Qt 拖放功能详解详细示例代码

#include "DialogDrop.h" #include "ui_DialogDrop.h" #include <QDragEnterEvent> #include <QMimeData> #include <QDebug> DialogDrop::DialogDrop(QWidget *parent) : QDialog(parent), ui(new Ui::DialogDrop) { ui->setupUi(this); this->setAcceptDrops(true); } DialogDrop::~DialogDrop() { delete ui; } void DialogDrop::dragEnterEvent(QDragEnterEvent *event) { qDebug()<<"dragEnterEvent: "<<event->mimeData()->text(); if (event->mimeData()->hasText()) { event->acceptProposedAction(); // 可选：更改控件样式或添加临时图标，表示接受拖放 } } void DialogDrop::dropEvent(QDropEvent *event) { if (event->mimeData()->hasText()) { QString droppedText = event->mimeData()->text(); // 处理拖放的文本数据 ui->label_result->setText(droppedText); event->accept(); } }