Qt 表格粘贴复制快捷键

//键盘按键按下
void QDefinTblView::keyPressEvent(QKeyEvent *e)
{    

    QModelIndexList indexList = this->selectedIndexes();
    foreach(QModelIndex index,indexList)
    {        
        if(this->indexWidget(index) != NULL)
        {
            QTableView::keyPressEvent(e);
            return;
        }

    }

    if(e->key()==16777249)
    {
        Key_Ctrl_Down=true;
    }
    if(e->key()==Qt::Key_C)
    {
        if(Key_Ctrl_Down)
        {
            DoCopy();
        }
    }    
    //QTableView::keyPressEvent(e);
}
//键盘按键释放
void QDefinTblView::keyReleaseEvent(QKeyEvent *e)
{    
    QModelIndexList indexList = this->selectedIndexes();
    foreach(QModelIndex index,indexList)
    {
        if(this->indexWidget(index) != NULL)
        {
            QTableView::keyReleaseEvent(e);
            return;
        }

    }
    
    if(e->key()==16777249)
    {
        Key_Ctrl_Down=false;
    }
    if(e->key()==Qt::Key_V)
    {
        if(Key_Ctrl_Down)
        {
            DoPaste();//粘贴
        }
    }    

}