QWheelEvent Class
(Qt3DInput::QWheelEvent)The QWheelEvent class contains parameters that describe a mouse wheel event. 更多...
| 头文件: | #include <Qt3DInput/QWheelEvent> |
| qmake: | QT += 3dinput |
| 开始支持版本: | Qt 5.5 |
| Instantiated By: | WheelEvent |
| 基类: | QObject |
公有类型
| enum | Buttons { LeftButton, RightButton, MiddleButton, BackButton, NoButton } |
| enum | Modifiers { NoModifier, ShiftModifier, ControlModifier, AltModifier, MetaModifier, KeypadModifier } |
属性
|
- 1 个属性继承自 QObject
公有函数
| QWheelEvent(const QWheelEvent &e) | |
| ~QWheelEvent() | |
| QPoint | angleDelta() const |
| int | buttons() const |
| bool | isAccepted() const |
| Modifiers | modifiers() const |
| void | setAccepted(bool accepted) |
| QEvent::Type | type() const |
| int | x() const |
| int | y() const |
- 32 个公有函数继承自 QObject
相关非成员
| typedef | QWheelEventPtr |
其他继承的成员
- 1 个公有槽函数继承自 QObject
- 2 个信号继承自 QObject
- 1 个公有变量继承自 QObject
- 10 个静态公有成员继承自 QObject
- 9 个受保护的函数继承自 QObject
- 2 个受保护的变量继承自 QObject
详细描述
The QWheelEvent class contains parameters that describe a mouse wheel event.
Mouse wheel events occur when the mouse is rotated.
参见 QKeyEvent, QMouseEvent, and QMouseHandler.
成员类型
enum QWheelEvent::Buttons
| Constant | Value |
|---|---|
Qt3DInput::QWheelEvent::LeftButton | Qt::LeftButton |
Qt3DInput::QWheelEvent::RightButton | Qt::RightButton |
Qt3DInput::QWheelEvent::MiddleButton | Qt::MiddleButton |
Qt3DInput::QWheelEvent::BackButton | Qt::BackButton |
Qt3DInput::QWheelEvent::NoButton | Qt::NoButton |
enum QWheelEvent::Modifiers
| Constant | Value |
|---|---|
Qt3DInput::QWheelEvent::NoModifier | Qt::NoModifier |
Qt3DInput::QWheelEvent::ShiftModifier | Qt::ShiftModifier |
Qt3DInput::QWheelEvent::ControlModifier | Qt::ControlModifier |
Qt3DInput::QWheelEvent::AltModifier | Qt::AltModifier |
Qt3DInput::QWheelEvent::MetaModifier | Qt::MetaModifier |
Qt3DInput::QWheelEvent::KeypadModifier | Qt::KeypadModifier |
属性
accepted : bool
Specifies if the mouse wheel event has been accepted
访问函数:
| bool | isAccepted() const |
| void | setAccepted(bool accepted) |
angleDelta : const QPoint
Specifies The change wheel angle of the mouse wheel event
访问函数:
| QPoint | angleDelta() const |
buttons : const int
Specifies the button if present in the mouse wheel event
访问函数:
| int | buttons() const |
modifiers : const Qt3DInput::QWheelEvent::Modifiers
Specifies if any modifiers were applied to the mouse wheel event
访问函数:
| Modifiers | modifiers() const |
x : const int
Specifies The X coordinate of the mouse wheel event
访问函数:
| int | x() const |
y : const int
Specifies The Y coordinate of the mouse wheel event
访问函数:
| int | y() const |
成员函数
QWheelEvent::QWheelEvent(const QWheelEvent &e)
Constructs a new QWheelEvent instance from the QWheelEvent e.
QWheelEvent::~QWheelEvent()
Destroys the instance of QWheelEvent.
QPoint QWheelEvent::angleDelta() const
Returns the distance that the wheel is rotated, in eighths of a degree. A positive value indicates that the wheel was rotated forward (away from the user), a negative value indicates the wheel was rotated backward (toward the user).
Note: Getter function for property angleDelta.
int QWheelEvent::buttons() const
Returns a bitfield to be used to check for mouse buttons that may be accompanying the wheel event.
Note: Getter function for property buttons.
bool QWheelEvent::isAccepted() const
Returns whether the event was accepted.
Note: Getter function for property accepted.
Modifiers QWheelEvent::modifiers() const
Returns the keyboard modifiers that may be accompanying the wheel event.
Note: Getter function for property modifiers.
void QWheelEvent::setAccepted(bool accepted)
Sets the event as accepted if accepted is true.
Note: When an event is accepted, it will prevent further propagation to other listeners.
Note: Setter function for property accepted.
参见 isAccepted().
QEvent::Type QWheelEvent::type() const
Returns the QEvent::Type of the event.
int QWheelEvent::x() const
Returns the x position of the mouse event.
Note: Getter function for property x.
int QWheelEvent::y() const
Returns the x position of the mouse event.
Note: Getter function for property y.