Referencia de la Clase QLCDNumber

The QLCDNumber widget displays a number with LCD-like digits. Más...

#include <qlcdnumber.h>

Diagrama de herencias de QLCDNumber

Lista de todos los miembros.

Tipos públicos
enum	Mode {   Hex, Dec, Oct, Bin,   HEX = Hex, DEC = Dec, OCT = Oct, BIN = Bin,   Hex, Dec, Oct, Bin,   HEX = Hex, DEC = Dec, OCT = Oct, BIN = Bin }
enum	SegmentStyle {   Outline, Filled, Flat, Outline,   Filled, Flat }
enum	Mode {   Hex, Dec, Oct, Bin,   HEX = Hex, DEC = Dec, OCT = Oct, BIN = Bin,   Hex, Dec, Oct, Bin,   HEX = Hex, DEC = Dec, OCT = Oct, BIN = Bin }
enum	SegmentStyle {   Outline, Filled, Flat, Outline,   Filled, Flat }
Slots públicos
void	display (const QString &str)
void	display (int num)
void	display (double num)
virtual void	setHexMode ()
virtual void	setDecMode ()
virtual void	setOctMode ()
virtual void	setBinMode ()
virtual void	setSmallDecimalPoint (bool)
void	display (const QString &str)
void	display (int num)
void	display (double num)
virtual void	setHexMode ()
virtual void	setDecMode ()
virtual void	setOctMode ()
virtual void	setBinMode ()
virtual void	setSmallDecimalPoint (bool)
Señales
void	overflow ()
void	overflow ()
Métodos públicos
	QLCDNumber (QWidget *parent=0, const char *name=0)
	QLCDNumber (uint numDigits, QWidget *parent=0, const char *name=0)
	~QLCDNumber ()
bool	smallDecimalPoint () const
int	numDigits () const
virtual void	setNumDigits (int nDigits)
bool	checkOverflow (double num) const
bool	checkOverflow (int num) const
Mode	mode () const
virtual void	setMode (Mode)
SegmentStyle	segmentStyle () const
virtual void	setSegmentStyle (SegmentStyle)
double	value () const
int	intValue () const
QSize	sizeHint () const
	QLCDNumber (QWidget *parent=0, const char *name=0)
	QLCDNumber (uint numDigits, QWidget *parent=0, const char *name=0)
	~QLCDNumber ()
bool	smallDecimalPoint () const
int	numDigits () const
virtual void	setNumDigits (int nDigits)
bool	checkOverflow (double num) const
bool	checkOverflow (int num) const
Mode	mode () const
virtual void	setMode (Mode)
SegmentStyle	segmentStyle () const
virtual void	setSegmentStyle (SegmentStyle)
double	value () const
int	intValue () const
QSize	sizeHint () const
Métodos protegidos
void	drawContents (QPainter *)
void	drawContents (QPainter *)
Propiedades
bool	smallDecimalPoint
	the style of the decimal point
int	numDigits
	the current number of digits displayed
Mode	mode
	the current display mode (number base)
SegmentStyle	segmentStyle
	the style of the LCDNumber
double	value
	the displayed value
int	intValue
	the displayed value rounded to the nearest integer

---

Descripción detallada

The QLCDNumber widget displays a number with LCD-like digits.

It can display a number in just about any size. It can display decimal, hexadecimal, octal or binary numbers. It is easy to connect to data sources using the display() slot, which is overloaded to take any of five argument types.

There are also slots to change the base with setMode() and the decimal point with setSmallDecimalPoint().

QLCDNumber emits the overflow() signal when it is asked to display something beyond its range. The range is set by setNumDigits(), but setSmallDecimalPoint() also influences it. If the display is set to hexadecimal, octal or binary, the integer equivalent of the value is displayed.

These digits and other symbols can be shown: 0/O, 1, 2, 3, 4, 5/S, 6, 7, 8, 9/g, minus, decimal point, A, B, C, D, E, F, h, H, L, o, P, r, u, U, Y, colon, degree sign (which is specified as single quote in the string) and space. QLCDNumber substitutes spaces for illegal characters.

It is not possible to retrieve the contents of a QLCDNumber object, although you can retrieve the numeric value with value(). If you really need the text, we recommend that you connect the signals that feed the display() slot to another slot as well and store the value there.

Incidentally, QLCDNumber is the very oldest part of Qt, tracing back to a BASIC program on the Sinclair Spectrum.

Ver también:

QLabel, QFrame

---

Documentación de las enumeraciones miembro de la clase

enum QLCDNumber::Mode

This type determines how numbers are shown.

Hex Hexadecimal Dec Decimal Oct Octal Bin Binary

If the display is set to hexadecimal, octal or binary, the integer equivalent of the value is displayed.

