1.使用布局管理器进行布局

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

# Form implementation generated from reading ui file 'layoutWin.ui'
#
# Created by: PyQt5 UI code generator 5.8.1
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(621, 621)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.horizontalLayoutWidget = QtWidgets.QWidget(self.centralwidget)
        self.horizontalLayoutWidget.setGeometry(QtCore.QRect(40, 30, 341, 31))
        self.horizontalLayoutWidget.setObjectName("horizontalLayoutWidget")
        self.horizontalLayout = QtWidgets.QHBoxLayout(self.horizontalLayoutWidget)
        self.horizontalLayout.setContentsMargins(0, 0, 0, 0)
        self.horizontalLayout.setObjectName("horizontalLayout")
        self.label = QtWidgets.QLabel(self.horizontalLayoutWidget)
        self.label.setObjectName("label")
        self.horizontalLayout.addWidget(self.label)
        self.lineEdit = QtWidgets.QLineEdit(self.horizontalLayoutWidget)
        self.lineEdit.setObjectName("lineEdit")
        self.horizontalLayout.addWidget(self.lineEdit)
        self.pushButton = QtWidgets.QPushButton(self.horizontalLayoutWidget)
        self.pushButton.setObjectName("pushButton")
        self.horizontalLayout.addWidget(self.pushButton)
        self.verticalLayoutWidget = QtWidgets.QWidget(self.centralwidget)
        self.verticalLayoutWidget.setGeometry(QtCore.QRect(40, 80, 341, 80))
        self.verticalLayoutWidget.setObjectName("verticalLayoutWidget")
        self.verticalLayout = QtWidgets.QVBoxLayout(self.verticalLayoutWidget)
        self.verticalLayout.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout.setObjectName("verticalLayout")
        self.label_2 = QtWidgets.QLabel(self.verticalLayoutWidget)
        self.label_2.setObjectName("label_2")
        self.verticalLayout.addWidget(self.label_2)
        self.lineEdit_2 = QtWidgets.QLineEdit(self.verticalLayoutWidget)
        self.lineEdit_2.setObjectName("lineEdit_2")
        self.verticalLayout.addWidget(self.lineEdit_2)
        self.pushButton_2 = QtWidgets.QPushButton(self.verticalLayoutWidget)
        self.pushButton_2.setObjectName("pushButton_2")
        self.verticalLayout.addWidget(self.pushButton_2)
        self.formLayoutWidget = QtWidgets.QWidget(self.centralwidget)
        self.formLayoutWidget.setGeometry(QtCore.QRect(40, 430, 261, 91))
        self.formLayoutWidget.setObjectName("formLayoutWidget")
        self.formLayout = QtWidgets.QFormLayout(self.formLayoutWidget)
        self.formLayout.setContentsMargins(0, 0, 0, 0)
        self.formLayout.setObjectName("formLayout")
        self.label_5 = QtWidgets.QLabel(self.formLayoutWidget)
        self.label_5.setObjectName("label_5")
        self.formLayout.setWidget(0, QtWidgets.QFormLayout.LabelRole, self.label_5)
        self.lineEdit_7 = QtWidgets.QLineEdit(self.formLayoutWidget)
        self.lineEdit_7.setObjectName("lineEdit_7")
        self.formLayout.setWidget(0, QtWidgets.QFormLayout.FieldRole, self.lineEdit_7)
        self.label_6 = QtWidgets.QLabel(self.formLayoutWidget)
        self.label_6.setObjectName("label_6")
        self.formLayout.setWidget(1, QtWidgets.QFormLayout.LabelRole, self.label_6)
        self.lineEdit_8 = QtWidgets.QLineEdit(self.formLayoutWidget)
        self.lineEdit_8.setObjectName("lineEdit_8")
        self.formLayout.setWidget(1, QtWidgets.QFormLayout.FieldRole, self.lineEdit_8)
        self.pushButton_3 = QtWidgets.QPushButton(self.formLayoutWidget)
        self.pushButton_3.setObjectName("pushButton_3")
        self.formLayout.setWidget(2, QtWidgets.QFormLayout.LabelRole, self.pushButton_3)
        self.pushButton_4 = QtWidgets.QPushButton(self.formLayoutWidget)
        self.pushButton_4.setObjectName("pushButton_4")
        self.formLayout.setWidget(2, QtWidgets.QFormLayout.FieldRole, self.pushButton_4)
        self.gridLayoutWidget = QtWidgets.QWidget(self.centralwidget)
        self.gridLayoutWidget.setGeometry(QtCore.QRect(40, 180, 411, 231))
        self.gridLayoutWidget.setObjectName("gridLayoutWidget")
        self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget)
        self.gridLayout.setContentsMargins(0, 0, 0, 0)
