slot中传参数出了有关问题_QT开发

slot中传参数出了问题

C/C++ code

        QTreeWidgetItem *item = new QTreeWidgetItem(0);     item->setText(0,name);    friendView->addTopLevelItem(item);     messageView->append(item->text(0));    connect(friendView, SIGNAL(itemClicked(QTreeWidgetItem*, int)),        this, SLOT(openNewDialog(QString))); // 这里我想把item->text(0)作为openNewDialog()的参数传过去

C/C++ code

void MyMainWindow::openNewDialog(QString name ){    //messageView->append("sign");    MyDialog *md = new MyDialog(name);      md->show();     md->raise();     md->activateWindow();}

然后运行程序后，点击item 没有反应，？？？

------解决方案--------------------
LZ错了信号槽的信号函数和槽函数的形参类型必须一致才能进行参数传递
connect(friendView, SIGNAL(itemClicked(QTreeWidgetItem*, int)),
this, SLOT(openNewDialog(QString)));

openNewDialog(QString)得才成openNewDialog(QTreeWidgetItem*, int），保持两个函数形参一致

探讨
C/C++ code

QTreeWidgetItem *item = new QTreeWidgetItem(0);
item->setText(0,name);
friendView->addTopLevelItem(item);
messageView->append(item->text(0));
connect(friendView,……

------解决方案--------------------
你可以传过去(QTreeWidgetItem* ,int),然后再用 item->text(0)，作为你想处理的字段读取！