Valores de enumeraciones:

Hex
Dec
Oct
Bin
HEX
DEC
OCT
BIN
Hex
Dec
Oct
Bin
HEX
DEC
OCT
BIN

enum QLCDNumber::Mode

Valores de enumeraciones:

Hex
Dec
Oct
Bin
HEX
DEC
OCT
BIN
Hex
Dec
Oct
Bin
HEX
DEC
OCT
BIN

enum QLCDNumber::SegmentStyle

Valores de enumeraciones:

Outline
Filled
Flat
Outline
Filled
Flat

enum QLCDNumber::SegmentStyle

This type determines the visual appearance of the QLCDNumber widget.

Outline gives raised segments filled with the background brush. Filled gives raised segments filled with the foreground brush. Flat gives flat segments filled with the foreground brush.

Valores de enumeraciones:

Outline
Filled
Flat
Outline
Filled
Flat

---

Documentación del constructor y destructor

QLCDNumber::QLCDNumber	(	QWidget *	parent = 0,
		const char *	name = 0
	)

Constructs an LCD number, sets the number of digits to 5, the base to decimal, the decimal point mode to 'small' and the frame style to a raised box. The segmentStyle() is set to Outline.

The parent and name arguments are passed to the QFrame constructor.

Ver también:

setNumDigits(), setSmallDecimalPoint()

QLCDNumber::QLCDNumber	(	uint	numDigits,
		QWidget *	parent = 0,
		const char *	name = 0
	)

Constructs an LCD number, sets the number of digits to numDigits, the base to decimal, the decimal point mode to 'small' and the frame style to a raised box. The segmentStyle() is set to Outline.

The parent and name arguments are passed to the QFrame constructor.

Ver también:

setNumDigits(), setSmallDecimalPoint()

QLCDNumber::~QLCDNumber

(

)

Destroys the LCD number.

QLCDNumber::QLCDNumber	(	QWidget *	parent = 0,
		const char *	name = 0
	)

QLCDNumber::QLCDNumber	(	uint	numDigits,
		QWidget *	parent = 0,
		const char *	name = 0
	)

QLCDNumber::~QLCDNumber

(

)

---

Documentación de las funciones miembro

bool QLCDNumber::checkOverflow

(

double

num

)

const

Returns TRUE if num is too big to be displayed in its entirety; otherwise returns FALSE.

Ver también:

display(), numDigits(), smallDecimalPoint()

bool QLCDNumber::checkOverflow

(

int

num

)

const

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Returns TRUE if num is too big to be displayed in its entirety; otherwise returns FALSE.

Ver también:

display(), numDigits(), smallDecimalPoint()

bool QLCDNumber::checkOverflow

(

double

num

)

const

bool QLCDNumber::checkOverflow

(

int

num

)

const

void QLCDNumber::display

(

const QString &

str

)

[slot]

void QLCDNumber::display

(

int

num

)

[slot]

void QLCDNumber::display

(

double

num

)

[slot]

void QLCDNumber::display

(

const QString &

s

)

[slot]

Displays the number represented by the string s.

This version of the function disregards mode() and smallDecimalPoint().

These digits and other symbols can be shown: 0/O, 1, 2, 3, 4, 5/S, 6, 7, 8, 9/g, minus, decimal point, A, B, C, D, E, F, h, H, L, o, P, r, u, U, Y, colon, degree sign (which is specified as single quote in the string) and space. QLCDNumber substitutes spaces for illegal characters.

void QLCDNumber::display

(

int

num

)

[slot]

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Displays the number num.

void QLCDNumber::display

(

double

num

)

[slot]

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Displays the number num.

void QLCDNumber::drawContents

(

QPainter *

p

)

[protected, virtual]

Draws the LCD number using painter p. This function is called from QFrame::paintEvent().

Reimplementado de QFrame.

void QLCDNumber::drawContents

(

QPainter *

)

[protected, virtual]

Virtual function that draws the contents of the frame.

The QPainter is already open when you get it, and you must leave it open. Painter transformations are switched off on entry. If you transform the painter, remember to take the frame into account and reset transformation before returning.

This function is reimplemented by subclasses that draw something inside the frame. It should only draw inside contentsRect(). The default function does nothing.

Ver también:

contentsRect(), QPainter::setClipRect()

Reimplementado de QFrame.

int QLCDNumber::intValue

(

)

const

int QLCDNumber::intValue

(

)

const

Mode QLCDNumber::mode

(

)

const

Mode QLCDNumber::mode

(

)

const

int QLCDNumber::numDigits

(

)

const

int QLCDNumber::numDigits

(

)

const

void QLCDNumber::overflow

(

)

[signal]

This signal is emitted whenever the QLCDNumber is asked to display a too-large number or a too-long string.

