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Doc: Fix QVariant documentation

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Update documentation to not reference API that is obsolete in Qt 6.
Also fix documentation for changed behavior (isNull()), and
fix snippets.

Change-Id: I526efeff63d907bbadd5e8a539ccf237cb992125
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
(cherry picked from commit 704f0354998937363162fdb9ed6984a7339bc370)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Kai Köhne 2021-05-28 17:43:37 +02:00 committed by Qt Cherry-pick Bot
parent 40b0bb1e8b
commit 07c87a56f2
2 changed files with 56 additions and 61 deletions
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14
src/corelib/doc/snippets/code/src_corelib_kernel_qvariant.cpp
View File

@ -53,7 +53,6 @@ QDataStream out(...);
QVariant v(123); // The variant now contains an int QVariant v(123); // The variant now contains an int
int x = v.toInt(); // x = 123 int x = v.toInt(); // x = 123
out << v; // Writes a type tag and an int to out out << v; // Writes a type tag and an int to out
v = QVariant("hello"); // The variant now contains a QByteArray
v = QVariant(tr("hello")); // The variant now contains a QString v = QVariant(tr("hello")); // The variant now contains a QString
int y = v.toInt(); // y = 0 since v cannot be converted to an int int y = v.toInt(); // y = 0 since v cannot be converted to an int
QString s = v.toString(); // s = tr("hello") (see QObject::tr()) QString s = v.toString(); // s = tr("hello") (see QObject::tr())
@ -64,16 +63,13 @@ in >> v; // Reads an Int variant
int z = v.toInt(); // z = 123 int z = v.toInt(); // z = 123
qDebug("Type is %s", // prints "Type is int" qDebug("Type is %s", // prints "Type is int"
v.typeName()); v.typeName());
v = v.toInt() + 100; // The variant now hold the value 223 v = v.toInt() + 100; // The variant now holds the value 223
v = QVariant(QStringList()); v = QVariant(QStringList()); // The variant now holds a QStringList
//! [0] //! [0]
//! [1] //! [1]
QVariant x, y(QString()), z(QString("")); QVariant x; // x.isNull() == true
x.convert(QMetaType::Int); QVariant y = QVariant::fromValue(nullptr); // y.isNull() == true
// x.isNull() == true
// y.isNull() == true, z.isNull() == false
//! [1] //! [1]
@ -95,7 +91,7 @@ QVariant v;
v.setValue(5); v.setValue(5);
int i = v.toInt(); // i is now 5 int i = v.toInt(); // i is now 5
QString s = v.toString() // s is now "5" QString s = v.toString(); // s is now "5"
MyCustomStruct c; MyCustomStruct c;
v.setValue(c); v.setValue(c);

103
src/corelib/kernel/qvariant.cpp
View File

@ -308,11 +308,11 @@ static void customClear(QVariant::Private *d)
classes cannot be used in unions. Without QVariant, this would be classes cannot be used in unions. Without QVariant, this would be
a problem for QObject::property() and for database work, etc. a problem for QObject::property() and for database work, etc.
A QVariant object holds a single value of a single type() at a A QVariant object holds a single value of a single typeId() at a
time. (Some type()s are multi-valued, for example a string list.) time. (Some types are multi-valued, for example a string list.)
You can find out what type, T, the variant holds, convert it to a You can find out what type, T, the variant holds, convert it to a
different type using convert(), get its value using one of the different type using convert(), get its value using one of the
toT() functions (e.g., toSize()) and check whether the type can toT() functions (e.g., toSize()), and check whether the type can
be converted to a particular type using canConvert(). be converted to a particular type using canConvert().
The methods named toT() (e.g., toInt(), toString()) are const. If The methods named toT() (e.g., toInt(), toString()) are const. If
@ -333,15 +333,14 @@ static void customClear(QVariant::Private *d)
and versatile, but may prove less memory and speed efficient than and versatile, but may prove less memory and speed efficient than
storing specific types in standard data structures. storing specific types in standard data structures.
