virtual QItemSelectionModel::SelectionFlags selectionCommand(const QModelIndex &index, const QEvent *ev = 0) const
	{
	//ev->type(): 2/3/4/5 mouse: press/release/DblPress/move   ;  6,7: Keyboard
		QList<int> mEvt;mEvt<<2<<3<<4<<5;
	if (mEvt.contains( ev->type() ))	{
		const QMouseEvent* Mev = static_cast<const QMouseEvent*>(ev);
		mEvt[0]= Mev->type();	 //2/3/4/5 mouse: press/release/DblPress/move
		mEvt[1]= Mev->buttons();//0/1/2/4 mouse: NoBtn/LB/RB/MB
		mEvt[2]= Mev->x();mEvt[3]= Mev->y();//x,y
	}
	else
		return QAbstractItemView::selectionCommand ( index, ev );

//--- Mouse event occur ----
	// TEST {
	QString str = QVariant(index.data()).toString();//QTreeView item data
	str +="(";str +=QString::number(index.row());str +=",";str +=QString::number(index.column());str +=") event:";//Selected item (Column,Row) 
	for (int i=0;i<4;i++){
		str += QString::number(mEvt[i]);str += ";";//Mouse: Function/Btn/(x,y)
	}
	emit SetTitle(str);//signal ...
	// TEST }

	if (((index.row()|index.column())<0) && mEvt[3] > 50)// out of index / out of (y)position - Clear All
		return (QItemSelectionModel::Clear);
	if (mEvt[1] & Qt::LeftButton)
		return (QItemSelectionModel::Select|QItemSelectionModel::Rows);
	if (mEvt[1] & (Qt::RightButton|Qt::MidButton))
		return (QItemSelectionModel::Clear);
	//default by Parent
	return QAbstractItemView::selectionCommand ( index, ev ) ;
	}