一、效果图 二、代码构造思路 捕获鼠标点击事件，构建QDrag对象设置部件pixmap.重写dropEvent dragEnterEvent 实现自定义控件拖拽 三、代码片段
#include "dragdropwidget.h" #include "ui_dragdropwidget.h" dragdropwidget::dragdropwidget(QWidget *parent) : QWidget(parent), ui(new Ui::dragdropwidget) { m_srcIndex = -1; setAcceptDrops(true); ui->setupUi(this); for(int i=0;i<4;i++){ QLabel *btn = new QLabel(this); btn->setStyleSheet("background-color:#A9A9A9;font-family: Microsoft YaHei;font:bold 12px;color: #666666;text-align:right;"); btn->setText("LeftBtn"+QString::number(i)); ui->verticalLayout->addWidget(btn); } ui->verticalLayout->addStretch(); for(int i=0;i<4;i++){ QLabel *btn = new QLabel(this); btn->setStyleSheet("background-color:#A9A9A9;font-family: Microsoft YaHei;font:bold 12px;color: #666666;text-align:center;"); btn->setText("RightBtn"+QString::number(i)); ui->verticalLayout_2->addWidget(btn); } ui->verticalLayout_2->addStretch(); m_bleft = false; m_bright = false;; } dragdropwidget::~dragdropwidget() { delete ui; } int dragdropwidget::itemPressed(const QPoint &pos) { for (int index = 0; index < ui->verticalLayout->count()-1; index++) { QLayoutItem *item = ui->verticalLayout->itemAt(index); if (item->widget()->isVisible()) { QRect rect = item->widget()->geometry(); if(rect.contains(pos)){ m_bleft = true; return index; } } } for (int index = 0; index < ui->verticalLayout_2->count()-1; index++) { QLayoutItem *item = ui->verticalLayout_2->itemAt(index); if (item->widget()->isVisible()) { QRect rect = item->widget()->geometry(); if(rect.contains(pos)){ m_bright = true; return index; } } } return -1; } void dragdropwidget::dropEvent(QDropEvent *event) { qDebug()<<"dropEvent"; if(m_bleft) { ui->verticalLayout_2->insertWidget(ui->verticalLayout_2->count()-1,m_pwidget);m_pwidget->show(); } else if(m_bright) { ui->verticalLayout->insertWidget(ui->verticalLayout->count()-1,m_pwidget);m_pwidget->show(); } event->setDropAction(Qt::MoveAction); event->accept(); } void dragdropwidget::dragEnterEvent(QDragEnterEvent *event) { event->setDropAction(Qt::MoveAction); event->accept(); } void dragdropwidget::mousePressEvent(QMouseEvent *event) { m_bleft = false; m_bright = false; m_srcIndex = itemPressed(event->pos()); qDebug()<<"m_srcIndex"<<m_srcIndex; if(m_srcIndex == -1) return; QWidget *child; if(m_bleft) { child = ui->verticalLayout->takeAt(m_srcIndex)->widget(); ui->verticalLayout->removeWidget(child); } else if(m_bright) { child = ui->verticalLayout_2->takeAt(m_srcIndex)->widget(); ui->verticalLayout_2->removeWidget(child); } child->hide(); m_pwidget = child; ui->verticalLayout->removeWidget(child); QDrag *drag = new QDrag(this); QPixmap image = child->grab(child->rect()); QMimeData *mimeData = new QMimeData; mimeData->setData("data", ""); drag->setPixmap(image); drag->setMimeData(mimeData); drag->setHotSpot(event->pos() - child->pos()); drag->exec(Qt::MoveAction); } void dragdropwidget::mouseMoveEvent(QMouseEvent *event) { qDebug()<<"event->pos"<<event->pos(); }四、结语 欢迎各方多多指教 QQ:519096571 e-mail:519096571@qq.com
