基于PyQT实现区分左键双击和单击

 在PyQt中没有直接提供左键双击的判断方法，需要自己实现，其思路主要如下所示：

1、起动一个定时器，判断在指定的时间之内，点击次数超过2次，则视为双击（其主要思路判断两次点击的时间差在预测的条件以内）

2、 起动一个定时器，判断在指定的时间之内，点击次数超过2次，另外再获取鼠标点击的坐标，如果前后两次点击的坐标位置，属于同一个位置，满足这两个条件则判断为双击（其主要思路判断两次点击的时间差在预测的条件以内，且点击的坐标在预设的坐标之内，允许存在一定的偏差）

from PyQt5.QtCore import QTimer
from PyQt5 import QtCore, QtGui, QtWidgets

class myWidgets(QtWidgets.QTableWidget):

def __init__(self, parent=None):
   super(myWidgets, self).__init__(parent)
   self.isDoubleClick = False
   self.mouse = ""
 def mousePressEvent(self, e):
   # 左键按下
   if e.buttons() == QtCore.Qt.LeftButton:
     QTimer.singleShot(0, lambda: self.judgeClick(e))
   # 右键按下
   elif e.buttons() == QtCore.Qt.RightButton:
     self.mouse = "右"
   # 中键按下
   elif e.buttons() == QtCore.Qt.MidButton:
     self.mouse = '中'
   # 左右键同时按下
   elif e.buttons() == QtCore.Qt.LeftButton | QtCore.Qt.RightButton:
     self.mouse = '左右'
   # 左中键同时按下
   elif e.buttons() == QtCore.Qt.LeftButton | QtCore.Qt.MidButton:
     self.mouse = '左中'
   # 右中键同时按下
   elif e.buttons() == QtCore.Qt.MidButton | QtCore.Qt.RightButton:
     self.mouse = '右中'
   # 左中右键同时按下
   elif e.buttons() == QtCore.Qt.LeftButton | QtCore.Qt.MidButton | QtCore.Qt.RightButton:
     self.mouse = '左中右'
 def mouseDoubleClickEvent(self,e):
   # 双击
   self.mouse = "双击"
   self.isDoubleClick=True

def judgeClick(self,e):
   if self.isDoubleClick== False:
     self.mouse="左"
   else:
     self.isDoubleClick=False
     self.mouse = "双击"

或

from PyQt5.QtCore import QTimer
from PyQt5 import QtCore, QtGui, QtWidgets

class myWidgets(QtWidgets.QTableWidget):

def __init__(self, parent=None):
   super(myWidgets, self).__init__(parent)
   self.mouse = ""
   self.timer=QTimer(self)
   self.timer.timeout.connect(self.singleClicked)

def singleClicked(self):
   if self.timer.isActive():
     self.timer.stop()
     self.mouse="左"

def mouseDoubleClickEvent(self,e):
   if self.timer.isActive() and e.buttons() ==QtCore.Qt.LeftButton:
     self.timer.stop()
     self.mouse="双击"
   super(myWidgets,self).mouseDoubleClickEvent(e)

def mousePressEvent(self,e):
   if e.buttons()== QtCore.Qt.LeftButton:
     self.timer.start(1000)
   elif e.buttons()== QtCore.Qt.RightButton:
     self.mouse="右"
   super(myWidgets,self).mousePressEvent(e)

来源：https://www.cnblogs.com/surpassme/p/12812346.html