第一部分：ui界面设计
界面效果图如下：
ui文件(可拉动控件自行创建一个button和text）
python" id="highlighter_997879">
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<?xml version="1.0" encoding="utf-8"?>
<ui version="4.0">
<class>dialog</class>
<widget class="qdialog" name="dialog">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>585</width>
<height>394</height>
</rect>
</property>
<property name="windowtitle">
<string>dialog</string>
</property>
<widget class="qpushbutton" name="pushbutton">
<property name="geometry">
<rect>
<x>230</x>
<y>320</y>
<width>75</width>
<height>23</height>
</rect>
</property>
<property name="text">
<string>timer_click</string>
</property>
</widget>
<widget class="qtextedit" name="textedit">
<property name="geometry">
<rect>
<x>70</x>
<y>30</y>
<width>441</width>
<height>231</height>
</rect>
</property>
</widget>
</widget>
<resources/>
<connections>
<connection>
<sender>pushbutton</sender>
<signal>clicked()</signal>
<receiver>dialog</receiver>
<slot>timer_click()</slot>
<hints>
<hint type="sourcelabel">
<x>217</x>
<y>229</y>
</hint>
<hint type="destinationlabel">
<x>250</x>
<y>241</y>
</hint>
</hints>
</connection>
</connections>
<slots>
<slot>timer_click()</slot>
</slots>
</ui>
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生成的py文件
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# -*- coding: utf-8 -*-
# form implementation generated from reading ui file 'test_qt_from.ui'
#
# created by: pyqt5 ui code generator 5.11.3
#
# warning! all changes made in this file will be lost!
from pyqt5 import qtcore, qtgui, qtwidgets
class ui_dialog(object):
def setupui(self, dialog):
dialog.setobjectname("dialog")
dialog.resize(585, 394)
self.pushbutton = qtwidgets.qpushbutton(dialog)
self.pushbutton.setgeometry(qtcore.qrect(230, 320, 75, 23))
self.pushbutton.setobjectname("pushbutton")
self.textedit = qtwidgets.qtextedit(dialog)
self.textedit.setgeometry(qtcore.qrect(70, 30, 441, 231))
self.textedit.setobjectname("textedit")
self.retranslateui(dialog)
self.pushbutton.clicked.connect(dialog.timer_click)
qtcore.qmetaobject.connectslotsbyname(dialog)
def retranslateui(self, dialog):
_translate = qtcore.qcoreapplication.translate
dialog.setwindowtitle(_translate("dialog", "dialog"))
self.pushbutton.settext(_translate("dialog", "timer_click"))
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第二部分：主要逻辑代码
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from pyqt5 import qtwidgets, qtcore
from testqt.test_qt_from import ui_dialog
import sys
from pyqt5.qtcore import *
import time
# 继承qthread
class runthread(qtcore.qthread):
# python3,pyqt5与之前的版本有些不一样
# 通过类成员对象定义信号对象
_signal = pyqtsignal(str)
def __init__(self):
super(runthread, self).__init__()
def __del__(self):
self.wait()
def run(self):
print("run 666")
self._signal.emit("run 666"); # 信号发送
class testqtfromc(qtwidgets.qwidget, ui_dialog):
text =""
def __init__(self):
super(testqtfromc, self).__init__()
self.setupui(self)
#click
def timer_click(self):
self.thread = runthread() # 创建线程
self.thread._signal.connect(self.callbacklog) # 连接信号
self.thread.start() # 开始线程
# callback
def callbacklog(self, msg):
self.text =self.text+time.strftime("%y-%m-%d %h:%m:%s ", time.localtime())+msg+ "\n"
print(self.text)
# 回调数据输出到文本框
self.textedit.settext(self.text);
if __name__ == "__main__":
app = qtwidgets.qapplication(sys.argv)
mtestqtfromc = testqtfromc()
mtestqtfromc.show()
sys.exit(app.exec_())
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第三部分：运行效果图
点击click就可刷新界面了
以上这篇python之线程通过信号pyqtsignal刷新ui的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服务器之家。
原文链接：https://blog.csdn.net/IKNOWNU/article/details/83790074