内容

• 公共类型
• 特性
• 公共函数
• 重实现公共函数
• 公共槽
• 信号
• 保护函数
• 重实现保护函数
• 详细描述
• 使用弹出日历 Widget

QDateTimeEdit 类

QDateTimeEdit 类提供用于编辑日期和时间的 Widget。 更多...

头：	#include <QDateTimeEdit>
qmake:	QT += widgets
继承：	QAbstractSpinBox
继承者：	QDateEdit and QTimeEdit

• 所有成员列表，包括继承成员

公共类型

enum	Section { NoSection, AmPmSection, MSecSection, SecondSection, ..., YearSection }
flags	Sections

特性

calendarPopup : bool currentSection : Section currentSectionIndex : int date : QDate dateTime : QDateTime displayFormat : QString displayedSections : const Sections maximumDate : QDate

maximumDateTime : QDateTime maximumTime : QTime minimumDate : QDate minimumDateTime : QDateTime minimumTime : QTime sectionCount : const int time : QTime timeSpec : Qt::TimeSpec

• 12 特性继承自 QAbstractSpinBox
• 59 特性继承自 QWidget
• 1 特性继承自 QObject

公共函数

	QDateTimeEdit (QWidget * parent = Q_NULLPTR)
	QDateTimeEdit (const QDateTime & datetime , QWidget * parent = Q_NULLPTR)
	QDateTimeEdit (const QDate & date , QWidget * parent = Q_NULLPTR)
	QDateTimeEdit (const QTime & time , QWidget * parent = Q_NULLPTR)
	~QDateTimeEdit ()
bool	calendarPopup () const
QCalendarWidget *	calendarWidget () const
void	clearMaximumDate ()
void	clearMaximumDateTime ()
void	clearMaximumTime ()
void	clearMinimumDate ()
void	clearMinimumDateTime ()
void	clearMinimumTime ()
Section	currentSection () const
int	currentSectionIndex () const
QDate	date () const
QDateTime	dateTime () const
QString	displayFormat () const
Sections	displayedSections () const
QDate	maximumDate () const
QDateTime	maximumDateTime () const
QTime	maximumTime () const
QDate	minimumDate () const
QDateTime	minimumDateTime () const
QTime	minimumTime () const
Section	sectionAt (int index ) const
int	sectionCount () const
QString	sectionText (Section section ) const
void	setCalendarPopup (bool enable )
void	setCalendarWidget (QCalendarWidget * calendarWidget )
void	setCurrentSection (Section section )
void	setCurrentSectionIndex (int index )
void	setDateRange (const QDate & min , const QDate & max )
void	setDateTimeRange (const QDateTime & min , const QDateTime & max )
void	setDisplayFormat (const QString & format )
void	setMaximumDate (const QDate & max )
void	setMaximumDateTime (const QDateTime & dt )
void	setMaximumTime (const QTime & max )
void	setMinimumDate (const QDate & min )
void	setMinimumDateTime (const QDateTime & dt )
void	setMinimumTime (const QTime & min )
void	setSelectedSection (Section section )
void	setTimeRange (const QTime & min , const QTime & max )
void	setTimeSpec (Qt::TimeSpec spec )
QTime	time () const
Qt::TimeSpec	timeSpec () const

重实现公共函数

virtual void	clear () override
virtual bool	event (QEvent * event ) override
virtual QSize	sizeHint () const override
virtual void	stepBy (int steps ) override

• 30 公共函数继承自 QAbstractSpinBox
• 214 公共函数继承自 QWidget
• 32 公共函数继承自 QObject
• 14 公共函数继承自 QPaintDevice

公共槽

void	setDate (const QDate & date )
void	setDateTime (const QDateTime & dateTime )
void	setTime (const QTime & time )

• 4 公共槽继承自 QAbstractSpinBox
• 19 公共槽继承自 QWidget
• 1 公共槽继承自 QObject

信号

void	dateChanged (const QDate & date )
void	dateTimeChanged (const QDateTime & datetime )
void	timeChanged (const QTime & time )

• 1 信号继承自 QAbstractSpinBox
• 3 信号继承自 QWidget
• 2 信号继承自 QObject

保护函数

virtual QDateTime	dateTimeFromText (const QString & text ) const
void	initStyleOption (QStyleOptionSpinBox * option ) const
virtual QString	textFromDateTime (const QDateTime & dateTime ) const