        self.gridLayout.setObjectName("gridLayout")
        self.pushButton_11 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_11.setObjectName("pushButton_11")
        self.gridLayout.addWidget(self.pushButton_11, 2, 0, 1, 1)
        self.pushButton_12 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_12.setObjectName("pushButton_12")
        self.gridLayout.addWidget(self.pushButton_12, 2, 1, 1, 1)
        self.pushButton_13 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_13.setObjectName("pushButton_13")
        self.gridLayout.addWidget(self.pushButton_13, 2, 2, 1, 1)
        self.pushButton_9 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_9.setObjectName("pushButton_9")
        self.gridLayout.addWidget(self.pushButton_9, 1, 1, 1, 1)
        self.pushButton_6 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_6.setObjectName("pushButton_6")
        self.gridLayout.addWidget(self.pushButton_6, 0, 1, 1, 1)
        self.pushButton_8 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_8.setObjectName("pushButton_8")
        self.gridLayout.addWidget(self.pushButton_8, 1, 0, 1, 1)
        self.pushButton_7 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_7.setObjectName("pushButton_7")
        self.gridLayout.addWidget(self.pushButton_7, 0, 2, 1, 1)
        self.pushButton_15 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_15.setObjectName("pushButton_15")
        self.gridLayout.addWidget(self.pushButton_15, 1, 3, 1, 1)
        self.pushButton_16 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_16.setObjectName("pushButton_16")
        self.gridLayout.addWidget(self.pushButton_16, 2, 3, 1, 1)
        self.pushButton_14 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_14.setObjectName("pushButton_14")
        self.gridLayout.addWidget(self.pushButton_14, 0, 3, 1, 1)
        self.pushButton_5 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_5.setObjectName("pushButton_5")
        self.gridLayout.addWidget(self.pushButton_5, 0, 0, 1, 1)
        self.pushButton_10 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_10.setObjectName("pushButton_10")
        self.gridLayout.addWidget(self.pushButton_10, 1, 2, 1, 1)
        self.pushButton_18 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_18.setObjectName("pushButton_18")
        self.gridLayout.addWidget(self.pushButton_18, 3, 3, 1, 1)
        self.pushButton_17 = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_17.setObjectName("pushButton_17")
        self.gridLayout.addWidget(self.pushButton_17, 3, 0, 1, 3)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 621, 26))
        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.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.label.setText(_translate("MainWindow", "姓名"))
        self.pushButton.setText(_translate("MainWindow", "确定"))
        self.label_2.setText(_translate("MainWindow", "姓名"))
        self.pushButton_2.setText(_translate("MainWindow", "确定"))
        self.label_5.setText(_translate("MainWindow", "用户"))
        self.label_6.setText(_translate("MainWindow", "密码"))
        self.pushButton_3.setText(_translate("MainWindow", "确定"))
        self.pushButton_4.setText(_translate("MainWindow", "取消"))
        self.pushButton_11.setText(_translate("MainWindow", "3"))
        self.pushButton_12.setText(_translate("MainWindow", "2"))
        self.pushButton_13.setText(_translate("MainWindow", "1"))
        self.pushButton_9.setText(_translate("MainWindow", "5"))
        self.pushButton_6.setText(_translate("MainWindow", "8"))
        self.pushButton_8.setText(_translate("MainWindow", "6"))
        self.pushButton_7.setText(_translate("MainWindow", "7"))
        self.pushButton_15.setText(_translate("MainWindow", "-"))
        self.pushButton_16.setText(_translate("MainWindow", "*"))
        self.pushButton_14.setText(_translate("MainWindow", "+"))
        self.pushButton_5.setText(_translate("MainWindow", "9"))
        self.pushButton_10.setText(_translate("MainWindow", "4"))
        self.pushButton_18.setText(_translate("MainWindow", "/"))
        self.pushButton_17.setText(_translate("MainWindow", "计算"))

