QDoubleValidator Class Reference
The QDoubleValidator class provides range checking of
floating-point numbers.
More...
#include <qvalidator.h>
Inherits QValidator.
List of all member functions.
Public Members
QDoubleValidator ( double bottom, double top, int decimals, QWidget * parent, const char * name = 0 )
virtual QValidator::State
validate ( QString & input, int & ) const
virtual void
setRange ( double minimum, double maximum, int decimals = 0 )
Properties
double
bottom - the validator's minimum acceptable value
double
top - the validator's maximum acceptable value
int
decimals - the validator's maximum number of digits after the decimal point
Detailed Description
The QDoubleValidator class provides range checking of
floating-point numbers.
QDoubleValidator provides an upper bound, a lower bound and a limit
on the number of digits after the decimal point. It does not
provide a fixup() function.
See also QIntValidator and QRegExpValidator.
Member Function Documentation
QDoubleValidator::QDoubleValidator ( QWidget * parent, const char * name = 0 )
Constructs a validator object which accepts all doubles.
QDoubleValidator::QDoubleValidator ( double bottom, double top, int decimals, QWidget * parent, const char * name = 0 )
Constructs a validator object which accepts all doubles from bottom up to and including top with at most decimals digits
after the decimal point.
QDoubleValidator::~QDoubleValidator ()
Destroys the validator, freeing any storage and other resources
used.
double QDoubleValidator::bottom () const
Returns the validator's minimum acceptable value. See the "bottom" property for details.
int QDoubleValidator::decimals () const
Returns the validator's maximum number of digits after the decimal point. See the "decimals" property for details.
void QDoubleValidator::setBottom ( double )
Sets the validator's minimum acceptable value. See the "bottom" property for details.
void QDoubleValidator::setDecimals ( int )
Sets the validator's maximum number of digits after the decimal point. See the "decimals" property for details.
void QDoubleValidator::setRange ( double minimum, double maximum, int decimals = 0 ) [virtual]
Sets the validator to accept numbers from minimum up to and
including maximum with at most decimals digits after the decimal
point.
void QDoubleValidator::setTop ( double )
Sets the validator's maximum acceptable value. See the "top" property for details.
double QDoubleValidator::top () const
Returns the validator's maximum acceptable value. See the "top" property for details.
QValidator::State QDoubleValidator::validate ( QString & input, int & ) const [virtual]
Returns Acceptable if input contains a number that is within
the valid range and is in the correct format; Intermediate if it
contains a number that is outside the range or is in the wrong format,
e.g. with too many digits after the decimal point or is empty; and Invalid if the input is not a number.
Reimplemented from QValidator.
Property Documentation
double bottom
This property holds the validator's minimum acceptable value.
Set this property's value with setBottom() and get this property's value with bottom().
See also setRange().
int decimals
This property holds the validator's maximum number of digits after the decimal point.
Set this property's value with setDecimals() and get this property's value with decimals().
See also setRange().
double top
This property holds the validator's maximum acceptable value.
Set this property's value with setTop() and get this property's value with top().
See also setRange().
Search the documentation, FAQ, qt-interest archive and more (uses
www.trolltech.com):
This file is part of the Qt toolkit,
copyright © 1995-2000
Trolltech, all rights reserved.
Copyright © 2000 Trolltech | Trademarks
| Qt version main-beta1
|