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如下所示：
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#!/usr/bin/evn python3
# -*- coding: utf-8 -*-
import sys
from 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移动技术网。
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