<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/widgets/qvalidator.cpp:348 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>QDoubleValidator Class</title> <style type="text/css"><!-- fn { margin-left: 1cm; text-indent: -1cm; } a:link { color: #004faf; text-decoration: none } a:visited { color: #672967; text-decoration: none } body { background: #ffffff; color: black; } --></style> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr bgcolor="#E5E5E5"> <td valign=center> <a href="index.html"> <font color="#004faf">Home</font></a> | <a href="classes.html"> <font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"> <font color="#004faf">Main Classes</font></a> | <a href="annotated.html"> <font color="#004faf">Annotated</font></a> | <a href="groups.html"> <font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"> <font color="#004faf">Functions</font></a> </td> <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QDoubleValidator Class Reference</h1> <p>The QDoubleValidator class provides range checking of floating-point numbers. <a href="#details">More...</a> <p><tt>#include <<a href="qvalidator-h.html">qvalidator.h</a>></tt> <p>Inherits <a href="qvalidator.html">QValidator</a>. <p><a href="qdoublevalidator-members.html">List of all member functions.</a> <h2>Public Members</h2> <ul> <li class=fn><a href="#QDoubleValidator"><b>QDoubleValidator</b></a> ( QObject * parent, const char * name = 0 )</li> <li class=fn><a href="#QDoubleValidator-2"><b>QDoubleValidator</b></a> ( double bottom, double top, int decimals, QObject * parent, const char * name = 0 )</li> <li class=fn><a href="#~QDoubleValidator"><b>~QDoubleValidator</b></a> ()</li> <li class=fn>virtual QValidator::State <a href="#validate"><b>validate</b></a> ( QString & input, int & ) const</li> <li class=fn>virtual void <a href="#setRange"><b>setRange</b></a> ( double minimum, double maximum, int decimals = 0 )</li> <li class=fn>void <a href="#setBottom"><b>setBottom</b></a> ( double )</li> <li class=fn>void <a href="#setTop"><b>setTop</b></a> ( double )</li> <li class=fn>void <a href="#setDecimals"><b>setDecimals</b></a> ( int )</li> <li class=fn>double <a href="#bottom"><b>bottom</b></a> () const</li> <li class=fn>double <a href="#top"><b>top</b></a> () const</li> <li class=fn>int <a href="#decimals"><b>decimals</b></a> () const</li> </ul> <h2>Properties</h2> <ul> <li class=fn>double <a href="#bottom-prop"><b>bottom</b></a> - the validator's minimum acceptable value</li> <li class=fn>int <a href="#decimals-prop"><b>decimals</b></a> - the validator's maximum number of digits after the decimal point</li> <li class=fn>double <a href="#top-prop"><b>top</b></a> - the validator's maximum acceptable value</li> </ul> <hr><a name="details"></a><h2>Detailed Description</h2> <p> The QDoubleValidator class provides range checking of floating-point numbers. <p> <p> QDoubleValidator provides an upper bound, a lower bound and a limit on the number of digits after the decimal point. It does not provide a <a href="qvalidator.html#fixup">fixup</a>() function. <p> You can set the acceptable range in one call with <a href="#setRange">setRange</a>(), or with <a href="#setBottom">setBottom</a>() and <a href="#setTop">setTop</a>(). Set the number of decimal places with <a href="#setDecimals">setDecimals</a>(). The <a href="#validate">validate</a>() function returns the validation state. <p> <p>See also <a href="qintvalidator.html">QIntValidator</a>, <a href="qregexpvalidator.html">QRegExpValidator</a>, and <a href="misc.html">Miscellaneous Classes</a>. <hr><h2>Member Function Documentation</h2> <h3 class=fn><a name="QDoubleValidator"></a>QDoubleValidator::QDoubleValidator ( <a href="qobject.html">QObject</a> * parent, const char * name = 0 ) </h3> Constructs a validator object with parent <em>parent</em>, called <em>name</em>, which accepts any double. <h3 class=fn><a name="QDoubleValidator-2"></a>QDoubleValidator::QDoubleValidator ( double bottom, double top, int decimals, <a href="qobject.html">QObject</a> * parent, const char * name = 0 ) </h3> Constructs a validator object with parent <em>parent</em>, called <em>name</em>. This validator will accept doubles from <em>bottom</em> to <em>top</em> inclusive, with up to <em>decimals</em> digits after the decimal point. <h3 class=fn><a name="~QDoubleValidator"></a>QDoubleValidator::~QDoubleValidator () </h3> Destroys the validator, freeing any resources used. <h3 class=fn>double <a name="bottom"></a>QDoubleValidator::bottom () const </h3><p>Returns the validator's minimum acceptable value. See the <a href="qdoublevalidator.html#bottom-prop">"bottom"</a> property for details. <h3 class=fn>int <a name="decimals"></a>QDoubleValidator::decimals () const </h3><p>Returns the validator's maximum number of digits after the decimal point. See the <a href="qdoublevalidator.html#decimals-prop">"decimals"</a> property for details. <h3 class=fn>void <a name="setBottom"></a>QDoubleValidator::setBottom ( double ) </h3><p>Sets the validator's minimum acceptable value. See the <a href="qdoublevalidator.html#bottom-prop">"bottom"</a> property for details. <h3 class=fn>void <a name="setDecimals"></a>QDoubleValidator::setDecimals ( int ) </h3><p>Sets the validator's maximum number of digits after the decimal point. See the <a href="qdoublevalidator.html#decimals-prop">"decimals"</a> property for details. <h3 class=fn>void <a name="setRange"></a>QDoubleValidator::setRange ( double minimum, double maximum, int decimals = 0 )<tt> [virtual]</tt> </h3> Sets the validator to accept doubles from <em>minimum</em> to <em>maximum</em> inclusive, with at most <em>decimals</em> digits after the decimal point. <h3 class=fn>void <a name="setTop"></a>QDoubleValidator::setTop ( double ) </h3><p>Sets the validator's maximum acceptable value. See the <a href="qdoublevalidator.html#top-prop">"top"</a> property for details. <h3 class=fn>double <a name="top"></a>QDoubleValidator::top () const </h3><p>Returns the validator's maximum acceptable value. See the <a href="qdoublevalidator.html#top-prop">"top"</a> property for details. <h3 class=fn><a href="qvalidator.html#State-enum">QValidator::State</a> <a name="validate"></a>QDoubleValidator::validate ( <a href="qstring.html">QString</a> & input, int & ) const<tt> [virtual]</tt> </h3> Returns <a href="qvalidator.html#State-enum">Acceptable</a> if the string <em>input</em> contains a double that is within the valid range and is in the correct format. <p> Returns <a href="qvalidator.html#State-enum">Intermediate</a> if <em>input</em> contains a double that is outside the range or is in the wrong format, e.g. with too many digits after the decimal point or is empty. <p> Returns <a href="qvalidator.html#State-enum">Invalid</a> if the <em>input</em> is not a double. <p> Note: If the valid range consists of just positive doubles (e.g. 0.0 - 100.0) and <em>input</em> is a negative double then Invalid is returned. <p>Reimplemented from <a href="qvalidator.html#validate">QValidator</a>. <hr><h2>Property Documentation</h2> <h3 class=fn>double <a name="bottom-prop"></a>bottom</h3> <p>This property holds the validator's minimum acceptable value. <p>Set this property's value with <a href="#setBottom">setBottom</a>() and get this property's value with <a href="#bottom">bottom</a>(). <p><p>See also <a href="#setRange">setRange</a>(). <h3 class=fn>int <a name="decimals-prop"></a>decimals</h3> <p>This property holds the validator's maximum number of digits after the decimal point. <p>Set this property's value with <a href="#setDecimals">setDecimals</a>() and get this property's value with <a href="#decimals">decimals</a>(). <p><p>See also <a href="#setRange">setRange</a>(). <h3 class=fn>double <a name="top-prop"></a>top</h3> <p>This property holds the validator's maximum acceptable value. <p>Set this property's value with <a href="#setTop">setTop</a>() and get this property's value with <a href="#top">top</a>(). <p><p>See also <a href="#setRange">setRange</a>(). <!-- eof --> <hr><p> This file is part of the <a href="index.html">Qt toolkit</a>. 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