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| 6 | <title>QDoubleValidator Class</title>
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| 32 | <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>
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| 33 |
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| 34 | <p>The QDoubleValidator class provides range checking of
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| 35 | floating-point numbers.
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| 36 | <a href="#details">More...</a>
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| 37 | <p><tt>#include <<a href="qvalidator-h.html">qvalidator.h</a>></tt>
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| 38 | <p>Inherits <a href="qvalidator.html">QValidator</a>.
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| 39 | <p><a href="qdoublevalidator-members.html">List of all member functions.</a>
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| 40 | <h2>Public Members</h2>
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| 41 | <ul>
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| 42 | <li class=fn><a href="#QDoubleValidator"><b>QDoubleValidator</b></a> ( QObject * parent, const char * name = 0 )</li>
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| 43 | <li class=fn><a href="#QDoubleValidator-2"><b>QDoubleValidator</b></a> ( double bottom, double top, int decimals, QObject * parent, const char * name = 0 )</li>
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| 44 | <li class=fn><a href="#~QDoubleValidator"><b>~QDoubleValidator</b></a> ()</li>
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| 45 | <li class=fn>virtual QValidator::State <a href="#validate"><b>validate</b></a> ( QString & input, int & ) const</li>
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| 46 | <li class=fn>virtual void <a href="#setRange"><b>setRange</b></a> ( double minimum, double maximum, int decimals = 0 )</li>
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| 47 | <li class=fn>void <a href="#setBottom"><b>setBottom</b></a> ( double )</li>
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| 48 | <li class=fn>void <a href="#setTop"><b>setTop</b></a> ( double )</li>
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| 49 | <li class=fn>void <a href="#setDecimals"><b>setDecimals</b></a> ( int )</li>
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| 50 | <li class=fn>double <a href="#bottom"><b>bottom</b></a> () const</li>
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| 51 | <li class=fn>double <a href="#top"><b>top</b></a> () const</li>
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| 52 | <li class=fn>int <a href="#decimals"><b>decimals</b></a> () const</li>
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| 53 | </ul>
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| 54 | <h2>Properties</h2>
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| 55 | <ul>
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| 56 | <li class=fn>double <a href="#bottom-prop"><b>bottom</b></a> - the validator's minimum acceptable value</li>
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| 57 | <li class=fn>int <a href="#decimals-prop"><b>decimals</b></a> - the validator's maximum number of digits after the decimal point</li>
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| 58 | <li class=fn>double <a href="#top-prop"><b>top</b></a> - the validator's maximum acceptable value</li>
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| 59 | </ul>
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| 60 | <hr><a name="details"></a><h2>Detailed Description</h2>
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| 61 |
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| 62 |
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| 63 | <p> The QDoubleValidator class provides range checking of
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| 64 | floating-point numbers.
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| 65 | <p>
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| 66 | <p> QDoubleValidator provides an upper bound, a lower bound and a
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| 67 | limit on the number of digits after the decimal point. It does not
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| 68 | provide a <a href="qvalidator.html#fixup">fixup</a>() function.
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| 69 | <p> You can set the acceptable range in one call with <a href="#setRange">setRange</a>(), or
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| 70 | with <a href="#setBottom">setBottom</a>() and <a href="#setTop">setTop</a>(). Set the number of decimal places
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| 71 | with <a href="#setDecimals">setDecimals</a>(). The <a href="#validate">validate</a>() function returns the validation
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| 72 | state.
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| 73 | <p> <p>See also <a href="qintvalidator.html">QIntValidator</a>, <a href="qregexpvalidator.html">QRegExpValidator</a>, and <a href="misc.html">Miscellaneous Classes</a>.
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| 74 |
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| 75 | <hr><h2>Member Function Documentation</h2>
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| 76 | <h3 class=fn><a name="QDoubleValidator"></a>QDoubleValidator::QDoubleValidator ( <a href="qobject.html">QObject</a> * parent, const char * name = 0 )
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| 77 | </h3>
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| 78 | Constructs a validator object with parent <em>parent</em>, called <em>name</em>, which accepts any double.
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| 79 |
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| 80 | <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 )
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| 81 | </h3>
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| 82 | 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>
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| 83 | inclusive, with up to <em>decimals</em> digits after the decimal point.
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| 84 |
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| 85 | <h3 class=fn><a name="~QDoubleValidator"></a>QDoubleValidator::~QDoubleValidator ()
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| 86 | </h3>
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| 87 | Destroys the validator, freeing any resources used.
