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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
| commit | bd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch) | |
| tree | 7a520322212d48ebcb9fbe1087e7fca28b76185c /doc/html/qregexpvalidator.html | |
| download | qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip | |
Add Qt3 development HEAD version
Diffstat (limited to 'doc/html/qregexpvalidator.html')
| -rw-r--r-- | doc/html/qregexpvalidator.html | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/doc/html/qregexpvalidator.html b/doc/html/qregexpvalidator.html new file mode 100644 index 0000000..bb70075 --- /dev/null +++ b/doc/html/qregexpvalidator.html @@ -0,0 +1,161 @@ +<!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:517 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>QRegExpValidator 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>QRegExpValidator Class Reference</h1> + +<p>The QRegExpValidator class is used to check a string +against a regular expression. +<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="qregexpvalidator-members.html">List of all member functions.</a> +<h2>Public Members</h2> +<ul> +<li class=fn><a href="#QRegExpValidator"><b>QRegExpValidator</b></a> ( QObject * parent, const char * name = 0 )</li> +<li class=fn><a href="#QRegExpValidator-2"><b>QRegExpValidator</b></a> ( const QRegExp & rx, QObject * parent, const char * name = 0 )</li> +<li class=fn><a href="#~QRegExpValidator"><b>~QRegExpValidator</b></a> ()</li> +<li class=fn>virtual QValidator::State <a href="#validate"><b>validate</b></a> ( QString & input, int & pos ) const</li> +<li class=fn>void <a href="#setRegExp"><b>setRegExp</b></a> ( const QRegExp & rx )</li> +<li class=fn>const QRegExp & <a href="#regExp"><b>regExp</b></a> () const</li> +</ul> +<hr><a name="details"></a><h2>Detailed Description</h2> + + +The QRegExpValidator class is used to check a string +against a <a href="qregexp.html#regular-expression">regular expression</a>. +<p> +<p> QRegExpValidator contains a regular expression, "regexp", used to +determine whether an input string is <a href="qvalidator.html#State-enum">Acceptable</a>, <a href="qvalidator.html#State-enum">Intermediate</a> or <a href="qvalidator.html#State-enum">Invalid</a>. +<p> The regexp is treated as if it begins with the start of string +assertion, <b>^</b>, and ends with the end of string assertion +<b>$</b> so the match is against the entire input string, or from +the given position if a start position greater than zero is given. +<p> For a brief introduction to Qt's regexp engine see <a href="qregexp.html">QRegExp</a>. +<p> Example of use: +<pre> + // regexp: optional '-' followed by between 1 and 3 digits + <a href="qregexp.html">QRegExp</a> rx( "-?\\d{1,3}" ); + <a href="qvalidator.html">QValidator</a>* validator = new QRegExpValidator( rx, this ); + + <a href="qlineedit.html">QLineEdit</a>* edit = new <a href="qlineedit.html">QLineEdit</a>( this ); + edit-><a href="qlineedit.html#setValidator">setValidator</a>( validator ); + </pre> + +<p> Below we present some examples of validators. In practice they would +normally be associated with a widget as in the example above. +<p> <pre> + // integers 1 to 9999 + <a href="qregexp.html">QRegExp</a> rx( "[1-9]\\d{0,3}" ); + // the validator treats the regexp as "^[1-9]\\d{0,3}$" + QRegExpValidator v( rx, 0 ); + <a href="qstring.html">QString</a> s; + int pos = 0; + + s = "0"; v.<a href="#validate">validate</a>( s, pos ); // returns Invalid + s = "12345"; v.<a href="#validate">validate</a>( s, pos ); // returns Invalid + s = "1"; v.<a href="#validate">validate</a>( s, pos ); // returns Acceptable + + rx.<a href="qregexp.html#setPattern">setPattern</a>( "\\S+" ); // one or more non-whitespace characters + v.<a href="#setRegExp">setRegExp</a>( rx ); + s = "myfile.txt"; v.<a href="#validate">validate</a>( s, pos ); // Returns Acceptable + s = "my file.txt"; v.<a href="#validate">validate</a>( s, pos ); // Returns Invalid + + // A, B or C followed by exactly five digits followed by W, X, Y or Z + rx.<a href="qregexp.html#setPattern">setPattern</a>( "[A-C]\\d{5}[W-Z]" ); + v.