如何实现从pyqt5应用程序到其他应用程序（MS Word或PDF）的拖放？

Question

我试图将图像从文件夹/目录加载到标签中，然后再添加到网格布局中。之后，我想使用拖放功能将所选图像从pyqt5应用程序拖动到Microsoft Word应用程序。是代码

import os

from PyQt5 import QtCore, QtWidgets
from PyQt5.QtGui import  QPixmap, QCursor
class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(862, 574)
        self.centralwidget = QtWidgets.QWidget(MainWindow)

        #path to folder
        folderPath = "data\images\collections"
        #lopping through the folder to image names
        for row,file in enumerate(os.listdir(folderPath)):
            #setting number of cols per row
            for cols in range(4):
                lab = QtWidgets.QLabel(self.scrollAreaWidgetContents_9)
                pixmap = QPixmap(os.path.join(folderPath, file))
                #adding image to label
                lab.setPixmap(pixmap)
                lab.setScaledContents(True)
                #adding labels to grid layout
                self.gridLayout_2.addWidget(lab, row, cols, 1, 1)