QVariant also supports the notion of null values, where you can QVariant also supports the notion of null values. A variant is null
have a defined type with no value set. However, note that QVariant if the variant contains no initialized value, or contains a null pointer.
types can only be cast when they have had a value set.
\snippet code/src_corelib_kernel_qvariant.cpp 1 \snippet code/src_corelib_kernel_qvariant.cpp 1
QVariant can be extended to support other types than those QVariant can be extended to support other types than those
mentioned in the \l Type enum. See \l{Creating Custom Qt Types}{Creating Custom Qt Types} mentioned in the \l QMetaType::Type enum.
for details. See \l{Creating Custom Qt Types}{Creating Custom Qt Types} for details.
\section1 A Note on GUI Types \section1 A Note on GUI Types
@ -367,9 +366,9 @@ static void customClear(QVariant::Private *d)
QVariant to convert between types given suitable data; it is still QVariant to convert between types given suitable data; it is still
possible to supply data which cannot actually be converted. possible to supply data which cannot actually be converted.
For example, canConvert(Int) would return true when called on a variant For example, \c{canConvert(QMetaType::fromType<int>())} would return true
containing a string because, in principle, QVariant is able to convert when called on a variant containing a string because, in principle,
strings of numbers to integers. QVariant is able to convert strings of numbers to integers.
However, if the string contains non-numeric characters, it cannot be However, if the string contains non-numeric characters, it cannot be
converted to an integer, and any attempt to convert it will fail. converted to an integer, and any attempt to convert it will fail.
Hence, it is important to have both functions return true for a Hence, it is important to have both functions return true for a
@ -993,7 +992,7 @@ QVariant::QVariant(const QPersistentModelIndex &modelIndex)
Returns the storage type of the value stored in the variant. This is Returns the storage type of the value stored in the variant. This is
the same as metaType().id(). the same as metaType().id().
\sa type(), metaType() \sa metaType()
*/ */
/*! /*!
@ -1388,7 +1387,7 @@ QDataStream &operator<<(QDataStream &s, const QVariant &p)
\l QMetaType::QVariantList of a type that can be converted to QString; \l QMetaType::QVariantList of a type that can be converted to QString;
otherwise returns an empty list. otherwise returns an empty list.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QStringList QVariant::toStringList() const QStringList QVariant::toStringList() const
{ {
@ -1408,7 +1407,7 @@ QStringList QVariant::toStringList() const
Calling QVariant::toString() on an unsupported variant returns an empty Calling QVariant::toString() on an unsupported variant returns an empty
string. string.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QString QVariant::toString() const QString QVariant::toString() const
{ {
@ -1419,7 +1418,7 @@ QString QVariant::toString() const
Returns the variant as a QMap<QString, QVariant> if the variant Returns the variant as a QMap<QString, QVariant> if the variant
has type() \l QMetaType::QVariantMap; otherwise returns an empty map. has type() \l QMetaType::QVariantMap; otherwise returns an empty map.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QVariantMap QVariant::toMap() const QVariantMap QVariant::toMap() const
{ {
@ -1430,7 +1429,7 @@ QVariantMap QVariant::toMap() const
Returns the variant as a QHash<QString, QVariant> if the variant Returns the variant as a QHash<QString, QVariant> if the variant
has type() \l QMetaType::QVariantHash; otherwise returns an empty map. has type() \l QMetaType::QVariantHash; otherwise returns an empty map.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QVariantHash QVariant::toHash() const QVariantHash QVariant::toHash() const