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| 88 |
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| 89 | <h3 class=fn>double <a name="bottom"></a>QDoubleValidator::bottom () const
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| 90 | </h3><p>Returns the validator's minimum acceptable value.
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| 91 | See the <a href="qdoublevalidator.html#bottom-prop">"bottom"</a> property for details.
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| 92 | <h3 class=fn>int <a name="decimals"></a>QDoubleValidator::decimals () const
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| 93 | </h3><p>Returns the validator's maximum number of digits after the decimal point.
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| 94 | See the <a href="qdoublevalidator.html#decimals-prop">"decimals"</a> property for details.
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| 95 | <h3 class=fn>void <a name="setBottom"></a>QDoubleValidator::setBottom ( double )
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| 96 | </h3><p>Sets the validator's minimum acceptable value.
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| 97 | See the <a href="qdoublevalidator.html#bottom-prop">"bottom"</a> property for details.
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| 98 | <h3 class=fn>void <a name="setDecimals"></a>QDoubleValidator::setDecimals ( int )
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| 99 | </h3><p>Sets the validator's maximum number of digits after the decimal point.
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| 100 | See the <a href="qdoublevalidator.html#decimals-prop">"decimals"</a> property for details.
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| 101 | <h3 class=fn>void <a name="setRange"></a>QDoubleValidator::setRange ( double minimum, double maximum, int decimals = 0 )<tt> [virtual]</tt>
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| 102 | </h3>
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| 103 | Sets the validator to accept doubles from <em>minimum</em> to <em>maximum</em>
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| 104 | inclusive, with at most <em>decimals</em> digits after the decimal
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| 105 | point.
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| 106 |
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| 107 | <h3 class=fn>void <a name="setTop"></a>QDoubleValidator::setTop ( double )
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| 108 | </h3><p>Sets the validator's maximum acceptable value.
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| 109 | See the <a href="qdoublevalidator.html#top-prop">"top"</a> property for details.
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| 110 | <h3 class=fn>double <a name="top"></a>QDoubleValidator::top () const
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| 111 | </h3><p>Returns the validator's maximum acceptable value.
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| 112 | See the <a href="qdoublevalidator.html#top-prop">"top"</a> property for details.
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| 113 | <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>
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| 114 | </h3>
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| 115 | Returns <a href="qvalidator.html#State-enum">Acceptable</a> if the string <em>input</em> contains a double
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| 116 | that is within the valid range and is in the correct format.
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| 117 | <p> Returns <a href="qvalidator.html#State-enum">Intermediate</a> if <em>input</em> contains a double that is
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| 118 | outside the range or is in the wrong format, e.g. with too many
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| 119 | digits after the decimal point or is empty.
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| 120 | <p> Returns <a href="qvalidator.html#State-enum">Invalid</a> if the <em>input</em> is not a double.
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| 121 | <p> Note: If the valid range consists of just positive doubles (e.g. 0.0 - 100.0)
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| 122 | and <em>input</em> is a negative double then Invalid is returned.
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| 123 |
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| 124 | <p>Reimplemented from <a href="qvalidator.html#validate">QValidator</a>.
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| 125 | <hr><h2>Property Documentation</h2>
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| 126 | <h3 class=fn>double <a name="bottom-prop"></a>bottom</h3>
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| 127 | <p>This property holds the validator's minimum acceptable value.
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| 128 | <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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| 129 | <p><p>See also <a href="#setRange">setRange</a>().
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| 130 |
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| 131 | <h3 class=fn>int <a name="decimals-prop"></a>decimals</h3>
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| 132 | <p>This property holds the validator's maximum number of digits after the decimal point.
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| 133 | <p>Set this property's value with <a href="#setDecimals">setDecimals</a>() and get this property's value with <a href="#decimals">decimals</a>().
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| 134 | <p><p>See also <a href="#setRange">setRange</a>().
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| 135 |
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| 136 | <h3 class=fn>double <a name="top-prop"></a>top</h3>
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| 137 | <p>This property holds the validator's maximum acceptable value.
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| 138 | <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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| 139 | <p><p>See also <a href="#setRange">setRange</a>().
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| 140 |
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| 141 | <!-- eof -->
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| 142 | <hr><p>
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| 143 | This file is part of the <a href="index.html">Qt toolkit</a>.
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| 144 | Copyright © 1995-2007
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| 145 | <a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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| 146 | <table width=100% cellspacing=0 border=0><tr>
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| 147 | <td>Copyright © 2007
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| 148 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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| 149 | <td align=right><div align=right>Qt 3.3.8</div>
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| 150 | </table></div></address></body>
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| 151 | </html>
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