python3+PyQt5实现拖放功能

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：

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