It is never emitted by setNumDigits().

void QLCDNumber::overflow

(

)

[signal]

SegmentStyle QLCDNumber::segmentStyle

(

)

const

SegmentStyle QLCDNumber::segmentStyle

(

)

const

void QLCDNumber::setBinMode

(

)

[virtual, slot]

Calls setMode( BIN ). Provided for convenience (e.g. for connecting buttons to it).

Ver también:

setMode(), setHexMode(), setDecMode(), setOctMode(), mode()

virtual void QLCDNumber::setBinMode

(

)

[virtual, slot]

void QLCDNumber::setDecMode

(

)

[virtual, slot]

Calls setMode( DEC ). Provided for convenience (e.g. for connecting buttons to it).

Ver también:

setMode(), setHexMode(), setOctMode(), setBinMode(), mode()

virtual void QLCDNumber::setDecMode

(

)

[virtual, slot]

void QLCDNumber::setHexMode

(

)

[virtual, slot]

Calls setMode( HEX ). Provided for convenience (e.g. for connecting buttons to it).

Ver también:

setMode(), setDecMode(), setOctMode(), setBinMode(), mode()

virtual void QLCDNumber::setHexMode

(

)

[virtual, slot]

virtual void QLCDNumber::setMode

(

Mode

)

[virtual]

void QLCDNumber::setMode

(

Mode

m

)

[virtual]

virtual void QLCDNumber::setNumDigits

(

int

nDigits

)

[virtual]

void QLCDNumber::setNumDigits

(

int

nDigits

)

[virtual]

void QLCDNumber::setOctMode

(

)

[virtual, slot]

Calls setMode( OCT ). Provided for convenience (e.g. for connecting buttons to it).

Ver también:

setMode(), setHexMode(), setDecMode(), setBinMode(), mode()

virtual void QLCDNumber::setOctMode

(

)

[virtual, slot]

void QLCDNumber::setSegmentStyle

(

SegmentStyle

s

)

[virtual]

virtual void QLCDNumber::setSegmentStyle

(

SegmentStyle

)

[virtual]

void QLCDNumber::setSmallDecimalPoint

(

bool

b

)

[virtual, slot]

virtual void QLCDNumber::setSmallDecimalPoint

(

bool

)

[virtual, slot]

QSize QLCDNumber::sizeHint

(

)

const [virtual]

Reimplementado de QFrame.

QSize QLCDNumber::sizeHint

(

)

const [virtual]

Reimplementado de QFrame.

bool QLCDNumber::smallDecimalPoint

(

)

const

bool QLCDNumber::smallDecimalPoint

(

)

const

double QLCDNumber::value

(

)

const

double QLCDNumber::value

(

)

const

---

Documentación de propiedades

int QLCDNumber::intValue [read, write]

the displayed value rounded to the nearest integer

This property corresponds to the nearest integer to the current value displayed by the LCDNumber. This is the value used for hexadecimal, octal and binary modes.

If the displayed value is not a number, the property has a value of 0.

Mode QLCDNumber::mode [read, write]

the current display mode (number base)

Corresponds to the current display mode, which is one of BIN, OCT, DEC (the default) and HEX. DEC mode can display floating point values, the other modes display the integer equivalent.

Ver también:

smallDecimalPoint(), setHexMode(), setDecMode(), setOctMode(), setBinMode()

int QLCDNumber::numDigits [inline, read, write]

the current number of digits displayed

Corresponds to the current number of digits. If QLCDNumber::smallDecimalPoint is FALSE, the decimal point occupies one digit position.

Ver también:

numDigits, smallDecimalPoint

SegmentStyle QLCDNumber::segmentStyle [read, write]

the style of the LCDNumber

Style Result Outline Produces raised segments filled with the background color (this is the default). Filled Produces raised segments filled with the foreground color. Flat Produces flat segments filled with the foreground color.

Outline and Filled will additionally use QColorGroup::light() and QColorGroup::dark() for shadow effects.

bool QLCDNumber::smallDecimalPoint [inline, read, write]

the style of the decimal point

If TRUE the decimal point is drawn between two digit positions. Otherwise it occupies a digit position of its own, i.e. is drawn in a digit position. The default is FALSE.

The inter-digit space is made slightly wider when the decimal point is drawn between the digits.

Ver también:

mode

double QLCDNumber::value [read, write]

the displayed value

This property corresponds to the current value displayed by the LCDNumber.

If the displayed value is not a number, the property has a value of 0.

---

La documentación para esta clase fue generada a partir de los siguientes ficheros:

• src/qt/include/qlcdnumber.h
• src/qt/src/widgets/qlcdnumber.h
• src/qt/src/.moc/release-shared-mt/moc_qlcdnumber.cpp
• src/qt/src/widgets/qlcdnumber.cpp