\inmodule QtQml More...

#include <qqmlinfo.h>

Inheritance diagram for QQmlInfo:

Collaboration diagram for QQmlInfo:

Public Member Functions
	QQmlInfo (const QQmlInfo &)

	~QQmlInfo ()

QQmlInfo &	operator<< (QChar t)

QQmlInfo &	operator<< (bool t)

QQmlInfo &	operator<< (char t)

QQmlInfo &	operator<< (signed short t)

QQmlInfo &	operator<< (unsigned short t)

QQmlInfo &	operator<< (signed int t)

QQmlInfo &	operator<< (unsigned int t)

QQmlInfo &	operator<< (signed long t)

QQmlInfo &	operator<< (unsigned long t)

QQmlInfo &	operator<< (qint64 t)

QQmlInfo &	operator<< (quint64 t)

QQmlInfo &	operator<< (float t)

QQmlInfo &	operator<< (double t)

QQmlInfo &	operator<< (const char *t)

QQmlInfo &	operator<< (const QString &t)

QQmlInfo &	operator<< (QStringView t)

QQmlInfo &	operator<< (const QLatin1String &t)

QQmlInfo &	operator<< (const QByteArray &t)

QQmlInfo &	operator<< (const void *t)

QQmlInfo &	operator<< (QTextStreamFunction f)

QQmlInfo &	operator<< (QTextStreamManipulator m)

QQmlInfo &	operator<< (const QUrl &t)

Friends
Q_QML_EXPORT QQmlInfo	qmlDebug (const QObject *me)

Q_QML_EXPORT QQmlInfo	qmlDebug (const QObject *me, const QQmlError &error)

Q_QML_EXPORT QQmlInfo	qmlDebug (const QObject *me, const QList< QQmlError > &errors)

Q_QML_EXPORT QQmlInfo	qmlInfo (const QObject *me)
	Prints informational messages that include the file and line number for the specified QML object.

Q_QML_EXPORT QQmlInfo	qmlInfo (const QObject *me, const QQmlError &error)

Q_QML_EXPORT QQmlInfo	qmlInfo (const QObject *me, const QList< QQmlError > &errors)

Q_QML_EXPORT QQmlInfo	qmlWarning (const QObject *me)

Q_QML_EXPORT QQmlInfo	qmlWarning (const QObject *me, const QQmlError &error)

Q_QML_EXPORT QQmlInfo	qmlWarning (const QObject *me, const QList< QQmlError > &errors)

Related Symbols
(Note that these are not member symbols.)
QQmlInfo	qmlInfo (const QObject *object)
	Prints informational messages that include the file and line number for the specified QML object.

QQmlInfo	qmlWarning (const QObject *object)

Related Symbols inherited from QDebug
template< class T > QDebug	operator<< (QDebug debug, const QList< T > &list)
	Writes the contents of list to debug.

template< class T, qsizetype P > QDebug	operator<< (QDebug debug, const QVarLengthArray< T, P > &array)

template< typename T, typename Alloc > QDebug	operator<< (QDebug debug, const std::list< T, Alloc > &vec)

template< typename T, typename Alloc > QDebug	operator<< (QDebug debug, const std::vector< T, Alloc > &vec)

template< typename T > QDebug	operator<< (QDebug debug, const QSet< T > &set)
	Writes the contents of set to debug.

template< class Key, class T > QDebug	operator<< (QDebug debug, const QMap< Key, T > &map)
	Writes the contents of map to debug.

template< class Key, class T > QDebug	operator<< (QDebug debug, const QMultiMap< Key, T > &map)
	Writes the contents of map to debug.

template< typename Key, typename T, typename Compare, typename Alloc > QDebug	operator<< (QDebug debug, const std::map< Key, T, Compare, Alloc > &map)

template< typename Key, typename T, typename Compare, typename Alloc > QDebug	operator<< (QDebug debug, const std::multimap< Key, T, Compare, Alloc > &map)

template< class Key, class T > QDebug	operator<< (QDebug debug, const QHash< Key, T > &hash)
	Writes the contents of hash to debug.

template< class Key, class T > QDebug	operator<< (QDebug debug, const QMultiHash< Key, T > &hash)
	Writes the contents of hash to debug.

template< class T1, class T2 > QDebug	operator<< (QDebug debug, const std::pair< T1, T2 > &pair)
	Writes the contents of pair to debug.

template< class T > QDebug	operator<< (QDebug debug, const std::optional< T > &opt)

template< typename T > QDebug	operator<< (QDebug debug, const QContiguousCache< T > &cache)
	Writes the contents of cache to debug.

template< typename T > QDebug	operator<< (QDebug debug, const QFlags< T > &flags)

	operator<< (QDebug d, QAnyStringView s)

Detailed Description

\inmodule QtQml

The QQmlInfo class allows logging of QML-related messages.

QQmlInfo is an opaque handle for QML-related diagnostic messages. You can use the {<<} operator to add content to the message. When the QQmlInfo object is destroyed, it prints the resulting message along with information on the context.

See also: qmlDebug, qmlInfo, qmlWarning

Definition at line 29 of file qqmlinfo.h.

