999, this );
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<a href="qlineedit.html">QLineEdit</a>* edit = new <a href="qlineedit.html">QLineEdit</a>( this );
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// the edit lineedit will only accept integers between 100 and 999
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edit-><a href="qlineedit.html#setValidator">setValidator</a>( validator );
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</pre>
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<p> Below we present some examples of validators. In practice they would
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normally be associated with a widget as in the example above.
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<p> <pre>
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<a href="qstring.html">QString</a> str;
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int pos = 0;
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QIntValidator v( 100, 999, this );
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str = "1";
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v.<a href="#validate">validate</a>( str, pos ); // returns Intermediate
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str = "12";
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v.<a href="#validate">validate</a>( str, pos ); // returns Intermediate
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str = "123";
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v.<a href="#validate">validate</a>( str, pos ); // returns Acceptable
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str = "678";
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v.<a href="#validate">validate</a>( str, pos ); // returns Acceptable
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str = "1234";
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v.<a href="#validate">validate</a>( str, pos ); // returns Invalid
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str = "-123";
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v.<a href="#validate">validate</a>( str, pos ); // returns Invalid
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str = "abc";
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v.<a href="#validate">validate</a>( str, pos ); // returns Invalid
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str = "12cm";
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v.<a href="#validate">validate</a>( str, pos ); // returns Invalid
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</pre>
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<p> The minimum and maximum values are set in one call with <a href="#setRange">setRange</a>()
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or individually with <a href="#setBottom">setBottom</a>() and <a href="#setTop">setTop</a>().
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<p> <p>See also <a href="qdoublevalidator.html">QDoubleValidator</a>, <a href="qregexpvalidator.html">QRegExpValidator</a>, and <a href="misc.html">Miscellaneous Classes</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="QIntValidator"></a>QIntValidator::QIntValidator ( <a href="qobject.html">QObject</a> * parent, const char * name = 0 )
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</h3>
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Constructs a validator called <em>name</em> with parent <em>parent</em>, that
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accepts all integers.
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<h3 class=fn><a name="QIntValidator-2"></a>QIntValidator::QIntValidator ( int minimum, int maximum, <a href="qobject.html">QObject</a> * parent, const char * name = 0 )
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</h3>
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Constructs a validator called <em>name</em> with parent <em>parent</em>, that
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accepts integers from <em>minimum</em> to <em>maximum</em> inclusive.
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<h3 class=fn><a name="~QIntValidator"></a>QIntValidator::~QIntValidator ()
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</h3>
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Destroys the validator, freeing any resources allocated.
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<h3 class=fn>int <a name="bottom"></a>QIntValidator::bottom () const
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</h3><p>Returns the validator's lowest acceptable value.
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See the <a href="qintvalidator.html#bottom-prop">"bottom"</a> property for details.
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<h3 class=fn>void <a name="setBottom"></a>QIntValidator::setBottom ( int )
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</h3><p>Sets the validator's lowest acceptable value.
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See the <a href="qintvalidator.html#bottom-prop">"bottom"</a> property for details.
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<h3 class=fn>void <a name="setRange"></a>QIntValidator::setRange ( int bottom, int top )<tt> [virtual]</tt>
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</h3>
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Sets the range of the validator to only accept integers between <em>bottom</em> and <em>top</em> inclusive.
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<h3 class=fn>void <a name="setTop"></a>QIntValidator::setTop ( int )
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</h3><p>Sets the validator's highest acceptable value.
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See the <a href="qintvalidator.html#top-prop">"top"</a> property for details.
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<h3 class=fn>int <a name="top"></a>QIntValidator::top () const
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</h3><p>Returns the validator's highest acceptable value.
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See the <a href="qintvalidator.html#top-prop">"top"</a> property for details.
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<h3 class=fn><a href="qvalidator.html#State-enum">QValidator::State</a> <a name="validate"></a>QIntValidator::validate ( <a href="qstring.html">QString</a> & input, int & ) const<tt> [virtual]</tt>
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</h3>
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Returns <a href="qvalidator.html#State-enum">Acceptable</a> if the <em>input</em> is an integer within the
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valid range, <a href="qvalidator.html#State-enum">Intermediate</a> if the <em>input</em> is an integer outside
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the valid range and <a href="qvalidator.html#State-enum">Invalid</a> if the <em>input</em> is not an integer.
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<p> Note: If the valid range consists of just positive integers (e.g. 32 - 100)
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and <em>input</em> is a negative integer then Invalid is returned.
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<p> <pre>
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int pos = 0;
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s = "abc";
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v.validate( s, pos ); // returns Invalid
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s = "5";
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v.validate( s, pos ); // returns Intermediate
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s = "50";
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v.validate( s, pos ); // returns Valid
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</pre>
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<p>Reimplemented from <a href="qvalidator.html#validate">QValidator</a>.
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<hr><h2>Property Documentation</h2>
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<h3 class=fn>int <a name="bottom-prop"></a>bottom</h3>
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<p>This property holds the validator's lowest acceptable value.
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<p>Set this property's value with <a href="#setBottom">setBottom</a>() and get this property's value with <a href="#bottom">bottom</a>().
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<p><p>See also <a href="#setRange">setRange</a>().
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<h3 class=fn>int <a name="top-prop"></a>top</h3>
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<p>This property holds the validator's highest acceptable value.
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<p>Set this property's value with <a href="#setTop">setTop</a>() and get this property's value with <a href="#top">top</a>().
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<p><p>See also <a href="#setRange">setRange</a>().
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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">Qt 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>Qt 3.3.8</div>
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</table></div></address></body>
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</html>
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