python3+PyQt5实现拖放

本文是对《Python Qt GUI快速编程》的第10章的例子拖放用Python3+PyQt5进行改写，对图表列表，表格等进行相互拖放，基本原理雷同，均采用setAcceptDrops(True)和setDragEnabled(True)。

#!/usr/bin/env python3
import os
import sys
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import (QApplication, QDialog, QHBoxLayout,
        QListWidget, QListWidgetItem, QSplitter, QTableWidget)
from PyQt5.QtGui import QIcon

class Form(QDialog):

    def __init__(self, parent=None):
        super(Form, self).__init__(parent)

        listWidget = QListWidget()
        listWidget.setAcceptDrops(True)
        listWidget.setDragEnabled(True)

        path = os.path.dirname(__file__)
        for image in sorted(os.listdir(os.path.join(path, "images"))):
            if image.endswith(".png"):
                item = QListWidgetItem(image.split(".")[0].capitalize())
                item.setIcon(QIcon(os.path.join(path,
                                   "images/{0}".format(image))))
                listWidget.addItem(item)
        iconListWidget = QListWidget()
        iconListWidget.setAcceptDrops(True)
        iconListWidget.setDragEnabled(True)
        iconListWidget.setViewMode(QListWidget.IconMode)                  

        tableWidget = QTableWidget()
        tableWidget.setRowCount(5)
        tableWidget.setColumnCount(2)
        tableWidget.setHorizontalHeaderLabels(["Column #1", "Column #2"])
        tableWidget.setAcceptDrops(True)
        tableWidget.setDragEnabled(True)

        splitter = QSplitter(Qt.Horizontal)
        splitter.addWidget(listWidget)
        splitter.addWidget(iconListWidget)
        splitter.addWidget(tableWidget)
        layout = QHBoxLayout()
        layout.addWidget(splitter)
        self.setLayout(layout)

        self.setWindowTitle("Drag and Drop")

if __name__ == "__main__":
    app = QApplication(sys.argv)
    form = Form()
    form.show()
    app.exec_()

运行结果：