How can do this:

middle column fill space

I already tried this way:

view->header()->setResizeMode(INDEX_COLUMN_SKU, QHeaderView::Interactive);
view->header()->setResizeMode(INDEX_COLUMN_NAME, QHeaderView::Stretch);
view->header()->setResizeMode(INDEX_COLUMN_QUANTITY, QHeaderView::Interactive);
view->header()->setResizeMode(INDEX_COLUMN_PRICE, QHeaderView::Interactive);

but does not work.

qt header size qtreeview
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