How to delay a Signal?

[trusch]

Hello,

i have got a qtablewidget and i need a delayed hover effect. So I connected the table with my private slot (testslot):

connect(tableWidget, SIGNAL(itemEntered(QTableWidgetItem*)), this, SLOT(testslot()));

But this is without a delay. The mousepointer should stand 2 or 3 second over the table and then activate the signal.

Thanks

[Lykurg]

I don't think there is such an option for delay in connect(), but you could simply use a QTimer with 2 seconds inside your slot.

[trusch]

Thanks for answering,
but this isn`t the right solution. I wont only a signal, if the mousepointer was 2-3 seconds over the table. With your idea, the signal is 2-3 seconds later on my slot, also if the mouse was only 1 second over the table.

[Lykurg]

Ok, I've misunderstand you. In your case you have to subclass and use QWidget::enterEvent() and QWidget::leaveEvent() (in conjunction with a QTimer) to prove if the cursor was 3 sec over the widget and then send your own signal.

[aekilic]

what you could do is using QTimer like

QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(setT()));
timer->start(1000);
 
void setT()
{
xxxx->blockSignals(true);
}

QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(setT()));
timer->start(1000);

void setT()
{
xxxx->blockSignals(true);
}

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[Lykurg]

Since I hate my work right now and the van Damme movie, I currently watch, sucks, I am gentile and post the code I was thinking of...

/// local timer t.
XX::XX()
{
  t.setSingleShot(true);
  connect(&t, SIGNAL(timeout()), this, SLOT(timerslot()));
}
 
XX::timerslot()
{
  // if you want do so something right here, if not, you could 
  // direct emit the signal in the connect statement.
  emit mouseFor3SecondsOverWidget();
}
 
XX::enterEvent()
{
  t.start(3000);
}
 
 
XX::enterLeave()
{
  t.stop();
}

/// local timer t.
XX::XX()
{
  t.setSingleShot(true);
  connect(&t, SIGNAL(timeout()), this, SLOT(timerslot()));
}

XX::timerslot()
{
  // if you want do so something right here, if not, you could 
  // direct emit the signal in the connect statement.
  emit mouseFor3SecondsOverWidget();
}

XX::enterEvent()
{
  t.start(3000);
}


XX::enterLeave()
{
  t.stop();
}

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[trusch]

Thanks a lot!