背景：为了节约人力测试成本，模拟鼠标长按后松开，整理了这个简单的小demo

1、关键方法

实例鼠标按下事件

QMouseEvent(QEvent.MouseButtonPress,  self.p_pos, Qt.MouseButton.LeftButton,  Qt.MouseButton.LeftButton, Qt.NoModifier)

实例鼠标松开事件

QMouseEvent(QEvent.MouseButtonRelease,  self.p_pos, Qt.MouseButton.LeftButton,  Qt.MouseButton.LeftButton, Qt.NoModifier)

发送鼠标事件

QCoreApplication.sendEvent(self.tb, event)

• 参数1: 接受对象
• 参数2: 鼠标事件

2、测试代码

import os
import sys
from PyQt5.Qt import *class Widget(QMainWindow):def __init__(self, parent=None):super().__init__(parent)self.resize(900, 600)self.p_pos = QPoint(0, 0)self.tb = QToolButton(self)self.tb.move(100, 200)self.tb.setAutoRepeat(True)self.tb.setText("测试")self.tb.clicked.connect(self.click_slot)t = QTimer(self)t.timeout.connect(self.timer_slot)t.start(4000)def timer_slot(self):print("timer_slot触发")# 1、按钮默认点击# self.tb.click()# 2、按钮模拟触发self.custom_press()def custom_press(self):print("鼠标按下")event = QMouseEvent(QEvent.MouseButtonPress,  self.p_pos, Qt.MouseButton.LeftButton,  Qt.MouseButton.LeftButton, Qt.NoModifier)QCoreApplication.sendEvent(self.tb, event)# 长按1后松开QTimer.singleShot(1000, self.custom_release)def custom_release(self):event = QMouseEvent(QEvent.MouseButtonRelease, self.p_pos, Qt.MouseButton.LeftButton, Qt.MouseButton.LeftButton, Qt.NoModifier)QCoreApplication.sendEvent(self.tb, event)print("鼠标松开")def click_slot(self):print("按钮被点击")if __name__ == '__main__':app = QApplication(sys.argv)parent_dir_path, file_name = os.path.split(os.path.abspath(__file__))_, parent_dir_name = os.path.split(parent_dir_path)app.setApplicationDisplayName(f"[{parent_dir_name}][{file_name}]")w = Widget()w.show()sys.exit(app.exec_())