<a href="#setRegExp">setRegExp</a>( rx ); + s = "a12345Z"; v.<a href="#validate">validate</a>( s, pos ); // Returns Invalid + s = "A12345Z"; v.<a href="#validate">validate</a>( s, pos ); // Returns Acceptable + s = "B12"; v.<a href="#validate">validate</a>( s, pos ); // Returns Intermediate + + // match most 'readme' files + rx.<a href="qregexp.html#setPattern">setPattern</a>( "read\\S?me(\.(txt|asc|1st))?" ); + rx.<a href="qregexp.html#setCaseSensitive">setCaseSensitive</a>( FALSE ); + v.<a href="#setRegExp">setRegExp</a>( rx ); + s = "readme"; v.<a href="#validate">validate</a>( s, pos ); // Returns Acceptable + s = "README.1ST"; v.<a href="#validate">validate</a>( s, pos ); // Returns Acceptable + s = "read me.txt"; v.<a href="#validate">validate</a>( s, pos ); // Returns Invalid + s = "readm"; v.<a href="#validate">validate</a>( s, pos ); // Returns Intermediate + </pre> + +<p> <p>See also <a href="qregexp.html">QRegExp</a>, <a href="qintvalidator.html">QIntValidator</a>, <a href="qdoublevalidator.html">QDoubleValidator</a>, and <a href="misc.html">Miscellaneous Classes</a>. + +<hr><h2>Member Function Documentation</h2> +<h3 class=fn><a name="QRegExpValidator"></a>QRegExpValidator::QRegExpValidator ( <a href="qobject.html">QObject</a> * parent, const char * name = 0 ) +</h3> +Constructs a validator that accepts any string (including an empty +one) as valid. The object's parent is <em>parent</em> and its name is <em>name</em>. + +<h3 class=fn><a name="QRegExpValidator-2"></a>QRegExpValidator::QRegExpValidator ( const <a href="qregexp.html">QRegExp</a> & rx, <a href="qobject.html">QObject</a> * parent, const char * name = 0 ) +</h3> +Constructs a validator which accepts all strings that match the +<a href="qregexp.html#regular-expression">regular expression</a> <em>rx</em>. The object's parent is <em>parent</em> and its +name is <em>name</em>. +<p> The match is made against the entire string, e.g. if the regexp is +<b>[A-Fa-f0-9]+</b> it will be treated as <b>^[A-Fa-f0-9]+$</b>. + +<h3 class=fn><a name="~QRegExpValidator"></a>QRegExpValidator::~QRegExpValidator () +</h3> +Destroys the validator, freeing any resources allocated. + +<h3 class=fn>const <a href="qregexp.html">QRegExp</a> & <a name="regExp"></a>QRegExpValidator::regExp () const +</h3> + +<p> Returns the <a href="qregexp.html#regular-expression">regular expression</a> used for validation. +<p> <p>See also <a href="#setRegExp">setRegExp</a>(). + +<h3 class=fn>void <a name="setRegExp"></a>QRegExpValidator::setRegExp ( const <a href="qregexp.html">QRegExp</a> & rx ) +</h3> +Sets the <a href="qregexp.html#regular-expression">regular expression</a> used for validation to <em>rx</em>. +<p> <p>See also <a href="#regExp">regExp</a>(). + +<h3 class=fn><a href="qvalidator.html#State-enum">QValidator::State</a> <a name="validate"></a>QRegExpValidator::validate ( <a href="qstring.html">QString</a> & input, int & pos ) const<tt> [virtual]</tt> +</h3> +Returns <a href="qvalidator.html#State-enum">Acceptable</a> if <em>input</em> is matched by the <a href="qregexp.html#regular-expression">regular expression</a> for this validator, <a href="qvalidator.html#State-enum">Intermediate</a> if it has matched +partially (i.e. could be a valid match if additional valid +characters are added), and <a href="qvalidator.html#State-enum">Invalid</a> if <em>input</em> is not matched. +<p> The <em>pos</em> parameter is set to the length of the <em>input</em> parameter. +<p> For example, if the regular expression is <b>\w\d\d</b> (that +is, word-character, digit, digit) then "A57" is <a href="qvalidator.html#State-enum">Acceptable</a>, +"E5" is <a href="qvalidator.html#State-enum">Intermediate</a> and "+9" is <a href="qvalidator.html#State-enum">Invalid</a>. +<p> <p>See also <a href="qregexp.html#match">QRegExp::match</a>() and <a href="qregexp.html#search">QRegExp::search</a>(). + +<p>Reimplemented from <a href="qvalidator.html#validate">QValidator</a>. +<!-- eof --> +<hr><p> +This file is part of the <a href="index.html">Qt toolkit</a>. +Copyright © 1995-2007 +<a href="http://www.trolltech.com/">Trolltech</a>. 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