ui.tableWidget_2->setSelectionBehavior(QAbstractItemView::SelectRows); //设置选择行为，以行为单位

ui.tableWidget_2->setSelectionMode(QAbstractItemView::SingleSelection); //设置选择模式，选择单行

openAction = new QAction("打开文件",this);

deleteAction = new QAction("删除文件", this);

closeAction = new QAction("退出菜单",this);

openAction->setShortcut(QKeySequence::Open);//设置打开快捷键

deleteAction->setShortcut(QKeySequence::Delete);

closeAction->setShortcut(QKeySequence::Quit);

ui.tableWidget_2->setContextMenuPolicy(Qt::CustomContextMenu);//设置上下文显示菜单的方式,Qt::CustomContextMenu是唯一与右键菜单相关的参数。

pMenu = new QMenu(ui.tableWidget_2);

pMenu->addAction(openAction);

pMenu->addAction(deleteAction);

pMenu->addAction(closeAction);

connect(openAction, SIGNAL(triggered(void)), this, SLOT(openActionSlot(void)));

connect(deleteAction, SIGNAL(triggered(void)), this, SLOT(deleteActionSlot(void)));

connect(closeAction, SIGNAL(triggered(void)), this, SLOT(closeActionSlot(void)));

/*This signal is emitted when the widget's contextMenuPolicy is Qt::CustomContextMenu, and the user has requested a context menu on the widget*/

connect(ui.tableWidget_2, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(customContextMenuRequestedSlot(QPoint)));　　//customContextMenuRequested(QPoint)信号是鼠标右击的时候产生的（注意，contextMenuPolicy必须是Qt：：CustomContextMenu， 并且用户已经请求了一个上下文菜单

/*如下是一些槽函数的定义*/
void MyFtp::customContextMenuRequestedSlot(QPoint point)

{

    pMenu->exec(QCursor::pos());    //运行并且显示右键菜单栏

}

void MyFtp::openActionSlot(void)

{

    int row = ui.tableWidget_2->currentRow();

    if (row!=-)

        chosedFilePath = ui.tableWidget_2->item(row,)->text();

    QProcess process;

    //process.startDetached(QString("explorer.exe /select,"+chosedFilePath));//注意，在切换盘符的时候将无法获取正确结果

#ifdef WIN32

    chosedFilePath.replace("/", "\\");    //***这句windows下必要***

#endif

    process.startDetached("explorer /select," + chosedFilePath);　　//打开指定目录，并选定指定文件

}

ui.tableWidget_2->setItem(j*fileNameList.size() + i,,new QTableWidgetItem(QString::number(chosedCarNum[j])));

int rowCount = ui.tableWidget_2->rowCount();

for (int i = rowCount - ; i >= ; i--)

　　ui.tableWidget_2->removeRow(i);