Constructor & Destructor Documentation

◆ QQmlInfo()

QQmlInfo::QQmlInfo ( const QQmlInfo & other )

Definition at line 167 of file qqmlinfo.cpp.

References QQmlInfoPrivate::ref.

◆ ~QQmlInfo()

QQmlInfo::~QQmlInfo ( )

Definition at line 173 of file qqmlinfo.cpp.

References QQmlInfoPrivate::buffer, engine, error, QQmlInfoPrivate::errors, QQmlData::get(), QString::isEmpty(), QQmlInfoPrivate::msgType, QQmlInfoPrivate::object, QString::prepend(), QQmlMetaType::prettyTypeName(), qmlEngine(), QQmlInfoPrivate::ref, and QQmlEnginePrivate::warning().

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Member Function Documentation

◆ operator<<() [1/22]

QQmlInfo & QQmlInfo::operator<< ( bool t )

inline

Definition at line 36 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [2/22]

QQmlInfo & QQmlInfo::operator<< ( char t )

inline

Definition at line 37 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [3/22]

QQmlInfo & QQmlInfo::operator<< ( const char * t )

inline

Definition at line 48 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [4/22]

QQmlInfo & QQmlInfo::operator<< ( const QByteArray & t )

inline

Definition at line 52 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [5/22]

QQmlInfo & QQmlInfo::operator<< ( const QLatin1String & t )

inline

Definition at line 51 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [6/22]

QQmlInfo & QQmlInfo::operator<< ( const QString & t )

inline

Definition at line 49 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [7/22]

QQmlInfo & QQmlInfo::operator<< ( const QUrl & t )

inline

Definition at line 57 of file qqmlinfo.h.

◆ operator<<() [8/22]

QQmlInfo & QQmlInfo::operator<< ( const void * t )

inline

Definition at line 53 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [9/22]

QQmlInfo & QQmlInfo::operator<< ( double t )

inline

Definition at line 47 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [10/22]

QQmlInfo & QQmlInfo::operator<< ( float t )

inline

Definition at line 46 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [11/22]

QQmlInfo & QQmlInfo::operator<< ( QChar t )

inline

Definition at line 35 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [12/22]

QQmlInfo & QQmlInfo::operator<< ( qint64 t )

inline

Definition at line 44 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [13/22]

QQmlInfo & QQmlInfo::operator<< ( QStringView t )

inline

Definition at line 50 of file qqmlinfo.h.

References operator<<().

Referenced by operator<<().

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◆ operator<<() [14/22]

QQmlInfo & QQmlInfo::operator<< ( QTextStreamFunction f )

inline

Definition at line 54 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [15/22]

QQmlInfo & QQmlInfo::operator<< ( QTextStreamManipulator m )

inline

Definition at line 55 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [16/22]

QQmlInfo & QQmlInfo::operator<< ( quint64 t )

inline

Definition at line 45 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [17/22]

QQmlInfo & QQmlInfo::operator<< ( signed int t )

inline

Definition at line 40 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [18/22]

QQmlInfo & QQmlInfo::operator<< ( signed long t )

inline

Definition at line 42 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [19/22]

QQmlInfo & QQmlInfo::operator<< ( signed short t )

inline

Definition at line 38 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [20/22]

QQmlInfo & QQmlInfo::operator<< ( unsigned int t )

inline

Definition at line 41 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [21/22]

QQmlInfo & QQmlInfo::operator<< ( unsigned long t )

inline

Definition at line 43 of file qqmlinfo.h.

References QDebug::operator<<().

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◆ operator<<() [22/22]

QQmlInfo & QQmlInfo::operator<< ( unsigned short t )

inline

Definition at line 39 of file qqmlinfo.h.

References QDebug::operator<<().

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Friends And Related Symbol Documentation

◆ qmlDebug [1/3]

Q_QML_EXPORT QQmlInfo qmlDebug ( const QObject * me )

friend

◆ qmlDebug [2/3]

Q_QML_EXPORT QQmlInfo qmlDebug	(	const QObject *	me,
		const QList< QQmlError > &	errors )

friend

◆ qmlDebug [3/3]

Q_QML_EXPORT QQmlInfo qmlDebug	(	const QObject *	me,
		const QQmlError &	error )

friend

◆ qmlInfo [1/4]

QQmlInfo qmlInfo ( const QObject * object )

friend

Prints informational messages that include the file and line number for the specified QML object.

\fn QQmlInfo qmlDebug(const QObject *object)
\relates QQmlInfo
\since 5.9

Prints debug messages that include the file and line number for the
specified QML \a object.

! [qqmlinfo-desc] When QML types produce logging messages, it improves traceability if they include the QML file and line number on which the particular instance was instantiated.

