qtableview设置列宽度,如何通过模型设置QTableView列的宽度？

I'm using QTableView with a subclass of QAbstractTableModel as its model. By implementing data() and headerdata() in the subclassed model, it is feasible to control many properties of the table like data, header values, font, and so on.

In my case, I want the model to set the width of each table column. How can this be done?

解决方案

There are two ways:

In your model's data method you can return the role SizeHintRole.

A better way would be to subclass QItemDelegate and override the method.

Example -

QSize ItemDelegate::sizeHint( const QStyleOptionViewItem & option, const QModelIndex & index ) const

{

QSize sz;

if(index.column()==2)

{

return QSize(128, option.rect().height());

}

return QSize();

}

Here I am setting the width of column 2 to 128 pixels and I am filling in the height from the item rectangle held in QStyleOptionViewItem.