1、Qt中的QTreeWidget和QTreeWidgetItem 的使用可以实现树形表。 按照MVC设计，Qt中提倡用QTreeView，但是没有提供对应的Model，可以通过埠们萁猕自定义QStandardItemModel一起实现，但是比较复杂。不推荐使用。/*** @brief 初始化报表数据*/void ReportTree::initReportData(){ //根节点的数据项 QStringList itemStringlist; itemStringlist << "All EventS" <<"10000" << "100%" << "100%"; QTreeWidgetItem *rootItem = new QTreeWidgetItem(ui.treeWidget, itemStringlist); QPixmap pixmap(10,10);//新建一个Pixmap图 pixmap.fill(QColor(Qt::black));//填充色 QIcon icon(pixmap); rootItem->setIcon(0, icon);//设置图标 //根节点的孩子节点1 QStringList leafStringList1; leafStringList1 << "Gate1" << "8000"<<"80%"<<"80%"; QTreeWidgetItem *leafItem1 = new QTreeWidgetItem(rootItem, leafStringList1); pixmap.fill(QColor(Qt::red)); leafItem1->setIcon(0, pixmap); //根节点的孩子节点2 QStringList leafStringList2; leafStringList2 << "Gate2" << "4000" << "40%" << "40%"; QTreeWidgetItem *leafItem2 = new QTreeWidgetItem(rootItem, leafStringList2); pixmap.fill(QColor(Qt::green)); leafItem2->setIcon(0, pixmap); //根节点的孩子节点3 QStringList leafStringList3; leafStringList3 << "Gate3" << "2000" << "20%" << "20%"; QTreeWidgetItem *leafItem3 = new QTreeWidgetItem(rootItem, leafStringList3); pixmap.fill(QColor(Qt::blue)); leafItem3->setIcon(0, pixmap); //节点3的孩子节点1_in_3 QStringList leafStringList1_In_3; leafStringList1_In_3 << "Gate1_in_3" << "1000" << "50%" << "10%"; QTreeWidgetItem *leafItem1_in_3 = new QTreeWidgetItem(leafItem3, leafStringList1_In_3); pixmap.fill(QColor(Qt::gray)); leafItem1_in_3->setIcon(0, pixmap); //给节点3添加孩子节点 leafItem3->addChild(leafItem1_in_3); //节点3的孩子节点2_in_3 QStringList leafStringList2_In_3; leafStringList2_In_3 << "Gate2_in_3" << "500" << "40%" << "2%"; QTreeWidgetItem *leafItem2_in_3 = new QTreeWidgetItem(leafItem3, leafStringList2_In_3); pixmap.fill(QColor(Qt::darkCyan)); leafItem2_in_3->setIcon(0, pixmap); leafItem3->addChild(leafItem2_in_3); //给根节点添加孩子节点 rootItem->addChild(leafItem1); rootItem->addChild(leafItem2); rootItem->addChild(leafItem3);}
2、Qt中QWidget的移动。只需要重写一个QWidget的子类，将如下三个事件重载。即可实现在标题栏附近移动窗口。但是当前窗口的父窗口指定，而且当前窗口背景是透明的，需要QSS自定义颜色。//指定当前窗口要显示的父类窗口 reportTree = new ReportTree(this); reportTree->setVisible(false);void ReportTree::mousePressEvent(QMouseEvent *event){ //只能是鼠标左键移动和改变大小 if (event->button() == Qt::LeftButton) { if (event->y() > 33)//控制在标题栏内，才可以拖动窗口 { event->ignore(); return; } mouse_press = true; } //窗口移动距离 move_point = event->globalPos() - pos();}void ReportTree::mouseReleaseEvent(QMouseEvent *){ mouse_press = false;}void ReportTree::mouseMoveEvent(QMouseEvent *event){ if (event->y() <= 33)//控制在标题栏内，才可以拖动窗口 { setCursor(Qt::SizeAllCursor); } else { setCursor(Qt::ArrowCursor); } //移动窗口 if (mouse_press) { QPoint move_pos = event->globalPos(); move(move_pos - move_point); }}
3、Qt中窗口的自定义风格Qt本身的标题栏和VC一样风格，比较挫。当你在陕择遑握父窗口内显示QWidget，它会自动隐藏标烙疋艘烯题栏和边框。所以只需要自定义一个标题栏即可。至于关闭按钮的效果，通过QSS是无法实现的。只需要用自定义一个PushButton即可，实现正常，hover，pressed三种状态。PushButton::PushButton(QWidget *parent) :QPushButton(parent){ status = NORMAL; mouse_press = false;}PushButton::~PushButton(){}void PushButton::setPicName(QString pic_name){ this->pic_name = pic_name; setFixedSize(QPixmap(pic_name).size());}void PushButton::enterEvent(QEvent *){ status = ENTER; update();}void PushButton::mousePressEvent(QMouseEvent *event){ //若点击鼠标左键 if(event->button() == Qt::LeftButton) { mouse_press = true; status = PRESS; update(); }}void PushButton::mouseReleaseEvent(QMouseEvent *event){ //若点击鼠标左键 if(mouse_press && this->rect().contains(event->pos())) { mouse_press = false; status = ENTER; update(); emit clicked(); }}void PushButton::mouseMoveEvent(QMouseEvent *event){ //控制在标题栏内，才可以拖动窗口 setCursor(Qt::ArrowCursor);}void PushButton::leaveEvent(QEvent *){ status = NORMAL; update();}void PushButton::paintEvent(QPaintEvent *){ QPainter painter(this); QPixmap pixmap; switch(status) { case NORMAL: { pixmap.load(pic_name); break; } case ENTER: { pixmap.load(pic_name + QString("_hover")); break; } case PRESS: { pixmap.load(pic_name + QString("_pressed")); break; } case NOSTATUS: { pixmap.load(pic_name); break; } default: pixmap.load(pic_name); } painter.drawPixmap(rect(),pixmap);}
4、作者：柳北风儿 博客