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 ( QWidget * parent, const char * name = 0 ) 
• QDoubleValidator ( double bottom, double top, int decimals, QWidget * parent, const char * name = 0 ) 
• ~QDoubleValidator () 
• QValidator::State validate ( QString &, int & ) const
• virtual void setRange ( double bottom, double top, int decimals = 0 ) 
• void setBottom ( double ) 
• void setTop ( double ) 
• void setDecimals ( int ) 
• double bottom () const
• double top () const
• int decimals () const

Properties

Detailed Description

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.

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 lowest valid number according to this validator.

See also top(), decimals() and setRange().

int QDoubleValidator::decimals () const

Returns the largest number of digits a valid number can have after its decimal point.

See also bottom(), top() and setRange().

void QDoubleValidator::setBottom ( double bottom )

Sets the validator to accept no numbers smaller than bottom.

See also setRange().

void QDoubleValidator::setDecimals ( int decimals )

Sets the maximum number of digits after the decimal point.

void QDoubleValidator::setRange ( double bottom, double top, int decimals = 0 ) [virtual]

Sets the validator to accept numbers from bottom up to and including top with at most decimals digits after the decimal point.

void QDoubleValidator::setTop ( double top )

Sets the validator to accept no numbers bigger than top.

See also setRange().

double QDoubleValidator::top () const

Returns the highest valid number according to this validator.

See also bottom(), decimals() and setRange().

QValidator::State QDoubleValidator::validate( QString & input, int & ) const

Returns Acceptable if input contains a number in the legal range and format, Intermediate if it contains another number, a number with too many digits after the decimal point or is empty, and Invalid if input is not a number.

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