QIntValidator(3qt) QIntValidator(3qt)
NAME
QIntValidator - Validator which ensures that a string contains a valid integer within a specified range
SYNOPSIS
#include <qvalidator.h>
Inherits QValidator.
Public Members
QIntValidator ( QObject * parent, const char * name = 0 )
QIntValidator ( int minimum, int maximum, QObject * parent, const char * name = 0 )
~QIntValidator ()
virtual QValidator::State validate ( QString & input, int & ) const
void setBottom ( int )
void setTop ( int )
virtual void setRange ( int minimum, int maximum )
int bottom () const
int top () const
Properties
int bottom - the validator's lowest acceptable value
int top - the validator's highest acceptable value
DESCRIPTION
The QIntValidator class provides a validator which ensures that a string contains a valid integer within a specified range.
The validate() function returns Acceptable, Intermediate or Invalid. Acceptable means that the string is a valid integer within the
specified range. Intermediate means that the string is a valid integer but is not within the specified range. Invalid means that the string
is not a valid integer.
Example of use:
QIntValidator v( 0, 100, this );
QLineEdit* edit = new QLineEdit( this );
// the edit lineedit will only accept integers between 0 and 100
edit->setValidator( &v );
Below we present some examples of validators. In practice they would normally be associated with a widget as in the example above.
QString s;
QIntValidator v( 0, 100, this );
s = "10";
v.validate( s, 0 ); // returns Acceptable
s = "35";
v.validate( s, 0 ); // returns Acceptable
s = "105";
v.validate( s, 0 ); // returns Intermediate
s = "-763";
v.validate( s, 0 ); // returns Invalid
s = "abc";
v.validate( s, 0 ); // returns Invalid
s = "12v";
v.validate( s, 0 ); // 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 minimum, int maximum ) [virtual]
Sets the range of the validator to only accept integers between minimum and maximum 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.
s = "35";
v.validate( s, 0 ); // returns Acceptable
s = "105";
v.validate( s, 0 ); // returns Intermediate
s = "abc";
v.validate( s, 0 ); // returns Invalid
Reimplemented from QValidator.
Property Documentation
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 1992-2001 Trolltech AS, 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 (3.1.1).
Trolltech AS 9 December 2002 QIntValidator(3qt)