Handle differences between Qt5 and Qt6 更多...

函数
template<typename EventType >
QPoint	eventPos (EventType *event)
	Get the event position (QPoint)

template<typename EventType >
int	eventPosX (EventType *event)
	Get the x coordinate of the event

template<typename EventType >
int	eventPosY (EventType *event)
	Get the y coordinate of the event

int	horizontalAdvance (const QFontMetrics &fm, const QString &str)
	Calculate the horizontal advance of a string (integer version)

qreal	horizontalAdvanceF (const QFontMetricsF &fm, const QString &str)
	Calculate the horizontal advance of a string (floating-point version)

int	wheelEventDelta (QWheelEvent *e)
	Get vertical wheel delta value compatible with Qt5 and Qt6

QTimeZone	utcTimeZone ()
	Get the UTC time zone

QTimeZone	systemTimeZone ()
	Get the system time zone

QTimeZone	offsetTimeZone (int seconds)
	Create a time zone from an offset in seconds ahead of UTC

详细描述

Handle differences between Qt5 and Qt6

函数说明

◆ eventPos()

template<typename EventType >

QPoint qwt::compat::eventPos ( EventType * event )

inline

Get the event position (QPoint)

模板参数

EventType Event type (must support pos() or position() method)

参数

event Event pointer

返回: Event position as QPoint

◆ eventPosX()

template<typename EventType >

int qwt::compat::eventPosX ( EventType * event )

inline

Get the x coordinate of the event

模板参数

EventType Event type

参数

event Event pointer

返回: x coordinate (integer)

◆ eventPosY()

template<typename EventType >

int qwt::compat::eventPosY ( EventType * event )

inline

Get the y coordinate of the event

模板参数

EventType Event type

参数

event Event pointer

返回: y coordinate (integer)

◆ horizontalAdvance()

int qwt::compat::horizontalAdvance	(	const QFontMetrics &	fm,
		const QString &	str
	)

inline

Calculate the horizontal advance of a string (integer version)

参数

fm	QFontMetrics object
str	Target string

返回: Width (integer)

◆ horizontalAdvanceF()

qreal qwt::compat::horizontalAdvanceF	(	const QFontMetricsF &	fm,
		const QString &	str
	)

inline

Calculate the horizontal advance of a string (floating-point version)

参数

fm	QFontMetricsF object
str	Target string

返回: Width (floating-point)

◆ offsetTimeZone()

QTimeZone qwt::compat::offsetTimeZone ( int seconds )

inline

Create a time zone from an offset in seconds ahead of UTC

参数

seconds Offset in seconds from UTC

返回: QTimeZone with the given offset

注解: QTimeZone::fromSecondsAheadOfUtc() is available since Qt 6.4; for earlier versions the deprecated integer constructor is used.

◆ systemTimeZone()

QTimeZone qwt::compat::systemTimeZone ( )

inline

Get the system time zone

返回: QTimeZone representing the system's local time zone

◆ utcTimeZone()

QTimeZone qwt::compat::utcTimeZone ( )

inline

Get the UTC time zone

返回: QTimeZone representing UTC

注解: QTimeZone::utc() is available since Qt 6.5; for earlier versions the constructor with the IANA ID "UTC" is used.

◆ wheelEventDelta()

int qwt::compat::wheelEventDelta ( QWheelEvent * e )

inline

Get vertical wheel delta value compatible with Qt5 and Qt6

This function provides a unified interface to retrieve the vertical scroll delta from a QWheelEvent, supporting both Qt5 (using delta()) and Qt6 (using angleDelta().y()) without changing the calling code.

The return value represents the vertical scroll amount:

Positive value: Wheel scrolled up
Negative value: Wheel scrolled down
The magnitude follows the standard wheel step (typically ±120 per notch)

参数

e	Pointer to the QWheelEvent object (must not be nullptr)

返回: Integer delta value of vertical wheel movement

注解: The function only returns vertical wheel delta (ignores horizontal scroll via angleDelta().x())

警告: Ensure the input QWheelEvent pointer is valid to avoid null pointer dereference