重实现保护函数

virtual void	fixup (QString & input ) const override
virtual void	focusInEvent (QFocusEvent * event ) override
virtual bool	focusNextPrevChild (bool next ) override
virtual void	keyPressEvent (QKeyEvent * event ) override
virtual void	mousePressEvent (QMouseEvent * event ) override
virtual void	paintEvent (QPaintEvent * event ) override
virtual StepEnabled	stepEnabled () const override
virtual QValidator::State	validate (QString & text , int & pos ) const override
virtual void	wheelEvent (QWheelEvent * event ) override

• 20 保护函数继承自 QAbstractSpinBox
• 35 保护函数继承自 QWidget
• 9 保护函数继承自 QObject
• 1 保护函数继承自 QPaintDevice

额外继承成员

• 5 静态公共成员继承自 QWidget
• 11 静态公共成员继承自 QObject
• 1 保护槽继承自 QWidget

详细描述

QDateTimeEdit 类提供用于编辑日期和时间的 Widget。

QDateTimeEdit allows the user to edit dates by using the keyboard or the arrow keys to increase and decrease date and time values. The arrow keys can be used to move from section to section within the QDateTimeEdit box. Dates and times appear in accordance with the format set; see setDisplayFormat ().

QDateTimeEdit *dateEdit = new QDateTimeEdit(QDate::currentDate());
dateEdit->setMinimumDate(QDate::currentDate().addDays(-365));
dateEdit->setMaximumDate(QDate::currentDate().addDays(365));
dateEdit->setDisplayFormat("yyyy.MM.dd");
					

Here we've created a new QDateTimeEdit object initialized with today's date, and restricted the valid date range to today plus or minus 365 days. We've set the order to month, day, year.

The minimum value for QDateTimeEdit is 14 September 1752. You can change this by calling setMinimumDate (), taking into account that the minimum value for QDate is 2 January 4713BC.

Other useful functions are setMaximumDate (), setMinimumTime () 和 setMaximumTime ().

使用弹出日历 Widget

QDateTimeEdit can be configured to allow a QCalendarWidget to be used to select dates. This is enabled by setting the calendarPopup property. Additionally, you can supply a custom calendar widget for use as the calendar pop-up by calling the setCalendarWidget () function. The existing calendar widget can be retrieved with calendarWidget ().

另请参阅 QDateEdit , QTimeEdit , QDate ，和 QTime .

成员类型文档编制

enum QDateTimeEdit:: Section
flags QDateTimeEdit:: Sections

常量	值
QDateTimeEdit::NoSection	0x0000
QDateTimeEdit::AmPmSection	0x0001
QDateTimeEdit::MSecSection	0x0002
QDateTimeEdit::SecondSection	0x0004
QDateTimeEdit::MinuteSection	0x0008
QDateTimeEdit::HourSection	0x0010
QDateTimeEdit::DaySection	0x0100
QDateTimeEdit::MonthSection	0x0200
QDateTimeEdit::YearSection	0x0400

The Sections type is a typedef for QFlags <Section>. It stores an OR combination of Section values.

特性文档编制

calendarPopup : bool

This property holds the current calendar pop-up show mode.

The calendar pop-up will be shown upon clicking the arrow button. This property is valid only if there is a valid date display format.

该特性在 Qt 4.2 引入。

访问函数：

bool	calendarPopup () const
void	setCalendarPopup (bool enable )

另请参阅 setDisplayFormat ().

currentSection : Section

This property holds the current section of the spinbox setCurrentSection()

访问函数：

Section	currentSection () const
void	setCurrentSection (Section section )

currentSectionIndex : int

This property holds the current section index of the spinbox

If the format is 'yyyy/MM/dd', the displayText is '2001/05/21', and the cursorPosition is 5, currentSectionIndex returns 1. If the cursorPosition is 3, currentSectionIndex is 0, and so on.

setCurrentSection()

该特性在 Qt 4.3 引入。

访问函数：

int	currentSectionIndex () const
void	setCurrentSectionIndex (int index )

另请参阅 currentSection ().

date : QDate

此特性保持 QDate that is set in the widget

By default, this property contains a date that refers to January 1, 2000.

访问函数：

QDate	date () const
void	setDate (const QDate & date )

通知程序信号：

void	dateChanged (const QDate & date )

另请参阅 time and dateTime .

dateTime : QDateTime

此特性保持 QDateTime that is set in the QDateTimeEdit

When setting this property the timespec of the QDateTimeEdit remains the same and the timespec of the new QDateTime 被忽略。

By default, this property contains a date that refers to January 1, 2000 and a time of 00:00:00 and 0 milliseconds.