{ {
@ -1447,7 +1446,7 @@ QVariantHash QVariant::toHash() const
If the type() is \l QMetaType::QString, an invalid date will be returned if If the type() is \l QMetaType::QString, an invalid date will be returned if
the string cannot be parsed as a Qt::ISODate format date. the string cannot be parsed as a Qt::ISODate format date.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QDate QVariant::toDate() const QDate QVariant::toDate() const
{ {
@ -1464,7 +1463,7 @@ QDate QVariant::toDate() const
If the type() is \l QMetaType::QString, an invalid time will be returned if If the type() is \l QMetaType::QString, an invalid time will be returned if
the string cannot be parsed as a Qt::ISODate format time. the string cannot be parsed as a Qt::ISODate format time.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QTime QVariant::toTime() const QTime QVariant::toTime() const
{ {
@ -1481,7 +1480,7 @@ QTime QVariant::toTime() const
If the type() is \l QMetaType::QString, an invalid date/time will be If the type() is \l QMetaType::QString, an invalid date/time will be
returned if the string cannot be parsed as a Qt::ISODate format date/time. returned if the string cannot be parsed as a Qt::ISODate format date/time.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QDateTime QVariant::toDateTime() const QDateTime QVariant::toDateTime() const
{ {
@ -1495,7 +1494,7 @@ QDateTime QVariant::toDateTime() const
Returns the variant as a QEasingCurve if the variant has userType() Returns the variant as a QEasingCurve if the variant has userType()
\l QMetaType::QEasingCurve; otherwise returns a default easing curve. \l QMetaType::QEasingCurve; otherwise returns a default easing curve.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
#if QT_CONFIG(easingcurve) #if QT_CONFIG(easingcurve)
QEasingCurve QVariant::toEasingCurve() const QEasingCurve QVariant::toEasingCurve() const
@ -1511,7 +1510,7 @@ QEasingCurve QVariant::toEasingCurve() const
\l QMetaType::QByteArray or \l QMetaType::QString (converted using \l QMetaType::QByteArray or \l QMetaType::QString (converted using
QString::fromUtf8()); otherwise returns an empty byte array. QString::fromUtf8()); otherwise returns an empty byte array.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QByteArray QVariant::toByteArray() const QByteArray QVariant::toByteArray() const
{ {
@ -1526,7 +1525,7 @@ QByteArray QVariant::toByteArray() const
\l QMetaType::QPoint or \l QMetaType::QPointF; otherwise returns a null \l QMetaType::QPoint or \l QMetaType::QPointF; otherwise returns a null
QPoint. QPoint.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QPoint QVariant::toPoint() const QPoint QVariant::toPoint() const
{ {
@ -1539,7 +1538,7 @@ QPoint QVariant::toPoint() const
Returns the variant as a QRect if the variant has userType() Returns the variant as a QRect if the variant has userType()
\l QMetaType::QRect; otherwise returns an invalid QRect. \l QMetaType::QRect; otherwise returns an invalid QRect.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QRect QVariant::toRect() const QRect QVariant::toRect() const
{ {
@ -1552,7 +1551,7 @@ QRect QVariant::toRect() const
Returns the variant as a QSize if the variant has userType() Returns the variant as a QSize if the variant has userType()
\l QMetaType::QSize; otherwise returns an invalid QSize. \l QMetaType::QSize; otherwise returns an invalid QSize.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QSize QVariant::toSize() const QSize QVariant::toSize() const
{ {
@ -1565,7 +1564,7 @@ QSize QVariant::toSize() const
Returns the variant as a QSizeF if the variant has userType() \l Returns the variant as a QSizeF if the variant has userType() \l
QMetaType::QSizeF; otherwise returns an invalid QSizeF. QMetaType::QSizeF; otherwise returns an invalid QSizeF.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QSizeF QVariant::toSizeF() const QSizeF QVariant::toSizeF() const
