内容

• 公共类型
• 特性
• 公共函数
• 相关非成员
• 详细描述

QWheelEvent 类

class Qt3DInput ::QWheelEvent

The QWheelEvent class contains parameters that describe a mouse wheel event. 更多...

头：	#include <Qt3DInput/QWheelEvent>
CMake:	find_package(Qt6 COMPONENTS 3dinput REQUIRED) target_link_libraries(mytarget PRIVATE Qt6::3dinput)
qmake:	QT += 3dinput
Since:	Qt 5.5
实例化：	WheelEvent
继承：	QObject

• 所有成员列表，包括继承成员

公共类型

enum	Buttons { LeftButton, RightButton, MiddleButton, BackButton, NoButton }
enum	Modifiers { NoModifier, ShiftModifier, ControlModifier, AltModifier, MetaModifier, KeypadModifier }

特性

accepted : bool angleDelta : const QPoint buttons : const int

modifiers : const Qt3DInput::QWheelEvent::Modifiers x : const int y : const int

公共函数

	QWheelEvent (const ::QWheelEvent & e )
QPoint	angleDelta () const
int	buttons () const
bool	isAccepted () const
Qt3DInput::QWheelEvent::Modifiers	modifiers () const
void	setAccepted (bool accepted )
QEvent::Type	type () const
int	x () const
int	y () const

相关非成员

QWheelEventPtr

详细描述

Mouse wheel events occur when the mouse is rotated.

另请参阅 QKeyEvent , QMouseEvent ，和 QMouseHandler .

成员类型文档编制

enum QWheelEvent:: Buttons

常量	值
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

常量	值
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

特性文档编制

accepted : bool

Specifies if the mouse wheel event has been accepted

访问函数：

bool	isAccepted () const
void	setAccepted (bool accepted )

[read-only] angleDelta : const QPoint

Specifies The change wheel angle of the mouse wheel event

访问函数：

QPoint

angleDelta () const

[read-only] buttons : const int

Specifies the button if present in the mouse wheel event

访问函数：

int	buttons () const

[read-only] modifiers : const Qt3DInput::QWheelEvent::Modifiers

Specifies if any modifiers were applied to the mouse wheel event

访问函数：

Qt3DInput::QWheelEvent::Modifiers

modifiers () const

[read-only] x : const int

Specifies The X coordinate of the mouse wheel event

访问函数：

int	x () const

[read-only] y : const int

Specifies The Y coordinate of the mouse wheel event

访问函数：

int	y () const

成员函数文档编制

QWheelEvent:: QWheelEvent (const ::QWheelEvent & e )

Constructs a new QWheelEvent instance from the QWheelEvent e .

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).

注意： getter 函数对于特性 angleDelta。

int QWheelEvent:: buttons () const

Returns a bitfield to be used to check for mouse buttons that may be accompanying the wheel event.

注意： Getter function for property buttons.

bool QWheelEvent:: isAccepted () const

Returns whether the event was accepted.

注意： getter 函数对于特性 accepted .

Qt3DInput::QWheelEvent::Modifiers QWheelEvent:: modifiers () const

Returns the keyboard modifiers that may be accompanying the wheel event.

注意： Getter function for property modifiers.

void QWheelEvent:: setAccepted ( bool accepted )

Sets the event as accepted if accepted 为 true。

注意： When an event is accepted, it will prevent further propagation to other listeners.

注意： setter 函数对于特性 accepted .

另请参阅 isAccepted ().

QEvent::Type QWheelEvent:: type () const

返回 QEvent::Type of the event.

int QWheelEvent:: x () const

Returns the x position of the mouse event.

注意： Getter function for property x.

int QWheelEvent:: y () const

Returns the x position of the mouse event.

注意： Getter function for property y.

相关非成员

QWheelEventPtr

共享指针为 QWheelEvent .