QTreeWidget

1.基本用法:

初始化用基本用到的:

//this->setMouseTracking(true);
this->setRootIsDecorated(false);
this->setSelectionMode(QAbstractItemView::ExtendedSelection);
this->setStyleSheet("QTreeWidget::item{height:25px}"); //设置行宽, 我也找不到提供的接口 setStyleSheet很强大建议看

this->setColumnWidth(0, 100); //设置列宽
this->setColumnCount(2);
QStringList lists;
lists << "NO" << "name";
this->setHeaderLabels(lists);

for (int i=0;i<10;i++)
{

QStringList contentList;

contentList << QString("00%1").arg(i) << "boy";

QTreeWidgetItem *pNewItem = new QTreeWidgetItem(this, contentList);  //增加

pNewItem->setBackgroundColor(0, QColor(150,0,0));

pNewItem->setFont(0, QFont());

}

//pNewItemRoot->setExpanded(true);  //展开子项

增加删除顶层用:
addTopLevelItem(QTreeWidgetItem*);

takeTopLeveltem(int);

topLevelItem(int); //返回

topLevelItemCount();
增加删除子层:
addChild(QTreeWidgetItem*);

addChildren(const QList<QTreeWidgetItem*>&);

takeChild(int);

takeChildren();

child(int) //返回

childCount();
2.进价:
//加checkbox, icon

pNewItem->setFlags(Qt::ItemIsSelectable | Qt::ItemIsUserCheckable |Qt::ItemIsEnabled);
pNewItem->setCheckState(0, Qt::Unchecked);

//pNewItem->setIcon(int , QIcon);

//向ITEM里放一些QT的控件,如QSpinBox,QComboBox,QPushButton等

this->setItemWidget(pNewItem, 0, new QSpinBox());

//获取某项的QRect, 有时候会很有用,如显缩略图:

QRect rect = this->visualItemRect(QTreeWidgetItem*);

//右键菜单重写

contextMenuEvent( QContextMenuEvent * event );或者使用信号itemPressed(QTreeWidgetItem*, int);

//对头的操作,可以用QLabel或者QTreeWidgetItem对头进行初始化,

//隐藏头

header()->hide();

m_pHeaderView->setClickable(true); //能够发射sectionClicked(int)信号,可做菜单,显示隐藏列:setSectionHidden(int, bool);isSectionHidden(int);
m_pHeaderView->setMovable(true);
m_pHeaderView->setResizeMode(0, QHeaderView::Fixed); //固定列宽
m_pHeaderView->setDefaultSectionSize(100); //默认

//排序

treeWidget->setSortingEnabled(true);

treeWidget->header()->setSortIndicatorShown(true);
treeWidget->header()->setSortIndicator(0, Qt::AscendingOrder);

//要自定义就用信号

connect( treeWidget->header(), SIGNAL( sectionClicked(int) ), this, SLOT( sectionClickedSlot(int) ) );
3.遍历QTreeWidgetItem：
QTreeWidgetItemIterator it(treeWidget);
while (*it) {
if ((*it)->text(0) == itemText)
(*it)->setSelected(true);
++it;
}

转载自：http://blog.csdn.net/zhy282289/article/details/6856972