Anyway of updating a QTableView when model signals turned off?

Hi,

When I block signals on my model which my tableview uses it is so much faster at updating, but it only updates if I click on the tableview ( repaint ). Was wondering if there is a way to update the view without having to do this?

Regards,
Steve

Unblock signals on time and emit layoutChanged() or reset the model. Or better yet - insert all items at once into the model.

Hi,

What do you mean by unblock signals on time? This after something is inserted? Unfortunately, the data in the model is continuously updated, so I guess I can't insert all items at once?

Regards,
Steve

There is no such thing as "continously". You can update the model every second or so with all items gathered through that time. I'm sure your users won't mind a small lag.

Thanks,

I am updating the model every 5 milliseconds, the model is preloaded with data and certain parts of this data is updated ( such as reading signal from a car for the rpm ).

This is the code I have now which is called every 5 milliseconds :

Code:

---

void DACanTreeModel::updateTable( QString strData, QString strId )
{
	QList<QObject*> *pList = theApp->m_dcb.GetSignalList();
	if( pList )
	{
		for( int i = 0; i < pList->count(); i++ )
		{
			CDADcb::CSignal* pSignal = (CDADcb::CSignal*)pList->at(i);
 
			// This signal belong to this CAN id, there can be many signals that do
			if( pSignal->m_strId == strId )
			{
				// we need to do the conversion here - TODO
				pSignal->m_strRawData = strData;  
				pSignal->m_nCount++;
			}
		}
		emit layoutChanged();
	}
}

---

Change 5 miliseconds to 500 miliseconds. 5ms i 1/200 of a second - human eye can't distinguish anything that's shorter than 0.05s (50ms). And don't block signals, it's not required in this situation.