21.QT-QTreeWidget,QTabWidget

void QTreeWidget::setHeaderItem (QTreeWidgetItem * item );
void QTreeWidget::setHeaderLabel ( constQString & label );
void QTreeWidget::setHeaderLabels ( constQStringList & labels );

QTreeWidget* tree = new QTreeWidget();

QStringList header;
header<<"column1"<<"column2"<<"column3";

tree->setHeaderLabels(header);
tree->show();

    QTreeWidget* tree = new QTreeWidget();
    QStringList header;
    header<<"column1"<<"column2"<<"column3";
    tree->setHeaderLabels(header);

    QTreeWidgetItem item1(tree);        //在树根下创建Item1节点,等价于： (void) new QTreeWidgetItem(tree,QStringList()<<"1"<<"2"<<"3");
    item1.setText(0,"1");
    item1.setText(1,"2");
    item1.setText(2,"3");

    QTreeWidgetItem item2(tree);      //在树根下创建Item2节点
    item2.setText(0,"4");
    item2.setText(1,"5");
    item2.setText(2,"6");

    QTreeWidgetItem item3(&item2);      //在Item2下创建Item3节点
    item3.setText(0,"child");

    tree->show();

QWidget w;
QTabWidget t(&w);
QPushButton btn("test");
t.addTab(&btn,"1st");
w.show();

void setTabPosition ( TabPosition );                   //设置标签tab位置

void setTabShape ( TabShape s );                   //设置标签tab外观

void removeTab ( int index );                     //移除掉某个index页面

insertTab ( int index, QWidget * page, const QIcon & icon, const QString & label );
                                                        //插入页面

setTabsClosable ( bool closeable );                    //设置每个页面是否有关闭按钮

setEnabled ( bool );                                 //设置所有页面是否可操作,为false则显示灰色

setTabEnabled ( int index, boolenable );            //设置单个tab页面是否可操作

void  currentChanged ( int index );
                            //当前页面发生改变后发送信号,index为新页面下标

void  tabCloseRequested ( int index );
                            //当点击index页面的关闭按钮时,发送信号