QIntValidator(3qt)

📦 version 3.3.8b, in fedora 43, fedora 44

💖 QIntValidator — the manual page (section 3qt) 💖

okay bestie, sit down, hydrate, because we're about to talk about QIntValidator and she is lowkey iconic. this is the Qt 3 manual page for her, section 3qt, and yes she's the one who checks that a string is a real integer chilling inside a range you picked. no cap. 🎀

✨ NAME ✨

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

🌸 SYNOPSIS 🌸

#include <qvalidator.h>

she Inherits QValidator. family tree moment 🫶

👑 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 bottom, int top )
  • 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. that's the whole job, and she does it flawlessly, periodt. ✨

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

see how she just knows? "12cm" said no ma'am. 😭

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. every single one. she's not picky here bestie, the whole integer buffet is open. 🍓

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. bye girl, thank you for your service 🫡💜

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. she said positivity only, no negativity allowed in this household 💀
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.

🌈 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 🔥

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. (the source code said it, not me, i'm just the messenger bestie 💅)

🙈 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. (yes queen, help them help you, it's giving community 🫶)

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).

and that's the whole page, no skips, no summaries, every single option accounted for ✨

written by Trolltech AS, dated 2 February 2007, filed under QIntValidator(3qt) — mwah, go validate something 💖🎀🦋

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