通过重载QAbstractTableModel中的data方法

QVariant CTblModel::data(const QModelIndex &index, int role) const  
{  
    if (!index.isValid())  
        return QVariant();  
      
    int col = index.column();  
    if (col == ledColIndex && role == Qt::DecorationRole)  
    {  
        return QIcon(":/images/light.png");  
    }  
    else  
    {  
        ...  
    }  
    return QVariant();  
}  

鼠标点击灯泡亮
重载QTableView的 mousePressEvent()，通过indexAt方找到当前单击的index，再根据索引找到灯泡所在的列，具体实现如下：

[cpp] view plaincopyprint?void CTblView::mouseMoveEvent(QMouseEvent *event)  
{  
    const QPoint &p = event->pos();  
    QModelIndex modelIndex = indexAt(p);  
    if (modelIndex.isValid())  
    {  
        int col = modelIndex.column();  
        int row = modelIndex.row();  
        if (col == ledColIndex)  
        {  
            pTblModel->setLight(row);  
        }  
    }  
}