How to show progess in a QTreeView item ?

[jpn]

The QStyleOptionViewItem parameter contains all required information.

if (opt.state & QStyle::State_Selected)
   ...
 
if (opt.state & QStyle::State_HasFocus)
   ...

if (opt.state & QStyle::State_Selected)
   ...

if (opt.state & QStyle::State_HasFocus)
   ...

To copy to clipboard, switch view to plain text mode 

etc.