访问函数：

QDateTime	dateTime () const
void	setDateTime (const QDateTime & dateTime )

通知程序信号：

void	dateTimeChanged (const QDateTime & datetime )

另请参阅 date and time .

displayFormat : QString

This property holds the format used to display the time/date of the date time edit

This format is described in QDateTime::toString () 和 QDateTime::fromString ()

Example format strings (assuming that the date is 2nd of July 1969):

格式	结果
dd.MM.yyyy	02.07.1969
MMM d yy	Jul 2 69
MMMM d yy	July 2 69

Note that if you specify a two digit year, it will be interpreted to be in the century in which the date time edit was initialized. The default century is the 21 (2000-2099).

If you specify an invalid format the format will not be set.

访问函数：

QString	displayFormat () const
void	setDisplayFormat (const QString & format )

另请参阅 QDateTime::toString () 和 displayedSections ().

displayedSections : const Sections

This property holds the currently displayed fields of the date time edit

Returns a bit set of the displayed sections for this format. setDisplayFormat() , displayFormat ()

访问函数：

Sections

displayedSections () const

maximumDate : QDate

This property holds the maximum date of the date time edit

When setting this property the minimumDate is adjusted if necessary to ensure that the range remains valid. If the date is not a valid QDate object, this function does nothing.

By default, this property contains a date that refers to December 31, 7999.

访问函数：

QDate	maximumDate () const
void	setMaximumDate (const QDate & max )
void	clearMaximumDate ()

另请参阅 minimumDate , minimumTime , maximumTime ，和 setDateRange ().

maximumDateTime : QDateTime

This property holds the maximum datetime of the date time edit

When setting this property the minimumDateTime () is adjusted if necessary to ensure that the range remains valid. If the datetime is not a valid QDateTime object, this function does nothing.

The default maximumDateTime can be restored with clearMaximumDateTime().

By default, this property contains a date that refers to 31 December, 7999 and a time of 23:59:59 and 999 milliseconds.

该特性在 Qt 4.4 引入。

访问函数：

QDateTime	maximumDateTime () const
void	setMaximumDateTime (const QDateTime & dt )
void	clearMaximumDateTime ()

另请参阅 minimumDateTime (), minimumTime (), maximumTime (), minimumDate (), maximumDate (), setDateTimeRange (), setDateRange (), setTimeRange (), clearMinimumDateTime (), clearMinimumDate (), clearMaximumDate (), clearMinimumTime ()，和 clearMaximumTime ().

maximumTime : QTime

This property holds the maximum time of the date time edit

当设置此特性时， minimumTime is adjusted if necessary to ensure that the range remains valid. If the time is not a valid QTime object, this function does nothing.

By default, this property contains a time of 23:59:59 and 999 milliseconds.

访问函数：

QTime	maximumTime () const
void	setMaximumTime (const QTime & max )
void	clearMaximumTime ()

另请参阅 minimumTime , minimumDate , maximumDate ，和 setTimeRange ().

minimumDate : QDate

This property holds the minimum date of the date time edit

When setting this property the maximumDate is adjusted if necessary, to ensure that the range remains valid. If the date is not a valid QDate object, this function does nothing.

By default, this property contains a date that refers to September 14, 1752. The minimum date must be at least the first day in year 100, otherwise setMinimumDate() has no effect.

访问函数：

QDate	minimumDate () const
void	setMinimumDate (const QDate & min )
void	clearMinimumDate ()

另请参阅 minimumTime (), maximumTime ()，和 setDateRange ().

minimumDateTime : QDateTime

This property holds the minimum datetime of the date time edit

When setting this property the maximumDateTime () is adjusted if necessary to ensure that the range remains valid. If the datetime is not a valid QDateTime object, this function does nothing.

The default minimumDateTime can be restored with clearMinimumDateTime()

By default, this property contains a date that refers to September 14, 1752 and a time of 00:00:00 and 0 milliseconds.

该特性在 Qt 4.4 引入。

访问函数：

QDateTime	minimumDateTime () const
void	setMinimumDateTime (const QDateTime & dt )
void	clearMinimumDateTime ()

另请参阅 maximumDateTime (), minimumTime (), maximumTime (), minimumDate (), maximumDate (), setDateTimeRange (), setDateRange (), setTimeRange (), clearMaximumDateTime (), clearMinimumDate (), clearMaximumDate (), clearMinimumTime ()，和 clearMaximumTime ().

minimumTime : QTime

This property holds the minimum time of the date time edit

When setting this property the maximumTime is adjusted if necessary, to ensure that the range remains valid. If the time is not a valid QTime object, this function does nothing.

