DtRecursiveTimer Class Reference

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

Inheritance diagram for DtRecursiveTimer:

List of all members.

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

(

)

[inline, private, slot]

Generates the QTimerEvents.

---

Member Data Documentation

QMap<QTimer *, TimerInfo> DtRecursiveTimer::timers [private]

int DtRecursiveTimer::counter [private]

---

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

• include/tmqt/recursiveTimer.h