To include the file and line number, an object must be passed. If the file and line number is not available for that instance (either it was not instantiated by the QML engine or location information is disabled), "unknown location" will be used instead. ! [qqmlinfo-desc]

For example,

\code
qmlDebug(object) << "Internal state: 42";
\endcode

prints

\badcode
QML MyCustomType (unknown location): Internal state: 42
\endcode

\sa qmlInfo, qmlWarning

qqmlinfo-desc

For example,

qmlInfo(object) << tr("component property is a write-once property");

QQmlInfo::qmlInfo

friend Q_QML_EXPORT QQmlInfo qmlInfo(const QObject *me)

Prints informational messages that include the file and line number for the specified QML object.

tr

#define tr(X)

Definition qtemporaryfile.cpp:21

prints

\badcode QML MyCustomType (unknown location): component property is a write-once property

Note: In versions prior to Qt 5.9, qmlInfo reported messages using a warning QtMsgType. For Qt 5.9 and above, qmlInfo uses an info QtMsgType. To send warnings, use qmlWarning.

See also: qmlDebug, qmlWarning

◆ qmlInfo [2/4]

Q_QML_EXPORT QQmlInfo qmlInfo	(	const QObject *	me,
		const QList< QQmlError > &	errors )

friend

◆ qmlInfo [3/4]

Q_QML_EXPORT QQmlInfo qmlInfo	(	const QObject *	me,
		const QQmlError &	error )

friend

◆ qmlInfo() [4/4]

QQmlInfo qmlInfo ( const QObject * object )

\fn QQmlInfo qmlDebug(const QObject *object)
\relates QQmlInfo
\since 5.9

Prints debug messages that include the file and line number for the
specified QML \a object.

! [qqmlinfo-desc] When QML types produce logging messages, it improves traceability if they include the QML file and line number on which the particular instance was instantiated.

To include the file and line number, an object must be passed. If the file and line number is not available for that instance (either it was not instantiated by the QML engine or location information is disabled), "unknown location" will be used instead. ! [qqmlinfo-desc]

For example,

\code
qmlDebug(object) << "Internal state: 42";
\endcode

prints

\badcode
QML MyCustomType (unknown location): Internal state: 42
\endcode

\sa qmlInfo, qmlWarning

qqmlinfo-desc

For example,

qmlInfo(object) << tr("component property is a write-once property");

prints

\badcode QML MyCustomType (unknown location): component property is a write-once property

Note: In versions prior to Qt 5.9, qmlInfo reported messages using a warning QtMsgType. For Qt 5.9 and above, qmlInfo uses an info QtMsgType. To send warnings, use qmlWarning.

See also: qmlDebug, qmlWarning

◆ qmlWarning [1/4]

QQmlInfo qmlWarning ( const QObject * object )

friend

Since: 5.9

Prints warning messages that include the file and line number for the specified QML object.

qqmlinfo-desc

For example,

qmlInfo(object) << tr("property cannot be set to 0");

prints

\badcode QML MyCustomType (unknown location): property cannot be set to 0

See also: qmlDebug, qmlInfo

◆ qmlWarning [2/4]

Q_QML_EXPORT QQmlInfo qmlWarning	(	const QObject *	me,
		const QList< QQmlError > &	errors )

friend

◆ qmlWarning [3/4]

Q_QML_EXPORT QQmlInfo qmlWarning	(	const QObject *	me,
		const QQmlError &	error )

friend

◆ qmlWarning() [4/4]

QQmlInfo qmlWarning ( const QObject * object )

Since: 5.9

Prints warning messages that include the file and line number for the specified QML object.

qqmlinfo-desc

For example,

qmlInfo(object) << tr("property cannot be set to 0");

prints

\badcode QML MyCustomType (unknown location): property cannot be set to 0

See also: qmlDebug, qmlInfo

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

qtdeclarative/src/qml/qml/qqmlinfo.h (0dc4fd240a2897c5c443a0ef6d84c416843e4938)
qtdeclarative/src/qml/qml/qqmlinfo.cpp (bf4882a1464435065758aa4169b5f27ef5b22f07)

Public Member Functions

Friends

Related Symbols

Detailed Description

Constructor & Destructor Documentation

◆ QQmlInfo()

◆ ~QQmlInfo()

Member Function Documentation

◆ operator<<() [1/22]

◆ operator<<() [2/22]

◆ operator<<() [3/22]

◆ operator<<() [4/22]

◆ operator<<() [5/22]

◆ operator<<() [6/22]

◆ operator<<() [7/22]

◆ operator<<() [8/22]

◆ operator<<() [9/22]

◆ operator<<() [10/22]

◆ operator<<() [11/22]

◆ operator<<() [12/22]

◆ operator<<() [13/22]

◆ operator<<() [14/22]

◆ operator<<() [15/22]

◆ operator<<() [16/22]

◆ operator<<() [17/22]

◆ operator<<() [18/22]

◆ operator<<() [19/22]

◆ operator<<() [20/22]

◆ operator<<() [21/22]

◆ operator<<() [22/22]

Friends And Related Symbol Documentation

◆ qmlDebug [1/3]

◆ qmlDebug [2/3]

◆ qmlDebug [3/3]

◆ qmlInfo [1/4]

◆ qmlInfo [2/4]

◆ qmlInfo [3/4]

◆ qmlInfo() [4/4]

◆ qmlWarning [1/4]

◆ qmlWarning [2/4]

◆ qmlWarning [3/4]

◆ qmlWarning() [4/4]