{ {
@ -1579,7 +1578,7 @@ QSizeF QVariant::toSizeF() const
\l QMetaType::QRect or \l QMetaType::QRectF; otherwise returns an invalid \l QMetaType::QRect or \l QMetaType::QRectF; otherwise returns an invalid
QRectF. QRectF.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QRectF QVariant::toRectF() const QRectF QVariant::toRectF() const
{ {
@ -1592,7 +1591,7 @@ QRectF QVariant::toRectF() const
Returns the variant as a QLineF if the variant has userType() Returns the variant as a QLineF if the variant has userType()
\l QMetaType::QLineF; otherwise returns an invalid QLineF. \l QMetaType::QLineF; otherwise returns an invalid QLineF.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QLineF QVariant::toLineF() const QLineF QVariant::toLineF() const
{ {
@ -1605,7 +1604,7 @@ QLineF QVariant::toLineF() const
Returns the variant as a QLine if the variant has userType() Returns the variant as a QLine if the variant has userType()
\l QMetaType::QLine; otherwise returns an invalid QLine. \l QMetaType::QLine; otherwise returns an invalid QLine.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QLine QVariant::toLine() const QLine QVariant::toLine() const
{ {
@ -1619,7 +1618,7 @@ QLine QVariant::toLine() const
QMetaType::QPoint or \l QMetaType::QPointF; otherwise returns a null QMetaType::QPoint or \l QMetaType::QPointF; otherwise returns a null
QPointF. QPointF.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QPointF QVariant::toPointF() const QPointF QVariant::toPointF() const
{ {
@ -1635,7 +1634,7 @@ QPointF QVariant::toPointF() const
Returns the variant as a QUrl if the variant has userType() Returns the variant as a QUrl if the variant has userType()
\l QMetaType::QUrl; otherwise returns an invalid QUrl. \l QMetaType::QUrl; otherwise returns an invalid QUrl.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QUrl QVariant::toUrl() const QUrl QVariant::toUrl() const
{ {
@ -1649,7 +1648,7 @@ QUrl QVariant::toUrl() const
Returns the variant as a QLocale if the variant has userType() Returns the variant as a QLocale if the variant has userType()
\l QMetaType::QLocale; otherwise returns an invalid QLocale. \l QMetaType::QLocale; otherwise returns an invalid QLocale.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QLocale QVariant::toLocale() const QLocale QVariant::toLocale() const
{ {
@ -1664,7 +1663,7 @@ QLocale QVariant::toLocale() const
Returns the variant as a QRegularExpression if the variant has userType() \l Returns the variant as a QRegularExpression if the variant has userType() \l
QRegularExpression; otherwise returns an empty QRegularExpression. QRegularExpression; otherwise returns an empty QRegularExpression.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QRegularExpression QVariant::toRegularExpression() const QRegularExpression QVariant::toRegularExpression() const
{ {
@ -1679,7 +1678,7 @@ QRegularExpression QVariant::toRegularExpression() const
Returns the variant as a QModelIndex if the variant has userType() \l Returns the variant as a QModelIndex if the variant has userType() \l
QModelIndex; otherwise returns a default constructed QModelIndex. QModelIndex; otherwise returns a default constructed QModelIndex.
\sa canConvert(int targetTypeId), convert(), toPersistentModelIndex() \sa canConvert(), convert(), toPersistentModelIndex()
*/ */
QModelIndex QVariant::toModelIndex() const QModelIndex QVariant::toModelIndex() const
{ {
@ -1692,7 +1691,7 @@ QModelIndex QVariant::toModelIndex() const
Returns the variant as a QPersistentModelIndex if the variant has userType() \l Returns the variant as a QPersistentModelIndex if the variant has userType() \l
QPersistentModelIndex; otherwise returns a default constructed QPersistentModelIndex. QPersistentModelIndex; otherwise returns a default constructed QPersistentModelIndex.
