Simple QTimer Question

[shiranraviv]

Hi,
Im tryng to user QTimer in a regular class (not inherited form any QT feature),
I want to jump to OnTimer() when timeout() is occur.
and im looking forward the connect command...

For example:
class Display
{
Init()
{
QTimer *timer = new QTimer();
timer->setInterval( 50 );
timer->start();
connect(???);
}
OnTimer()
{
//commands..
}
}

[caduel]

QTimer::timeout() is a signal, thus you need a slot for it to connect to.
If your class does not (somehow) derive from QObject you don't and can't have any.
So you can not connect to OnTimeout(). Solution: Do make it a QObject.

[shiranraviv]

OK, so i understand right - this code i just wrote need to do it

mytimer.h
************
class MYTimer : public QObject
{
public:
MYTimer(...);

private slots:
void OnTimer();
private:
QTimer *mytimer;

};

mytimer.cpp
#include "mytimer.h"

MYTimer::MYTimer(...)
{
mytimer = new QTimer();
mytimer->setInterval( 50 );
mytimer->start();
connect(mytimer,SIGNAL(timeout()),SLOT(OnTimer())) ;
}
void MYTimer::OnTimer()
{
client->iterate();
}

and from my other class it looks like this
MYTimer *timer= new MYTimer(.....);

anyway it says that "Object::connect: No such slot QObject::OnTimer() in mytimer.cpp"

[Corinzio]

You missed the Q_OBJECT macro:
See in the docs: Q_OBJECT

should be in private section of your .h file

[shiranraviv]

Oh, you right... im sorry ... stupid mistake
but that just cause even a bigger problem -

"error: collect2: ld returned 1 exit status"
with this line before it:
"undefined reference to `vtable for MYTimer'"

any idea what is going on in here?

thanks alot

[shiranraviv]

Thanks alot!!!
Its working!!!


ohhhhhh