2.使用容器进行布局

?使用容器进行控件布局本质上还是调用布局管理器进行的

3.Qt Designer实战应用

① 绝对布局与布局管理器布局

在使用布局管理器之后，在属性编辑器中看到标签里面的geometry属性变成了灰色不可用，这说明这些标签的位置和大小已经由垂直布局管理器接管，与geometry无关了。

?②控件在布局管理器中的位置管理与控件名字自定义

③布局顺序

将窗口控件拖入窗口中并放置在大致正确的位置上进行布局
对于要用代码引用的窗口控件，应指定一个名字
在适当的地方为内置的信号和槽建立信号和槽的连接
预览窗口，并检查所有的内容能否按照设想进行工作
设置窗口的对象名（在类中会用到这个名字）、窗口的标题并进行保存
编译窗口，生成对话框代码
编写业务逻辑文件

?④测试程序

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

# Form implementation generated from reading ui file 'D:\zw_own\PyQt\Python3\testPyQt5_7\my_pyqt_book\layout_demo_LayoutManage.ui'
#
# Created by: PyQt5 UI code generator 5.5.1
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_LayoutDemo(object):
    def setupUi(self, LayoutDemo):
        LayoutDemo.setObjectName("LayoutDemo")
        LayoutDemo.resize(565, 430)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(3)
        sizePolicy.setVerticalStretch(6)
        sizePolicy.setHeightForWidth(LayoutDemo.sizePolicy().hasHeightForWidth())
        LayoutDemo.setSizePolicy(sizePolicy)
        self.centralwidget = QtWidgets.QWidget(LayoutDemo)
        self.centralwidget.setObjectName("centralwidget")
        self.layoutWidget = QtWidgets.QWidget(self.centralwidget)
        self.layoutWidget.setGeometry(QtCore.QRect(9, 9, 504, 94))
        self.layoutWidget.setObjectName("layoutWidget")
        self.horizontalLayout = QtWidgets.QHBoxLayout(self.layoutWidget)
        self.horizontalLayout.setSizeConstraint(QtWidgets.QLayout.SetDefaultConstraint)
        self.horizontalLayout.setObjectName("horizontalLayout")
        self.verticalLayout = QtWidgets.QVBoxLayout()
        self.verticalLayout.setObjectName("verticalLayout")
        self.label_6 = QtWidgets.QLabel(self.layoutWidget)
        self.label_6.setText("")
        self.label_6.setObjectName("label_6")
        self.verticalLayout.addWidget(self.label_6)
        self.label_3 = QtWidgets.QLabel(self.layoutWidget)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.label_3.sizePolicy().hasHeightForWidth())
        self.label_3.setSizePolicy(sizePolicy)
        self.label_3.setObjectName("label_3")
        self.verticalLayout.addWidget(self.label_3)
        self.label_4 = QtWidgets.QLabel(self.layoutWidget)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.label_4.sizePolicy().hasHeightForWidth())
        self.label_4.setSizePolicy(sizePolicy)
        self.label_4.setObjectName("label_4")
        self.verticalLayout.addWidget(self.label_4)
        self.label_5 = QtWidgets.QLabel(self.layoutWidget)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.label_5.sizePolicy().hasHeightForWidth())
        self.label_5.setSizePolicy(sizePolicy)
        self.label_5.setObjectName("label_5")
        self.verticalLayout.addWidget(self.label_5)
        self.horizontalLayout.addLayout(self.verticalLayout)
        spacerItem = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
        self.horizontalLayout.addItem(spacerItem)
        self.gridLayout = QtWidgets.QGridLayout()
        self.gridLayout.setObjectName("gridLayout")
        self.label = QtWidgets.QLabel(self.layoutWidget)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.label.sizePolicy().hasHeightForWidth())
        self.label.setSizePolicy(sizePolicy)
        self.label.setObjectName("label")
        self.gridLayout.addWidget(self.label, 0, 0, 1, 1)
        self.label_2 = QtWidgets.QLabel(self.layoutWidget)
        self.label_2.setObjectName("label_2")
        self.gridLayout.addWidget(self.label_2, 0, 1, 1, 1)
        self.doubleSpinBox_returns_min = QtWidgets.QDoubleSpinBox(self.layoutWidget)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(1)
        sizePolicy.setHeightForWidth(self.doubleSpinBox_returns_min.sizePolicy().hasHeightForWidth())
        self.doubleSpinBox_returns_min.setSizePolicy(sizePolicy)
        self.doubleSpinBox_returns_min.setMaximum(0.8)
        self.doubleSpinBox_returns_min.setSingleStep(0.01)
        self.doubleSpinBox_returns_min.setObjectName("doubleSpinBox_returns_min")
        self.gridLayout.addWidget(self.doubleSpinBox_returns_min, 1, 0, 1, 1)
        self.doubleSpinBox_returns_max = QtWidgets.QDoubleSpinBox(self.layoutWidget)
        self.doubleSpinBox_returns_max.setObjectName("doubleSpinBox_returns_max")
        self.gridLayout.addWidget(self.doubleSpinBox_returns_max, 1, 1, 1, 1)
        self.doubleSpinBox_maxdrawdown_min = QtWidgets.QDoubleSpinBox(self.layoutWidget)
        self.doubleSpinBox_maxdrawdown_min.setObjectName("doubleSpinBox_maxdrawdown_min")
        self.gridLayout.addWidget(self.doubleSpinBox_maxdrawdown_min, 2, 0, 1, 1)
        self.doubleSpinBox_maxdrawdown_max = QtWidgets.QDoubleSpinBox(self.layoutWidget)
        self.doubleSpinBox_maxdrawdown_max.setObjectName("doubleSpinBox_maxdrawdown_max")
        self.gridLayout.addWidget(self.doubleSpinBox_maxdrawdown_max, 2, 1, 1, 1)
        self.doubleSpinBox_sharp_min = QtWidgets.QDoubleSpinBox(self.layoutWidget)
        self.doubleSpinBox_sharp_min.setObjectName("doubleSpinBox_sharp_min")
        self.gridLayout.addWidget(self.doubleSpinBox_sharp_min, 3, 0, 1, 1)
        self.doubleSpinBox_sharp_max = QtWidgets.QDoubleSpinBox(self.layoutWidget)
        self.doubleSpinBox_sharp_max.setObjectName("doubleSpinBox_sharp_max")
        self.gridLayout.addWidget(self.doubleSpinBox_sharp_max, 3, 1, 1, 1)
        self.horizontalLayout.addLayout(self.gridLayout)
        self.line = QtWidgets.QFrame(self.layoutWidget)
        self.line.setFrameShape(QtWidgets.QFrame.VLine)
        self.line.setFrameShadow(QtWidgets.QFrame.Sunken)
        self.line.setObjectName("line")
        self.horizontalLayout.addWidget(self.line)
        spacerItem1 = QtWidgets.QSpacerItem(200, 20, QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Minimum)
        self.horizontalLayout.addItem(spacerItem1)
        self.pushButton = QtWidgets.QPushButton(self.layoutWidget)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Maximum)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.pushButton.sizePolicy().hasHeightForWidth())
        self.pushButton.setSizePolicy(sizePolicy)
        self.pushButton.setMinimumSize(QtCore.QSize(0, 0))
        self.pushButton.setObjectName("pushButton")
        self.horizontalLayout.addWidget(self.pushButton)
        LayoutDemo.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(LayoutDemo)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 565, 23))
        self.menubar.setObjectName("menubar")
        LayoutDemo.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(LayoutDemo)
        self.statusbar.setObjectName("statusbar")
        LayoutDemo.setStatusBar(self.statusbar)
        self.label_5.setBuddy(self.doubleSpinBox_sharp_min)

