DtRecursiveTimer Class Reference

As of Qt 4.4, QTimers no longer allow recursion. More...

Inheritance diagram for DtRecursiveTimer:

Classes
struct	TimerInfo

Public Member Functions
	DtRecursiveTimer (QObject *parent=0)
	~DtRecursiveTimer ()
int	start (QObject *object, int duration, bool singleShot=false)
	Starts a timer.
void	stop (int id)

Private Slots
void	onTimerInvoked ()
	Generates the QTimerEvents.

Private Attributes
QMap< QTimer *, TimerInfo >	timers
int	counter

Detailed Description

As of Qt 4.4, QTimers no longer allow recursion.

This class is based on a work-around from TrollTech. It is used by DtTMApplication and DtVrf3DGuiApplication. It operates by posting new QTimerEvents to the QApplication's event queue. To receive the events derived classes must override QObject::timerEvent and check to see if the timerId matches the one returned by start(). If not, it should be passed down to the base class.

Constructor & Destructor Documentation

DtRecursiveTimer::DtRecursiveTimer ( QObject *  parent = 0 )

inline

DtRecursiveTimer::~DtRecursiveTimer ( )

inline

Member Function Documentation

int DtRecursiveTimer::start ( QObject *  object, int  duration, bool  singleShot = false  )

inline

Starts a timer.

Parameters

object	the parent object, usually "this"
duration	counter time in miliseconds
singleShot	if true the timer will only fire once

References DtRecursiveTimer::TimerInfo::id, DtRecursiveTimer::TimerInfo::object, and DtRecursiveTimer::TimerInfo::singleShot.

void DtRecursiveTimer::stop ( int  id )

inline

void DtRecursiveTimer::onTimerInvoked ( )

inlineprivateslot

Generates the QTimerEvents.

Member Data Documentation

QMap<QTimer *, TimerInfo> DtRecursiveTimer::timers

private

int DtRecursiveTimer::counter

private

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The documentation for this class was generated from the following file:

• /exports/nfedora7-1/nightly/docs/vrforcesDevelopment.tot/include/tmqt/recursiveTimer.h