\inmodule QtCore More...

#include <qproperty.h>

Collaboration diagram for QPropertyBindingError:

Public Types
enum	Type { NoError , BindingLoop , EvaluationError , UnknownError }
	This enum specifies which error occurred. More...

Public Member Functions
	QPropertyBindingError ()
	Default constructs QPropertyBindingError.

	QPropertyBindingError (Type type, const QString &description=QString())
	Constructs a QPropertyBindingError of type type with description as its description.

	QPropertyBindingError (const QPropertyBindingError &other)
	Copy-constructs QPropertyBindingError from other.

QPropertyBindingError &	operator= (const QPropertyBindingError &other)
	Copies other to this QPropertyBindingError.

	QPropertyBindingError (QPropertyBindingError &&other)
	Move-constructs QPropertyBindingError from other.

QPropertyBindingError &	operator= (QPropertyBindingError &&other)
	Move-assigns other to this QPropertyBindingError.

	~QPropertyBindingError ()
	Destroys the QPropertyBindingError.

bool	hasError () const

Type	type () const
	Returns the type of the QPropertyBindingError.

QString	description () const
	Returns a descriptive error message for the QPropertyBindingError if it has been set.

Detailed Description

\inmodule QtCore

Since: 6.0

QPropertyBindingError is used by \l{The Property System}{the property system} to report errors that occurred when a binding was evaluated. Use \l type() to query which error occurred, and \l description() to extract an error message which might contain more details. If there is no error, QPropertyBindingError has type QPropertyBindingError::NoError and hasError() returns false.

extern QProperty<int> prop;
 
QPropertyBindingError error = prop.binding().error();
if (error.hasError())
     qDebug() << error.description();

Definition at line 130 of file qproperty.h.

Member Enumeration Documentation

◆ Type

enum QPropertyBindingError::Type

This enum specifies which error occurred.

\value NoError No error occurred while evaluating the binding. \value BindingLoop Binding evaluation was stopped because a property depended on its own value. \value EvaluationError Binding evaluation was stopped for any other reason than a binding loop. For example, this value is used in the QML engine when an exception occurs while a binding is evaluated. \value UnknownError A generic error type used when neither of the other values is suitable. Calling \l description() might provide details.

Enumerator
NoError
BindingLoop
EvaluationError
UnknownError

Definition at line 133 of file qproperty.h.

Constructor & Destructor Documentation

◆ QPropertyBindingError() [1/4]

QPropertyBindingError::QPropertyBindingError ( )

Default constructs QPropertyBindingError.

hasError() will return false, type will return NoError and \l description() will return an empty string.

Definition at line 877 of file qproperty.cpp.

◆ QPropertyBindingError() [2/4]

QPropertyBindingError::QPropertyBindingError	(	Type	type,
		const QString &	description = `QString()`
	)

Constructs a QPropertyBindingError of type type with description as its description.

Definition at line 885 of file qproperty.cpp.

References d, and NoError.

◆ QPropertyBindingError() [3/4]

QPropertyBindingError::QPropertyBindingError ( const QPropertyBindingError & other )

Copy-constructs QPropertyBindingError from other.

Definition at line 897 of file qproperty.cpp.

◆ QPropertyBindingError() [4/4]

QPropertyBindingError::QPropertyBindingError ( QPropertyBindingError && other )

Move-constructs QPropertyBindingError from other.

other will be left in its default state.

Definition at line 915 of file qproperty.cpp.

◆ ~QPropertyBindingError()

QPropertyBindingError::~QPropertyBindingError ( )

Destroys the QPropertyBindingError.

Definition at line 933 of file qproperty.cpp.

Member Function Documentation

◆ description()

QString QPropertyBindingError::description ( ) const

Returns a descriptive error message for the QPropertyBindingError if it has been set.

Definition at line 953 of file qproperty.cpp.

References QPropertyBindingErrorPrivate::description.

◆ hasError()

bool QPropertyBindingError::hasError ( ) const

inline

Definition at line 149 of file qproperty.h.

References d.

Referenced by QQmlAnyBinding::hasError().

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◆ operator=() [1/2]

QPropertyBindingError & QPropertyBindingError::operator= ( const QPropertyBindingError & other )

Copies other to this QPropertyBindingError.

Definition at line 905 of file qproperty.cpp.

References other().

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◆ operator=() [2/2]

QPropertyBindingError & QPropertyBindingError::operator= ( QPropertyBindingError && other )

Move-assigns other to this QPropertyBindingError.

other will be left in its default state.

Definition at line 924 of file qproperty.cpp.

References other().

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◆ type()

QPropertyBindingError::Type QPropertyBindingError::type ( ) const

Returns the type of the QPropertyBindingError.

See also: QPropertyBindingError::Type

Definition at line 942 of file qproperty.cpp.

References NoError, and QPropertyBindingErrorPrivate::type.

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

qtbase/src/corelib/kernel/qproperty.h
qtbase/src/corelib/kernel/qproperty.cpp

Public Types

Public Member Functions