Obsolete Members for QVariant
The following members of class QVariant are obsolete. They are provided to keep old source code working. We strongly advise against using them in new code.
Public Types
(obsolete) enum | Type { Invalid, BitArray, Bitmap, Bool, ..., UserType } |
Public Functions
(obsolete) bool | operator<(const QVariant &v) const |
(obsolete) bool | operator<=(const QVariant &v) const |
(obsolete) bool | operator>(const QVariant &v) const |
(obsolete) bool | operator>=(const QVariant &v) const |
Related Non-Members
(obsolete) bool | qVariantCanConvert(const QVariant &value) |
Member Type Documentation
enum QVariant::Type
This enum type defines the types of variable that a QVariant can contain.
| Constant | Value | Description |
|---|---|---|
QVariant::Invalid | QMetaType::UnknownType | no type |
QVariant::BitArray | QMetaType::QBitArray | a QBitArray |
QVariant::Bitmap | QMetaType::QBitmap | a QBitmap |
QVariant::Bool | QMetaType::Bool | a bool |
QVariant::Brush | QMetaType::QBrush | a QBrush |
QVariant::ByteArray | QMetaType::QByteArray | a QByteArray |
QVariant::Char | QMetaType::QChar | a QChar |
QVariant::Color | QMetaType::QColor | a QColor |
QVariant::Cursor | QMetaType::QCursor | a QCursor |
QVariant::Date | QMetaType::QDate | a QDate |
QVariant::DateTime | QMetaType::QDateTime | a QDateTime |
QVariant::Double | QMetaType::Double | a double |
QVariant::EasingCurve | QMetaType::QEasingCurve | a QEasingCurve |
QVariant::Uuid | QMetaType::QUuid | a QUuid |
QVariant::ModelIndex | QMetaType::QModelIndex | a QModelIndex |
QVariant::PersistentModelIndex | QMetaType::QPersistentModelIndex | a QPersistentModelIndex (since 5.5) |
QVariant::Font | QMetaType::QFont | a QFont |
QVariant::Hash | QMetaType::QVariantHash | a QVariantHash |
QVariant::Icon | QMetaType::QIcon | a QIcon |
QVariant::Image | QMetaType::QImage | a QImage |
QVariant::Int | QMetaType::Int | an int |
QVariant::KeySequence | QMetaType::QKeySequence | a QKeySequence |
QVariant::Line | QMetaType::QLine | a QLine |
QVariant::LineF | QMetaType::QLineF | a QLineF |
QVariant::List | QMetaType::QVariantList | a QVariantList |
QVariant::Locale | QMetaType::QLocale | a QLocale |
QVariant::LongLong | QMetaType::LongLong | a qlonglong |
QVariant::Map | QMetaType::QVariantMap | a QVariantMap |
QVariant::Matrix | QMetaType::QMatrix | a QMatrix |
QVariant::Transform | QMetaType::QTransform | a QTransform |
QVariant::Matrix4x4 | QMetaType::QMatrix4x4 | a QMatrix4x4 |
QVariant::Palette | QMetaType::QPalette | a QPalette |
QVariant::Pen | QMetaType::QPen | a QPen |
QVariant::Pixmap | QMetaType::QPixmap | a QPixmap |
QVariant::Point | QMetaType::QPoint | a QPoint |
QVariant::PointF | QMetaType::QPointF | a QPointF |
QVariant::Polygon | QMetaType::QPolygon | a QPolygon |
QVariant::PolygonF | QMetaType::QPolygonF | a QPolygonF |
QVariant::Quaternion | QMetaType::QQuaternion | a QQuaternion |
QVariant::Rect | QMetaType::QRect | a QRect |
QVariant::RectF | QMetaType::QRectF | a QRectF |
QVariant::RegExp | QMetaType::QRegExp | a QRegExp |
QVariant::RegularExpression | QMetaType::QRegularExpression | a QRegularExpression |
QVariant::Region | QMetaType::QRegion | a QRegion |
QVariant::Size | QMetaType::QSize | a QSize |
QVariant::SizeF | QMetaType::QSizeF | a QSizeF |
QVariant::SizePolicy | QMetaType::QSizePolicy | a QSizePolicy |
QVariant::String | QMetaType::QString | a QString |
QVariant::StringList | QMetaType::QStringList | a QStringList |
QVariant::TextFormat | QMetaType::QTextFormat | a QTextFormat |
QVariant::TextLength | QMetaType::QTextLength | a QTextLength |
QVariant::Time | QMetaType::QTime | a QTime |
QVariant::UInt | QMetaType::UInt | a uint |
QVariant::ULongLong | QMetaType::ULongLong | a qulonglong |
QVariant::Url | QMetaType::QUrl | a QUrl |
QVariant::Vector2D | QMetaType::QVector2D | a QVector2D |
QVariant::Vector3D | QMetaType::QVector3D | a QVector3D |
QVariant::Vector4D | QMetaType::QVector4D | a QVector4D |
QVariant::UserType | QMetaType::User | Base value for user-defined types. |
Member Function Documentation
bool QVariant::operator<(const QVariant &v) const
Compares this QVariant with v and returns true if this is less than v.
Note: Comparability might not be availabe for the type stored in this QVariant or in v.
Warning: To make this function work with a custom type registered with qRegisterMetaType(), its comparison operator must be registered using QMetaType::registerComparators().
This operator is deprecated as it cannot establish a total order required for most use of this operator, which is the reason you cannot use QVariant as the key of a QMap.
bool QVariant::operator<=(const QVariant &v) const
Compares this QVariant with v and returns true if this is less or equal than v.
Note: Comparability might not be available for the type stored in this QVariant or in v.
Warning: To make this function work with a custom type registered with qRegisterMetaType(), its comparison operator must be registered using QMetaType::registerComparators().
This operator is deprecated as it cannot establish a total order.
bool QVariant::operator>(const QVariant &v) const
Compares this QVariant with v and returns true if this is larger than v.
Note: Comparability might not be available for the type stored in this QVariant or in v.
Warning: To make this function work with a custom type registered with qRegisterMetaType(), its comparison operator must be registered using QMetaType::registerComparators().
This operator is deprecated as it cannot establish a total order.
bool QVariant::operator>=(const QVariant &v) const
Compares this QVariant with v and returns true if this is larger or equal than v.
Note: Comparability might not be available for the type stored in this QVariant or in v.
Warning: To make this function work with a custom type registered with qRegisterMetaType(), its comparison operator must be registered using QMetaType::registerComparators().
This operator is deprecated as it cannot establish a total order.
Related Non-Members
bool qVariantCanConvert(const QVariant &value)
Returns true if the given value can be converted to the template type specified; otherwise returns false.
This function is equivalent to QVariant::canConvert(value).
Note: This function was provided as a workaround for MSVC 6 which did not support member template functions. It is advised to use the other form in new code.
See also QVariant::canConvert().