c++ - QTreeView disable selection on some rows -

i have json model, , populate qtreeview:

*-group1 | |   | *-item1     value1 | | | *-item2     value2 | *-group2   |   *-item4     value3 

now want disable selection groups, user can select rows items. , want achive without modification of model.

use proxy model such qidentityproxymodel , reimplement qabstractitemmodel::flags(), removing qt::itemisselectable flag group items:

qt::itemflags disablegroupproxymodel::flags(const qmodelindex& index) const {    const auto flags = qidentityproxymodel::flags(index);    if (index group) {        return flags & ~qt::itemisselectable;    }     return flags; } 

then set original (unmodified) model source model of proxy model , proxy model instance tree view’s model:

disablegroupproxymodel* proxy = new disablegroupproxymodel(this); proxy->setsourcemodel(originalmodel); treeview->setmodel(proxy);