Class derivated from QTableView, setcolumnwidth(col,width) doesn't do anything

stephane78

Hi,
I have an object tableview from a class derivated from QTableView and SetColumnWidth(col,size) doesn't do anything.tableview has always the same size and each column has the same size and I cannot change that with setcolumnwidth.
Is it because I use a custom delegate to paint one column and in the case of other columns I call ```
QStyledItemDelegate::paint(painter, option, index);

? 
What Can I do to change the size of each column ?
tableview is inside a QGroupbox.and I use here Qt5.6.0.

stephane78

I have put

else if (role == Qt::SizeHintRole) {
        switch(nColumn)
        {
            case 0: return QSize(40,40);
            case 1: return QSize(50,40);
            case 2: return QSize(50,40);
            case 3: return QSize(130,40);
            case 4: return QSize(130,40);
            case 5: return QSize(40,40);
            case 6: return QSize(40,40);
        default:
            break;
        }

in the data and Headerdata method of my model class and it is better now because tableview is not too large anymore, but each column has always the same width although....

stephane78

I have put that :

if (qobject_cast<QHeaderView *>(parent()) != 0)
    {
     
        if ((index.column()==n_file)||(index.column()==n_execinfo))
        {

        width = 150;
        height =20;
        return QSize(width,height);
        }
        else return QSize(40,20);
    }
    else if (qobject_cast<QTableView *>(parent()) != 0)
    {
        QTableView *v = qobject_cast<QTableView *>(parent());
        width = v->columnWidth(index.column());
        height=v->rowHeight(0);
        return QSize(width,height);
}

in the overloading of the method sizehint of my delegate but it is useless...

stephane78

I think I should use a QTableWidget without delegate and with multiple inheritance to set the width of each column.....