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+'\" t
+.TH QRegExpValidator 3qt "2 February 2007" "Trolltech AS" \" -*- nroff -*-
+.\" Copyright 1992-2007 Trolltech ASA.  All rights reserved.  See the
+.\" license file included in the distribution for a complete license
+.\" statement.
+.\"
+.ad l
+.nh
+.SH NAME
+QRegExpValidator \- Used to check a string against a
+.SH SYNOPSIS
+\fC#include <qvalidator.h>\fR
+.PP
+Inherits QValidator.
+.PP
+.SS "Public Members"
+.in +1c
+.ti -1c
+.BI "\fBQRegExpValidator\fR ( QObject * parent, const char * name = 0 )"
+.br
+.ti -1c
+.BI "\fBQRegExpValidator\fR ( const QRegExp & rx, QObject * parent, const char * name = 0 )"
+.br
+.ti -1c
+.BI "\fB~QRegExpValidator\fR ()"
+.br
+.ti -1c
+.BI "virtual QValidator::State \fBvalidate\fR ( QString & input, int & pos ) const"
+.br
+.ti -1c
+.BI "void \fBsetRegExp\fR ( const QRegExp & rx )"
+.br
+.ti -1c
+.BI "const QRegExp & \fBregExp\fR () const"
+.br
+.in -1c
+.SH DESCRIPTION
+The QRegExpValidator class is used to check a string against a regular expression.
+.PP
+QRegExpValidator contains a regular expression, "regexp", used to determine whether an input string is Acceptable, Intermediate or Invalid.
+.PP
+The regexp is treated as if it begins with the start of string assertion, \fB^\fR, and ends with the end of string assertion \fB$\fR so the match is against the entire input string, or from the given position if a start position greater than zero is given.
+.PP
+For a brief introduction to Qt's regexp engine see QRegExp.
+.PP
+Example of use:
+.PP
+.nf
+.br
+    // regexp: optional '-' followed by between 1 and 3 digits
+.br
+    QRegExp rx( "-?\\\\d{1,3}" );
+.br
+    QValidator* validator = new QRegExpValidator( rx, this );
+.br
+.br
+    QLineEdit* edit = new QLineEdit( this );
+.br
+    edit->setValidator( validator );
+.br
+.fi
+.PP
+Below we present some examples of validators. In practice they would normally be associated with a widget as in the example above.
+.PP
+.nf
+.br
+    // integers 1 to 9999
+.br
+    QRegExp rx( "[1-9]\\\\d{0,3}" );
+.br
+    // the validator treats the regexp as "^[1-9]\\\\d{0,3}$"
+.br
+    QRegExpValidator v( rx, 0 );
+.br
+    QString s;
+.br
+    int pos = 0;
+.br
+.br
+    s = "0";     v.validate( s, pos );    // returns Invalid
+.br
+    s = "12345"; v.validate( s, pos );    // returns Invalid
+.br
+    s = "1";     v.validate( s, pos );    // returns Acceptable
+.br
+.br
+    rx.setPattern( "\\\\S+" );            // one or more non-whitespace characters
+.br
+    v.setRegExp( rx );
+.br
+    s = "myfile.txt";  v.validate( s, pos ); // Returns Acceptable
+.br
+    s = "my file.txt"; v.validate( s, pos ); // Returns Invalid
+.br
+.br
+    // A, B or C followed by exactly five digits followed by W, X, Y or Z
+.br
+    rx.setPattern( "[A-C]\\\\d{5}[W-Z]" );
+.br
+    v.setRegExp( rx );
+.br
+    s = "a12345Z"; v.validate( s, pos );        // Returns Invalid
+.br
+    s = "A12345Z"; v.validate( s, pos );        // Returns Acceptable
+.br
+    s = "B12";     v.validate( s, pos );        // Returns Intermediate
+.br
+.br
+    // match most 'readme' files
+.br
+    rx.setPattern( "read\\\\S?me(\\.(txt|asc|1st))?" );
+.br
+    rx.setCaseSensitive( FALSE );
+.br
+    v.setRegExp( rx );
+.br
+    s = "readme";      v.validate( s, pos ); // Returns Acceptable
+.br
+    s = "README.1ST";  v.validate( s, pos ); // Returns Acceptable
+.br
+    s = "read me.txt"; v.validate( s, pos ); // Returns Invalid
+.br
+    s = "readm";       v.validate( s, pos ); // Returns Intermediate
+.br
+.fi
+.PP
+See also QRegExp, QIntValidator, QDoubleValidator, and Miscellaneous Classes.
+.SH MEMBER FUNCTION DOCUMENTATION
+.SH "QRegExpValidator::QRegExpValidator ( QObject * parent, const char * name = 0 )"
+Constructs a validator that accepts any string (including an empty one) as valid. The object's parent is \fIparent\fR and its name is \fIname\fR.
+.SH "QRegExpValidator::QRegExpValidator ( const QRegExp & rx, QObject * parent, const char * name = 0 )"
+Constructs a validator which accepts all strings that match the regular expression \fIrx\fR. The object's parent is \fIparent\fR and its name is \fIname\fR.
+.PP
+The match is made against the entire string, e.g. if the regexp is \fB[A-Fa-f0-9]+\fR it will be treated as \fB^[A-Fa-f0-9]+$\fR.
+.SH "QRegExpValidator::~QRegExpValidator ()"
+Destroys the validator, freeing any resources allocated.
+.SH "const QRegExp & QRegExpValidator::regExp () const"
+Returns the regular expression used for validation.
+.PP
+See also setRegExp().
+.SH "void QRegExpValidator::setRegExp ( const QRegExp & rx )"
+Sets the regular expression used for validation to \fIrx\fR.
+.PP
+See also regExp().
+.SH "QValidator::State QRegExpValidator::validate ( QString & input, int & pos ) const\fC [virtual]\fR"
+Returns Acceptable if \fIinput\fR is matched by the regular expression for this validator, Intermediate if it has matched partially (i.e. could be a valid match if additional valid characters are added), and Invalid if \fIinput\fR is not matched.
+.PP
+The \fIpos\fR parameter is set to the length of the \fIinput\fR parameter.
+.PP
+For example, if the regular expression is \fB&#92;w&#92;d&#92;d\fR (that is, word-character, digit, digit) then "A57" is Acceptable," E5" is Intermediate and "+9" is Invalid.
+.PP
+See also QRegExp::match() and QRegExp::search().
+.PP
+Reimplemented from QValidator.
+
+.SH "SEE ALSO"
+.BR http://doc.trolltech.com/qregexpvalidator.html
+.BR http://www.trolltech.com/faq/tech.html
+.SH COPYRIGHT
+Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com.  See the
+license file included in the distribution for a complete license
+statement.
+.SH AUTHOR
+Generated automatically from the source code.
+.SH BUGS
+If you find a bug in Qt, please report it as described in
+.BR http://doc.trolltech.com/bughowto.html .
+Good bug reports help us to help you. Thank you.
+.P
+The definitive Qt documentation is provided in HTML format; it is
+located at $QTDIR/doc/html and can be read using Qt Assistant or with
+a web browser. This man page is provided as a convenience for those
+users who prefer man pages, although this format is not officially
+supported by Trolltech. 
+.P
+If you find errors in this manual page, please report them to
+.BR qt-bugs@trolltech.com .
+Please include the name of the manual page (qregexpvalidator.3qt) and the Qt
+version (3.3.8).