PyQT区分左键双击和左键单击

    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)