HM-SPMS/product/src/gui/GraphTool/NavigationTool/CTreeWidget.cpp

#include "CTreeWidget.h"
#include <QMouseEvent>

CTreeWidget::CTreeWidget(QWidget *parent)
    : QTreeWidget(parent)
{

}

void CTreeWidget::mousePressEvent(QMouseEvent *event)
{
    QTreeWidget::mousePressEvent(event);
    QModelIndex modelIndex = indexAt(event->pos());
    if(!modelIndex.isValid())
    {
        setCurrentIndex(QModelIndex());
    }
}