默认情况下，此特性包含时间 00:00:00 和 0 毫秒。

访问函数：

QTime	minimumTime () const
void	setMinimumTime (const QTime & min )
void	clearMinimumTime ()

另请参阅 maximumTime , minimumDate , maximumDate ，和 setTimeRange ().

sectionCount : const int

This property holds the number of sections displayed. If the format is 'yyyy/yy/yyyy', sectionCount returns 3

该特性在 Qt 4.3 引入。

访问函数：

int	sectionCount () const

time : QTime

此特性保持 QTime that is set in the widget

默认情况下，此特性包含时间 00:00:00 和 0 毫秒。

访问函数：

QTime	time () const
void	setTime (const QTime & time )

通知程序信号：

void	timeChanged (const QTime & time )

另请参阅 date and dateTime .

timeSpec : Qt::TimeSpec

This property holds the current timespec used by the date time edit.

该特性在 Qt 4.4 引入。

访问函数：

Qt::TimeSpec	timeSpec () const
void	setTimeSpec (Qt::TimeSpec spec )

成员函数文档编制

QDateTimeEdit:: QDateTimeEdit ( QWidget * parent = Q_NULLPTR)

构造空的日期时间编辑器采用 parent .

QDateTimeEdit:: QDateTimeEdit (const QDateTime & datetime , QWidget * parent = Q_NULLPTR)

构造空的日期时间编辑器采用 parent . The value is set to datetime .

QDateTimeEdit:: QDateTimeEdit (const QDate & date , QWidget * parent = Q_NULLPTR)

构造空的日期时间编辑器采用 parent . The value is set to date .

QDateTimeEdit:: QDateTimeEdit (const QTime & time , QWidget * parent = Q_NULLPTR)

构造空的日期时间编辑器采用 parent . The value is set to time .

QDateTimeEdit:: ~QDateTimeEdit ()

析构函数。

QCalendarWidget *QDateTimeEdit:: calendarWidget () const

Returns the calendar widget for the editor if calendarPopup is set to true and ( sections () & DateSections_Mask ) != 0.

This function creates and returns a calendar widget if none has been set.

该函数在 Qt 4.4 引入。

另请参阅 setCalendarWidget ().

[override virtual] void QDateTimeEdit:: clear ()

重实现自 QAbstractSpinBox::clear ().

QDate QDateTimeEdit:: date () const

返回日期时间编辑的日期。

注意： Getter 函数对于特性 date .

另请参阅 setDate ().

[signal] void QDateTimeEdit:: dateChanged (const QDate & date )

This signal is emitted whenever the date is changed. The new date is passed in date .

注意： 通知程序信号对于特性 date .

[signal] void QDateTimeEdit:: dateTimeChanged (const QDateTime & datetime )

This signal is emitted whenever the date or time is changed. The new date and time is passed in datetime .

注意： 通知程序信号对于特性 dateTime .

[virtual protected] QDateTime QDateTimeEdit:: dateTimeFromText (const QString & text ) const

返回适当日期时间为给定 text .

This virtual function is used by the datetime edit whenever it needs to interpret text entered by the user as a value.

另请参阅 textFromDateTime () 和 validate ().

[override virtual] bool QDateTimeEdit:: event ( QEvent * event )

重实现自 QObject::event ().

[override virtual protected] void QDateTimeEdit:: fixup ( QString & input ) const

重实现自 QAbstractSpinBox::fixup ().

[override virtual protected] void QDateTimeEdit:: focusInEvent ( QFocusEvent * event )

重实现自 QWidget::focusInEvent ().

[override virtual protected] bool QDateTimeEdit:: focusNextPrevChild ( bool next )

重实现自 QWidget::focusNextPrevChild ().

[protected] void QDateTimeEdit:: initStyleOption ( QStyleOptionSpinBox * option ) const

初始化 option with the values from this QDataTimeEdit. This method is useful for subclasses when they need a QStyleOptionSpinBox ，但不希望自己填充所有信息。

另请参阅 QStyleOption::initFrom ().

[override virtual protected] void QDateTimeEdit:: keyPressEvent ( QKeyEvent * event )

重实现自 QWidget::keyPressEvent ().

