NAME¶

QIntValidator - Validator which ensures that a string contains a valid integer within a specified range

SYNOPSIS¶

#include <qvalidator.h>

Inherits QValidator.

DESCRIPTION¶

The QIntValidator class provides a validator which ensures that a string contains a valid integer within a specified range.

Example of use:

    QValidator* validator = new QIntValidator( 100, 999, this );


    QLineEdit* edit = new QLineEdit( this );




    // the edit lineedit will only accept integers between 100 and 999


    edit->setValidator( validator );

Below we present some examples of validators. In practice they would normally be associated with a widget as in the example above.

    QString str;


    int pos = 0;


    QIntValidator v( 100, 999, this );




    str = "1";


    v.validate( str, pos );     // returns Intermediate


    str = "12";


    v.validate( str, pos );     // returns Intermediate




    str = "123";


    v.validate( str, pos );     // returns Acceptable


    str = "678";


    v.validate( str, pos );     // returns Acceptable




    str = "1234";


    v.validate( str, pos );     // returns Invalid


    str = "-123";


    v.validate( str, pos );     // returns Invalid


    str = "abc";


    v.validate( str, pos );     // returns Invalid


    str = "12cm";


    v.validate( str, pos );     // returns Invalid

The minimum and maximum values are set in one call with setRange() or individually with setBottom() and setTop().

See also QDoubleValidator, QRegExpValidator, and Miscellaneous Classes.

MEMBER FUNCTION DOCUMENTATION¶

QIntValidator::QIntValidator ( QObject * parent, const char * name = 0 )¶

Constructs a validator called name with parent parent, that accepts all integers.

QIntValidator::QIntValidator ( int minimum, int maximum, QObject * parent, const char * name = 0 )¶

Constructs a validator called name with parent parent, that accepts integers from minimum to maximum inclusive.

QIntValidator::~QIntValidator ()¶

Destroys the validator, freeing any resources allocated.

int QIntValidator::bottom () const¶

Returns the validator's lowest acceptable value. See the "bottom" property for details.

void QIntValidator::setBottom ( int )¶

Sets the validator's lowest acceptable value. See the "bottom" property for details.

void QIntValidator::setRange ( int bottom, int top ) [virtual]¶

Sets the range of the validator to only accept integers between bottom and top inclusive.

void QIntValidator::setTop ( int )¶

Sets the validator's highest acceptable value. See the "top" property for details.

int QIntValidator::top () const¶

Returns the validator's highest acceptable value. See the "top" property for details.

QValidator::State QIntValidator::validate ( QString & input, int & ) const [virtual]¶

Returns Acceptable if the input is an integer within the valid range, Intermediate if the input is an integer outside the valid range and Invalid if the input is not an integer.

Note: If the valid range consists of just positive integers (e.g. 32 - 100) and input is a negative integer then Invalid is returned.

    int pos = 0;


    s = "abc";


    v.validate( s, pos ); // returns Invalid




    s = "5";


    v.validate( s, pos ); // returns Intermediate




    s = "50";


    v.validate( s, pos ); // returns Valid

Reimplemented from QValidator.

int bottom¶

This property holds the validator's lowest acceptable value.

Set this property's value with setBottom() and get this property's value with bottom().

See also setRange().

int top¶

This property holds the validator's highest acceptable value.

Set this property's value with setTop() and get this property's value with top().

See also setRange().

SEE ALSO¶

http://doc.trolltech.com/qintvalidator.html http://www.trolltech.com/faq/tech.html

COPYRIGHT¶

Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com. See the license file included in the distribution for a complete license statement.

AUTHOR¶

Generated automatically from the source code.

BUGS¶

If you find a bug in Qt, please report it as described in http://doc.trolltech.com/bughowto.html. Good bug reports help us to help you. Thank you.

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.

If you find errors in this manual page, please report them to qt-bugs@trolltech.com. Please include the name of the manual page (qintvalidator.3qt) and the Qt version (3.3.8).