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> |
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, qtwidgetsclass 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")) |
第二部分：主要逻辑代码
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from pyqt5 import qtwidgets, qtcorefrom testqt.test_qt_from import ui_dialogimport sysfrom pyqt5.qtcore import *import time# 继承qthreadclass 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_()) |
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