[override virtual protected] void QDateTimeEdit:: mousePressEvent ( QMouseEvent * event )

重实现自 QWidget::mousePressEvent ().

[override virtual protected] void QDateTimeEdit:: paintEvent ( QPaintEvent * event )

重实现自 QWidget::paintEvent ().

Section QDateTimeEdit:: sectionAt ( int index ) const

Returns the Section at index .

If the format is 'yyyy/MM/dd', sectionAt(0) returns YearSection , sectionAt(1) returns MonthSection , and sectionAt(2) returns YearSection ,

该函数在 Qt 4.3 引入。

QString QDateTimeEdit:: sectionText ( Section section ) const

Returns the text from the given section .

另请参阅 currentSection ().

void QDateTimeEdit:: setCalendarWidget ( QCalendarWidget * calendarWidget )

设置给定 calendarWidget as the widget to be used for the calendar pop-up. The editor does not automatically take ownership of the calendar widget.

注意： calendarPopup must be set to true before setting the calendar widget.

该函数在 Qt 4.4 引入。

另请参阅 calendarWidget () 和 calendarPopup .

void QDateTimeEdit:: setDateRange (const QDate & min , const QDate & max )

Convenience function to set minimum and maximum date with one function call.

setDateRange(min, max);
					

is analogous to:

setMinimumDate(min);
setMaximumDate(max);
					

If either min or max are not valid, this function does nothing.

另请参阅 setMinimumDate (), maximumDate (), setMaximumDate (), clearMinimumDate (), setMinimumTime (), maximumTime (), setMaximumTime (), clearMinimumTime ()，和 QDate::isValid ().

void QDateTimeEdit:: setDateTimeRange (const QDateTime & min , const QDateTime & max )

Convenience function to set minimum and maximum date time with one function call.

setDateTimeRange(min, max);
					

is analogous to:

setMinimumDateTime(min);
setMaximumDateTime(max);
					

If either min or max are not valid, this function does nothing.

该函数在 Qt 4.4 引入。

另请参阅 setMinimumDate (), maximumDate (), setMaximumDate (), clearMinimumDate (), setMinimumTime (), maximumTime (), setMaximumTime (), clearMinimumTime ()，和 QDateTime::isValid ().

void QDateTimeEdit:: setSelectedSection ( Section section )

Selects section 。若 section doesn't exist in the currently displayed sections, this function does nothing. If section is NoSection , this function will unselect all text in the editor. Otherwise, this function will move the cursor and the current section to the selected section.

该函数在 Qt 4.2 引入。

另请参阅 currentSection ().

void QDateTimeEdit:: setTimeRange (const QTime & min , const QTime & max )

Convenience function to set minimum and maximum time with one function call.

setTimeRange(min, max);
					

is analogous to:

setMinimumTime(min);
setMaximumTime(max);
					

If either min or max are not valid, this function does nothing.

另请参阅 setMinimumDate (), maximumDate (), setMaximumDate (), clearMinimumDate (), setMinimumTime (), maximumTime (), setMaximumTime (), clearMinimumTime ()，和 QTime::isValid ().

[override virtual] QSize QDateTimeEdit:: sizeHint () const

重实现自 QWidget::sizeHint ().

[override virtual] void QDateTimeEdit:: stepBy ( int steps )

重实现自 QAbstractSpinBox::stepBy ().

[override virtual protected] StepEnabled QDateTimeEdit:: stepEnabled () const

重实现自 QAbstractSpinBox::stepEnabled ().

[virtual protected] QString QDateTimeEdit:: textFromDateTime (const QDateTime & dateTime ) const

This virtual function is used by the date time edit whenever it needs to display dateTime .

If you reimplement this, you may also need to reimplement validate ().

另请参阅 dateTimeFromText () 和 validate ().

QTime QDateTimeEdit:: time () const

返回日期时间编辑的时间。

注意： Getter 函数对于特性 time .

另请参阅 setTime ().

[signal] void QDateTimeEdit:: timeChanged (const QTime & time )

This signal is emitted whenever the time is changed. The new time is passed in time .

注意： 通知程序信号对于特性 time .

[override virtual protected] QValidator::State QDateTimeEdit:: validate ( QString & text , int & pos ) const

重实现自 QAbstractSpinBox::validate ().

[override virtual protected] void QDateTimeEdit:: wheelEvent ( QWheelEvent * event )

重实现自 QWidget::wheelEvent ().