\sa canConvert(int targetTypeId), convert(), toModelIndex() \sa canConvert(), convert(), toModelIndex()
*/ */
QPersistentModelIndex QVariant::toPersistentModelIndex() const QPersistentModelIndex QVariant::toPersistentModelIndex() const
{ {
@ -1707,7 +1706,7 @@ QPersistentModelIndex QVariant::toPersistentModelIndex() const
\l QMetaType::QUuid, \l QMetaType::QByteArray or \l QMetaType::QString; \l QMetaType::QUuid, \l QMetaType::QByteArray or \l QMetaType::QString;
otherwise returns a default-constructed QUuid. otherwise returns a default-constructed QUuid.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QUuid QVariant::toUuid() const QUuid QVariant::toUuid() const
{ {
@ -1721,7 +1720,7 @@ QUuid QVariant::toUuid() const
Returns the variant as a QJsonValue if the variant has userType() \l Returns the variant as a QJsonValue if the variant has userType() \l
QJsonValue; otherwise returns a default constructed QJsonValue. QJsonValue; otherwise returns a default constructed QJsonValue.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QJsonValue QVariant::toJsonValue() const QJsonValue QVariant::toJsonValue() const
{ {
@ -1734,7 +1733,7 @@ QJsonValue QVariant::toJsonValue() const
Returns the variant as a QJsonObject if the variant has userType() \l Returns the variant as a QJsonObject if the variant has userType() \l
QJsonObject; otherwise returns a default constructed QJsonObject. QJsonObject; otherwise returns a default constructed QJsonObject.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QJsonObject QVariant::toJsonObject() const QJsonObject QVariant::toJsonObject() const
{ {
@ -1747,7 +1746,7 @@ QJsonObject QVariant::toJsonObject() const
Returns the variant as a QJsonArray if the variant has userType() \l Returns the variant as a QJsonArray if the variant has userType() \l
QJsonArray; otherwise returns a default constructed QJsonArray. QJsonArray; otherwise returns a default constructed QJsonArray.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QJsonArray QVariant::toJsonArray() const QJsonArray QVariant::toJsonArray() const
{ {
@ -1760,7 +1759,7 @@ QJsonArray QVariant::toJsonArray() const
Returns the variant as a QJsonDocument if the variant has userType() \l Returns the variant as a QJsonDocument if the variant has userType() \l
QJsonDocument; otherwise returns a default constructed QJsonDocument. QJsonDocument; otherwise returns a default constructed QJsonDocument.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QJsonDocument QVariant::toJsonDocument() const QJsonDocument QVariant::toJsonDocument() const
{ {
@ -1775,7 +1774,7 @@ QJsonDocument QVariant::toJsonDocument() const
\l QMetaType::QChar, \l QMetaType::Int, or \l QMetaType::UInt; otherwise \l QMetaType::QChar, \l QMetaType::Int, or \l QMetaType::UInt; otherwise
returns an invalid QChar. returns an invalid QChar.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QChar QVariant::toChar() const QChar QVariant::toChar() const
{ {
@ -1786,7 +1785,7 @@ QChar QVariant::toChar() const
Returns the variant as a QBitArray if the variant has userType() Returns the variant as a QBitArray if the variant has userType()
\l QMetaType::QBitArray; otherwise returns an empty bit array. \l QMetaType::QBitArray; otherwise returns an empty bit array.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QBitArray QVariant::toBitArray() const QBitArray QVariant::toBitArray() const
{ {
@ -1825,7 +1824,7 @@ inline T qNumVariantToHelper(const QVariant::Private &d, bool *ok, const T& val)
will not be reflected in \a ok. A simple workaround is to use will not be reflected in \a ok. A simple workaround is to use
QString::toInt(). QString::toInt().
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
int QVariant::toInt(bool *ok) const int QVariant::toInt(bool *ok) const
{ {
@ -1847,7 +1846,7 @@ int QVariant::toInt(bool *ok) const
overflow will not be reflected in \a ok. A simple workaround is to use overflow will not be reflected in \a ok. A simple workaround is to use
QString::toUInt(). QString::toUInt().
