看到一些人經(jīng)常會(huì)問(wèn)QTreeWidget的列寬怎么設(shè)啊,怎么固定列寬哦,行寬怎么設(shè)啊什么的.其實(shí)慢慢看manual就會(huì)找到了,下面就列下常用的方法:
//this->setMouseTracking(true);
this->setRootIsDecorated(false);
this->setSelectionMode(QAbstractItemView::ExtendedSelection);
this->setStyleSheet("QTreeWidget::item{height:25px}"); //設(shè)置行寬, 我也找不到提供的接口 setStyleSheet很強(qiáng)大建議看
this->setColumnWidth(0, 100); //設(shè)置列寬
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); //展開(kāi)子項(xiàng)
增加刪除頂層用:
addTopLevelItem(QTreeWidgetItem*);
takeTopLeveltem(int);
topLevelItem(int); //返回
topLevelItemCount();
增加刪除子層:
addChild(QTreeWidgetItem*);
addChildren(const QList<QTreeWidgetItem*>&);
takeChild(int);
takeChildren();
child(int) //返回
childCount();
//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());
//獲取某項(xiàng)的QRect, 有時(shí)候會(huì)很有用,如顯縮略圖:
QRect rect = this->visualItemRect(QTreeWidgetItem*);
//右鍵菜單重寫
contextMenuEvent( QContextMenuEvent * event );或者使用信號(hào)itemPressed(QTreeWidgetItem*, int);
//對(duì)頭的操作,可以用QLabel或者QTreeWidgetItem對(duì)頭進(jìn)行初始化,
//隱藏頭
header()->hide();
m_pHeaderView->setClickable(true); //能夠發(fā)射sectionClicked(int)信號(hào),可做菜單,顯示隱藏列:setSectionHidden(int, bool);isSectionHidden(int);
m_pHeaderView->setMovable(true);
m_pHeaderView->setResizeMode(0, QHeaderView::Fixed); //固定列寬
m_pHeaderView->setDefaultSectionSize(100); //默認(rèn)
//排序
treeWidget->setSortingEnabled(true);
treeWidget->header()->setSortIndicatorShown(true);
treeWidget->header()->setSortIndicator(0, Qt::AscendingOrder);
//要自定義就用信號(hào)
connect( treeWidget->header(), SIGNAL( sectionClicked(int) ), this, SLOT( sectionClickedSlot(int) ) );
在小項(xiàng)目里,使用qtreewidget完全足夠,
如果想更多靈活用法請(qǐng)使用QTreeView等 MODEL/VIEW控件