PyQt的 - 添加拖放窗口小部件

我有一个类，从QWidget的继承：PyQt的 - 添加拖放窗口小部件

from PyQt5.QtWidgets import * 


class Widget(QWidget): 
    def __init__(self, layoutname: str, width: int, height: int) -> None: 
     """ 
     Constructor, pass 0 to width and/or height if you want them to be defaults given at runtime 
     :param layoutname: Layout, a Layout object will be built according to the class name passed 
     :param width: int, width of the widget 
     :param height: int, height of the widget 
     """ 
     super(QWidget, self).__init__() 

    if width != 0: 
     self.setFixedWidth(width) 

    if height != 0: 
     self.setFixedHeight(height) 

    layout = layoutname() 
    self.setLayout(layout) 


def addChild(self, child: object)-> None: 
    """ 
    Adds child as a child to the widget 
    :param child: Widget, the child you want to add to the current widget 
    """ 
    self.layout().addWidget(child) 

def droppedR(self): 
    print("DROPPED")

我想补充以下功能：在窗口小部件时的东西被丢弃（比方说，一个文件），我想要调用droppedR（）。我怎样才能做到这一点？

来源

2017-06-02 Rémy Kaloustian