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
uint QVariant::toUInt(bool *ok) const uint QVariant::toUInt(bool *ok) const
{ {
@ -1864,7 +1863,7 @@ uint QVariant::toUInt(bool *ok) const
If \a ok is non-null: \c{*}\c{ok} is set to true if the value could be If \a ok is non-null: \c{*}\c{ok} is set to true if the value could be
converted to an int; otherwise \c{*}\c{ok} is set to false. converted to an int; otherwise \c{*}\c{ok} is set to false.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
qlonglong QVariant::toLongLong(bool *ok) const qlonglong QVariant::toLongLong(bool *ok) const
{ {
@ -1881,7 +1880,7 @@ qlonglong QVariant::toLongLong(bool *ok) const
If \a ok is non-null: \c{*}\a{ok} is set to true if the value could be If \a ok is non-null: \c{*}\a{ok} is set to true if the value could be
converted to an int; otherwise \c{*}\a{ok} is set to false. converted to an int; otherwise \c{*}\a{ok} is set to false.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
qulonglong QVariant::toULongLong(bool *ok) const qulonglong QVariant::toULongLong(bool *ok) const
{ {
@ -1898,7 +1897,7 @@ qulonglong QVariant::toULongLong(bool *ok) const
\l QMetaType::QByteArray and its lower-case content is not one of the \l QMetaType::QByteArray and its lower-case content is not one of the
following: empty, "0" or "false"; otherwise returns \c false. following: empty, "0" or "false"; otherwise returns \c false.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
bool QVariant::toBool() const bool QVariant::toBool() const
{ {
@ -1921,7 +1920,7 @@ bool QVariant::toBool() const
If \a ok is non-null: \c{*}\a{ok} is set to true if the value could be If \a ok is non-null: \c{*}\a{ok} is set to true if the value could be
converted to a double; otherwise \c{*}\a{ok} is set to false. converted to a double; otherwise \c{*}\a{ok} is set to false.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
double QVariant::toDouble(bool *ok) const double QVariant::toDouble(bool *ok) const
{ {
@ -1940,7 +1939,7 @@ double QVariant::toDouble(bool *ok) const
If \a ok is non-null: \c{*}\a{ok} is set to true if the value could be If \a ok is non-null: \c{*}\a{ok} is set to true if the value could be
converted to a double; otherwise \c{*}\a{ok} is set to false. converted to a double; otherwise \c{*}\a{ok} is set to false.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
float QVariant::toFloat(bool *ok) const float QVariant::toFloat(bool *ok) const
{ {
@ -1959,7 +1958,7 @@ float QVariant::toFloat(bool *ok) const
If \a ok is non-null: \c{*}\a{ok} is set to true if the value could be If \a ok is non-null: \c{*}\a{ok} is set to true if the value could be
converted to a double; otherwise \c{*}\a{ok} is set to false. converted to a double; otherwise \c{*}\a{ok} is set to false.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
qreal QVariant::toReal(bool *ok) const qreal QVariant::toReal(bool *ok) const
{ {
@ -1971,7 +1970,7 @@ qreal QVariant::toReal(bool *ok) const
\l QMetaType::QVariantList or \l QMetaType::QStringList; otherwise returns \l QMetaType::QVariantList or \l QMetaType::QStringList; otherwise returns
an empty list. an empty list.
\sa canConvert(int targetTypeId), convert() \sa canConvert(), convert()
*/ */
QVariantList QVariant::toList() const QVariantList QVariant::toList() const
{ {
@ -2040,7 +2039,7 @@ QVariantList QVariant::toList() const
\since 6.0 \since 6.0
\sa canConvert(int targetTypeId), clear() \sa canConvert(), clear()
*/ */
bool QVariant::convert(QMetaType targetType) bool QVariant::convert(QMetaType targetType)
@ -2473,7 +2472,7 @@ void *QVariant::data()
return true if the variant contained an object of a builtin type with an isNull() return true if the variant contained an object of a builtin type with an isNull()
method that returned true for that object. method that returned true for that object.
\sa convert(int) \sa convert()
*/ */
bool QVariant::isNull() const bool QVariant::isNull() const
{ {