A state machine for indicating mouse movements 更多...

#include <qwt_picker_machine.h>

类 QwtPickerTrackerMachine 继承关系图:

Public 成员函数
	QwtPickerTrackerMachine ()
	Constructor

virtual QList< Command >	transition (const QwtEventPattern &, const QEvent *) override
	Transition function that processes events and returns commands

Public 成员函数继承自 QwtPickerMachine
	QwtPickerMachine (SelectionType)
	Constructor

virtual	~QwtPickerMachine ()
	Destructor

void	reset ()
	Set the current state to 0 (initial state)

int	state () const
	Return the current state

void	setState (int)
	Change the current state

SelectionType	selectionType () const
	Return the selection type

额外继承的成员函数
Public 类型继承自 QwtPickerMachine
enum	SelectionType { NoSelection = -1 , PointSelection , RectSelection , PolygonSelection }
	Type of a selection. 更多...

enum	Command { Begin , Append , Move , Remove , End }
	Commands - the output of a state machine

详细描述

A state machine for indicating mouse movements

QwtPickerTrackerMachine supports displaying information corresponding to mouse movements, but is not intended for selecting anything. Begin/End are related to Enter/Leave events.

成员函数说明

◆ transition()

QList< QwtPickerMachine::Command > QwtPickerTrackerMachine::transition	(	const QwtEventPattern &	,
		const QEvent *	e
	)

overridevirtual

Transition function that processes events and returns commands

参数

[in]	eventPattern	Event pattern for matching
[in]	e	Event to process

返回: List of commands generated by the transition

实现了 QwtPickerMachine.

该类的文档由以下文件生成:

/home/runner/work/QWT/QWT/src/plot/qwt_picker_machine.h
/home/runner/work/QWT/QWT/src/plot/qwt_picker_machine.cpp

Public 成员函数

额外继承的成员函数

详细描述

成员函数说明

◆ transition()