1、配置Qt designer外部工具

实质就是 Qt\bin 工具中 designer.exe

请查看 PyQt5开始入门、pyQt5 + pycharm 已经说明

2、Qt designer（Qt 设计师）使用

2.1 创建保存文件ui

文件apptest.ui 这个就是 PyQt5 的布局文件；

文件apptest.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0"><class>MainWindow</class><widget class="QMainWindow" name="MainWindow"><property name="geometry"><rect><x>0</x><y>0</y><width>800</width><height>600</height></rect></property><property name="windowTitle"><string>MainWindow</string></property><widget class="QWidget" name="centralwidget"/><widget class="QMenuBar" name="menubar"><property name="geometry"><rect><x>0</x><y>0</y><width>800</width><height>22</height></rect></property></widget><widget class="QStatusBar" name="statusbar"/></widget><resources/><connections/>
</ui>

2.2 pyuic5.exe 工具 转化成为py文件

可以使用 pyuic5.exe 工具 转化成为 apptest.py文件（查看 PyQt5开始入门、pyQt5 + pycharm）：

pyuic5 apptest.ui -o apptest.py

文件apptest.py

# -*- coding: utf-8 -*-# Form implementation generated from reading ui file 'apptest.ui'
#
# Created by: PyQt5 UI code generator 5.15.9
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.from PyQt5 import QtCore, QtGui, QtWidgetsclass Ui_MainWindow(object):def setupUi(self, MainWindow):MainWindow.setObjectName("MainWindow")MainWindow.resize(800, 600)self.centralwidget = QtWidgets.QWidget(MainWindow)self.centralwidget.setObjectName("centralwidget")MainWindow.setCentralWidget(self.centralwidget)self.menubar = QtWidgets.QMenuBar(MainWindow)self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 22))self.menubar.setObjectName("menubar")MainWindow.setMenuBar(self.menubar)self.statusbar = QtWidgets.QStatusBar(MainWindow)self.statusbar.setObjectName("statusbar")MainWindow.setStatusBar(self.statusbar)self.retranslateUi(MainWindow)QtCore.QMetaObject.connectSlotsByName(MainWindow)def retranslateUi(self, MainWindow):_translate = QtCore.QCoreApplication.translateMainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

添加main入口使用：

if __name__ == '__main__':app = QtWidgets.QApplication(sys.argv)MainWindow = QtWidgets.QMainWindow()ui = Ui_MainWindow()ui.setupUi(MainWindow)MainWindow.show()sys.exit(app.exec_())

2.3 直接导入UI文件

uic.loadUi(r'C:\Users\Administrator\Desktop\apptest.ui', self) 导入UI文件
from PyQt5.uic import loadUi

• UI文件中<widget class="QMainWindow" name="MainWindow"> 默认self；对应代码class Ui_MainWindow(QMainWindow)
• 其他widget可直接通过name使用，例如self.statusbar.showMessage('Ready')
  再举例添加菜单栏self.menubar.addAction(openAct)

#!/usr/bin/python3
# -*- coding: utf-8 -*-import sysfrom PyQt5 import QtCore
from PyQt5.QtWidgets import QApplication, QMainWindow, QAction, QFileDialog
from PyQt5.uic import loadUiclass Ui_MainWindow(QMainWindow):def __init__(self):super().__init__()loadUi(r'C:\Users\Administrator\Desktop\apptest.ui', self)self.setupUi()def setupUi(self):print("setupUI")self.resize(800, 600)self.statusbar.showMessage('Ready')self.menuBarUI()QtCore.QMetaObject.connectSlotsByName(self)def menuBarUI(self):openAct = QAction(self.menubar)openAct.setCheckable(False)openAct.setObjectName('openFileAction')openAct.triggered.connect(self.opendir)openAct.setText('打开')self.menubar.addAction(openAct)def opendir(self):dir = QFileDialog.getExistingDirectory(self, r"Open Directory","./",QFileDialog.ShowDirsOnly| QFileDialog.DontResolveSymlinks)print(str(dir))if __name__ == '__main__':app = QApplication(sys.argv)ui = Ui_MainWindow()ui.show()sys.exit(app.exec_())

2、qrc资源管理器

**qrc文件：**更多查看 PyQt5 资源管理

<!DOCTYPE RCC>
<RCC version="1.0"><qresource><file>images/icon.ico</file></qresource>
</RCC>