QgsDateEdit Class Reference

A QDateEdit widget with the capability of setting/reading null dates. More...

#include <qgsdatetimeedit.h>

Inheritance diagram for QgsDateEdit:

Signals
void	dateValueChanged (const QDate &date)
	Signal emitted whenever the date changes.
Signals inherited from QgsDateTimeEdit
void	valueChanged (const QDateTime &date)
	Signal emitted whenever the value changes.

Public Member Functions
	QgsDateEdit (QWidget *parent=nullptr)
	Constructor for QgsDateEdit.
void	setDate (const QDate &date)
	Sets the date for the widget and handles null dates.
Public Member Functions inherited from QgsDateTimeEdit
	QgsDateTimeEdit (QWidget *parent=nullptr)
	Constructor for QgsDateTimeEdit.
bool	allowNull () const
	If the widget allows setting null date/time.
void	clear () override
	Set the current date as NULL.
QDate	date () const
	Returns the date which can be a null date.
QDateTime	dateTime () const
	Returns the date time which can be a null date/time.
bool	event (QEvent *event) override
	Reimplemented to enable/disable the clear action depending on read-only status.
QString	nullRepresentation () const
	Returns the widget's NULL representation, which defaults to QgsApplication::nullRepresentation().
void	setAllowNull (bool allowNull)
	Determines if the widget allows setting null date/time.
void	setDateTime (const QDateTime &dateTime)
	Set the date time in the widget and handles null date times.
void	setEmpty ()
	Resets the widget to show no value (ie, an "unknown" state).
void	setNullRepresentation (const QString &null)
	Sets the widget's null representation, which defaults to QgsApplication::nullRepresentation().
QTime	time () const
	Returns the time which can be a null time.

Protected Member Functions
void	emitValueChanged (const QVariant &value) override
	Emits the widget's correct value changed signal.
Protected Member Functions inherited from QgsDateTimeEdit
void	displayNull (bool updateCalendar=false)
	write the null value representation to the line edit without changing the value
void	focusInEvent (QFocusEvent *event) override
void	focusOutEvent (QFocusEvent *event) override
bool	isNull () const
	Returns true if the widget is currently set to a null value.
void	mousePressEvent (QMouseEvent *event) override
void	showEvent (QShowEvent *event) override
void	wheelEvent (QWheelEvent *event) override

Additional Inherited Members
Protected Attributes inherited from QgsDateTimeEdit
int	mBlockChangedSignal = 0
	Block change signals if true.
bool	mIsEmpty = false
	true if the widget is empty
Properties inherited from QgsDateTimeEdit
bool	allowNull

Detailed Description

A QDateEdit widget with the capability of setting/reading null dates.

Warning

You should use the signal dateValueChanged of this subclass rather than QDateTimeEdit::dateChanged. (If you consequently connect parent's dateChanged signal and call date() afterwards there is no guarantee that NULL values will be correctly handled).

See also

QgsDateTimeEdit

QgsTimeEdit

Since

QGIS 3.14

Definition at line 275 of file qgsdatetimeedit.h.

Constructor & Destructor Documentation

QgsDateEdit()

QgsDateEdit::QgsDateEdit ( QWidget * parent = nullptr )

explicit

Constructor for QgsDateEdit.

The current time is used by default. The widget is allowing null by default. If allow null is disabled, you should check allowNull before getting values from the widget.

Definition at line 465 of file qgsdatetimeedit.cpp.

Member Function Documentation

dateValueChanged

void QgsDateEdit::dateValueChanged ( const QDate & date )

signal

Signal emitted whenever the date changes.

emitValueChanged()

void QgsDateEdit::emitValueChanged ( const QVariant & value )

overrideprotectedvirtual

Emits the widget's correct value changed signal.

Reimplemented from QgsDateTimeEdit.

Definition at line 495 of file qgsdatetimeedit.cpp.

setDate()

void QgsDateEdit::setDate

(

const QDate &

date

)

Sets the date for the widget and handles null dates.

Note

Since QDateTimeEdit::setDate() is not virtual, setDate must be called for QgsDateEdit.

Definition at line 474 of file qgsdatetimeedit.cpp.

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The documentation for this class was generated from the following files:

• /build/qgis-3.99.0+git20251210+2fe06baccd8+99sid/src/gui/editorwidgets/qgsdatetimeedit.h
• /build/qgis-3.99.0+git20251210+2fe06baccd8+99sid/src/gui/editorwidgets/qgsdatetimeedit.cpp