PyQt5-Qt Designer控件之间的伙伴关系和Tab顺序如何设置？

1 控件之间的伙伴关系

1.1 什么是伙伴关系？

• 其实说白了就是控件之间的关联关系，就是一个控件可以控件另一个控件；
• 比如某些窗口菜单的快捷键等。

1.2 如何来设置伙伴关系？

• 可以使用通过Qt Designer中的Edit-编辑伙伴来实现；

1.3 一个实例

• 拖动一个From Layout：

• 在From Layout中放置两个Label，两个Text Edit，一个PushButton：

• 然后对它们分别命名如下：

• 在用户名后设置ALT+A，密码设置ALT+B：

• 点击Qt Designer中的Edit-编辑伙伴，按住鼠标左键，拖动控件之间的关系即可：

• 保存为test013_partner.ui，并转成test013_partner.py:

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'test013_partner.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# 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, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.formLayoutWidget = QtWidgets.QWidget(self.centralwidget)
        self.formLayoutWidget.setGeometry(QtCore.QRect(160, 100, 281, 171))
        self.formLayoutWidget.setObjectName("formLayoutWidget")
        self.formLayout = QtWidgets.QFormLayout(self.formLayoutWidget)
        self.formLayout.setContentsMargins(0, 0, 0, 0)
        self.formLayout.setObjectName("formLayout")
        self.label = QtWidgets.QLabel(self.formLayoutWidget)
        self.label.setObjectName("label")
        self.formLayout.setWidget(0, QtWidgets.QFormLayout.LabelRole, self.label)
        self.label_2 = QtWidgets.QLabel(self.formLayoutWidget)
        self.label_2.setObjectName("label_2")
        self.formLayout.setWidget(1, QtWidgets.QFormLayout.LabelRole, self.label_2)
        self.lineEdit = QtWidgets.QLineEdit(self.formLayoutWidget)
        self.lineEdit.setObjectName("lineEdit")
        self.formLayout.setWidget(0, QtWidgets.QFormLayout.FieldRole, self.lineEdit)
        self.lineEdit_2 = QtWidgets.QLineEdit(self.formLayoutWidget)
        self.lineEdit_2.setObjectName("lineEdit_2")
        self.formLayout.setWidget(1, QtWidgets.QFormLayout.FieldRole, self.lineEdit_2)
        self.pushButton = QtWidgets.QPushButton(self.formLayoutWidget)
        self.pushButton.setObjectName("pushButton")
        self.formLayout.setWidget(2, QtWidgets.QFormLayout.FieldRole, self.pushButton)
        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.label.setBuddy(self.lineEdit)
        self.label_2.setBuddy(self.lineEdit_2)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.label.setText(_translate("MainWindow", "用户名(&A):"))
        self.label_2.setText(_translate("MainWindow", "密  码(&B):"))
        self.pushButton.setText(_translate("MainWindow", "登陆"))

• 创建main.py并执行：
• 可以通过ALT+A、ALT+B控制鼠标焦点。

2 Tab顺序如何设置？

2.1 什么是Tab顺序？

• 就是通过Tab键来控制鼠标焦点的顺序；
• 比如几个文本框，鼠标首次焦点定位在第一个框，按Tab键就会定位到下一个文本框。

2.2 如何设置Tab顺序？

• 通过Edit-编辑Tab顺序来实现；
• 比如先拖动几个Line Edit：
• 通过预览后，按住Tab键来观察鼠标的定位情况，是按照从第一个文本框到最后一个：
• 点击Edit-编辑Tab顺序，可以看到默认的Tab顺序：
• 可以通过鼠标左键点击，来控制顺序：
• 还有一种方式为我们直接右键-制表符顺序列表：
• 可以进行顺序的调整：
• 保存为test014_tab.ui，转成test014_tab.py：

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'test014_tab.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# 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, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(798, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit.setGeometry(QtCore.QRect(80, 30, 113, 20))
        self.lineEdit.setObjectName("lineEdit")
        self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit_2.setGeometry(QtCore.QRect(90, 80, 113, 20))
        self.lineEdit_2.setObjectName("lineEdit_2")
        self.lineEdit_3 = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit_3.setGeometry(QtCore.QRect(60, 120, 113, 20))
        self.lineEdit_3.setObjectName("lineEdit_3")
        self.lineEdit_4 = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit_4.setGeometry(QtCore.QRect(70, 170, 113, 20))
        self.lineEdit_4.setObjectName("lineEdit_4")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 798, 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)
        MainWindow.setTabOrder(self.lineEdit_3, self.lineEdit)
        MainWindow.setTabOrder(self.lineEdit, self.lineEdit_2)
        MainWindow.setTabOrder(self.lineEdit_2, self.lineEdit_4)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

• 创建main.py调用并执行：

# -*- coding:utf-8 -*-
# 作者：虫无涯
# 日期：2023/9/22
# 文件名称：main.py
# 作用：主程序入口
# 联系：VX(NoamaNelson)
# 博客：https://blog.csdn.net/NoamaNelson

import sys
from test_case.test014_tab import Ui_MainWindow
from PyQt5.QtWidgets import QApplication, QWidget, QMainWindow


if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(window)
    window.show()

    sys.exit(app.exec_())