QTableView Model Help

[tntcoda]

Hi,

I'm having some problems working out how to implement the data() function from QAbstractTableModel for use in a QTableView model.

My data is stored in a large vector, that the model (which is read only) has a pointer to, I set up the headerData() function, so all the column names are correct and that works fine. rowCount and ColumnCount are also in my class, correct i think.

I have 4 columns, and x number or rows, so i just need some help with returning the correct data from the data() function.

Here is my code, im basically not sure how i use the index and role values in order to know a) which column the data is from, and b) the row number. I need these 2 values in order to know which data to get from the data vector. For example if its from column 2 and row 5, i know i need to return the subject from element 5 in the vector. Is it as simple as role is the column and index is the row?

QVariant QueueModel::data(const QModelIndex &index, int role) const
{
	if (!index.isValid() || role != Qt::DisplayRole)
		return QVariant();
 
	//return ....
}

QVariant QueueModel::data(const QModelIndex &index, int role) const
{
	if (!index.isValid() || role != Qt::DisplayRole)
		return QVariant();

	//return ....
}

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Also, do i have to do anything special to keep the view updating? i.e if i change a value in the data vector and another point in my program (outside of the model), will the view just update automatically?

Thanks alot for any tips,

Jack