PyQt5--ButtonDrag

# -*- coding:utf-8 -*-
'''
Created on Sep 21, 2018

@author: SaShuangYiBing

Comment: 
'''
import sys
from PyQt5.QtCore import Qt,QMimeData
from PyQt5.QtGui import QDrag
from PyQt5.QtWidgets import QApplication,QWidget,QPushButton

class Button(QPushButton):
    def __init__(self,title,parent):
        super().__init__(title,parent)
    
    def mouseMoveEvent(self, e):
        if e.buttons() != Qt.RightButton:
            return
        
        mimedata = QMimeData()
        drag = QDrag(self)
        drag.setMimeData(mimedata)
        drag.setHotSpot(e.pos()-self.rect().topLeft())
        dropAction = drag.exec_(Qt.MoveAction)
    
    def mousePressEvent(self, e):
        QPushButton.mousePressEvent(self,e)
        if e.button() == Qt.LeftButton:
            print ('Press')
            
class New_test(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()
        
    def initUI(self):
        self.setAcceptDrops(True)
        self.button = Button('Button',self)
        self.button.move(100,65)
        
        self.setGeometry(300,300,280,150)
        self.setWindowTitle('Click or Move')
        self.show()
    
    def dragEnterEvent(self, e):
        e.accept()
        
    def dropEvent(self, e):
        position = e.pos()
        self.button.move(position)
        
        e.setDropAction(Qt.MoveAction)
        e.accept()

if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = New_test()
    sys.exit(app.exec_())
        
        
        

在Button上右键拖动时，按钮会跟随鼠标移动，如果是在Button左键时，会在控制台上打印出 "press"