如下所示：

#!/usr/bin/evn python3# -*- coding: utf-8 -*- import sysfrom PyQt5.QtWidgets import (QApplication, QWidget, QScrollArea, QLabel)from PyQt5.QtCore import QEvent class TestWindow(QWidget): def __init__(self): super(TestWindow, self).__init__() self.resize(800, 600) self.move(0, 0) # self.setMouseTracking(False) self.last_time_move = 0 self.initUI() def initUI(self): self.central_widget = QWidget(self) self.scroll_area = QScrollArea(self) self.scroll_area.setGeometry(0, 0, 400, 400) self.scroll_area.setWidgetResizable(True) self.scroll_bar = self.scroll_area.verticalScrollBar() self.scroll_contents = QWidget() self.scroll_contents.setGeometry(0, 0, 400, 800) self.scroll_contents.setMinimumSize(380, 1000) self.label_1 = QLabel(self.scroll_contents) self.label_1.move(50, 100) self.label_1.setText("HelloRyan") self.label_2 = QLabel(self.scroll_contents) self.label_2.move(50, 200) self.label_2.setText("你好") self.label_3 = QLabel(self.scroll_contents) self.label_3.move(50, 300) self.label_3.setText("-----------") self.label_4 = QLabel(self.scroll_contents) self.label_4.move(50, 400) self.label_4.setText("542543255235432543252") self.label_5 = QLabel(self.scroll_contents) self.label_5.move(50, 500) self.label_5.setText("5432543262542") self.label_6 = QLabel(self.scroll_contents) self.label_6.move(50, 600) self.label_6.setText("4325432532") self.scroll_area.setWidget(self.scroll_contents) self.scroll_area.installEventFilter(self) # def mouseMoveEvent(self, event): # if event.pos().x() > 0 and event.pos().x() < 400 and event.pos().y() > 0 and event.pos().y() < 400: # if self.last_time_move == 0: # self.last_time_move = event.pos().y() # # distance = self.last_time_move - event.pos().y() # self.scroll_bar.setValue(self.scroll_bar.value() + distance) # # self.last_time_move = event.pos().y() # print("move%d" % event.pos().y()) # # def mouseReleaseEvent(self, event): # self.last_time_move = 0 # print("up") def eventFilter(self, source, event): if event.type() == QEvent.MouseMove: print(event.pos().y()) if self.last_time_move == 0: self.last_time_move = event.pos().y() distance = self.last_time_move - event.pos().y() self.scroll_bar.setValue(self.scroll_bar.value() + distance) self.last_time_move = event.pos().y() elif event.type() == QEvent.MouseButtonRelease: self.last_time_move = 0 return QWidget.eventFilter(self, source, event) if __name__ == "__main__": app = QApplication(sys.argv) test = TestWindow() test.show() sys.exit(app.exec_())

以上这篇PyQt5实现让QScrollArea支持鼠标拖动的操作方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。