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

    def retranslateUi(self, LayoutDemo):
        _translate = QtCore.QCoreApplication.translate
        LayoutDemo.setWindowTitle(_translate("LayoutDemo", "MainWindow"))
        self.label_3.setText(_translate("LayoutDemo", "收益"))
        self.label_4.setText(_translate("LayoutDemo", "最大回撤"))
        self.label_5.setText(_translate("LayoutDemo", "&sharp比"))
        self.label.setText(_translate("LayoutDemo", "最小值"))
        self.label_2.setText(_translate("LayoutDemo", "最大值"))
        self.pushButton.setText(_translate("LayoutDemo", "开始"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    LayoutDemo = QtWidgets.QMainWindow()
    ui = Ui_LayoutDemo()
    ui.setupUi(LayoutDemo)
    LayoutDemo.show()
    sys.exit(app.exec_())

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

"""
Module implementing LayoutDemo.
"""

from PyQt5.QtCore import pyqtSlot
from PyQt5.QtWidgets import QMainWindow, QApplication

from Ui_layout_demo_LayoutManage import Ui_LayoutDemo


class LayoutDemo(QMainWindow, Ui_LayoutDemo):
    """
    Class documentation goes here.
    """
    def __init__(self, parent=None):
        """
        Constructor
        
        @param parent reference to the parent widget
        @type QWidget
        """
        super(LayoutDemo, self).__init__(parent)
        self.setupUi(self)
    
    @pyqtSlot()
    def on_pushButton_clicked(self):
        """
        Slot documentation goes here.
        """
        print('收益_min:',self.doubleSpinBox_returns_min.text())
        print('收益_max:',self.doubleSpinBox_returns_max.text())
        print('最大回撤_min:',self.doubleSpinBox_maxdrawdown_min.text())
        print('最大回撤_max:',self.doubleSpinBox_maxdrawdown_max.text())
        print('sharp比_min:',self.doubleSpinBox_sharp_min.text())
        print('sharp比_max:',self.doubleSpinBox_sharp_max.text())
        print('*****************************************************')


if __name__ == "__main__":
    import sys

    app = QApplication(sys.argv)
    ui = LayoutDemo()
    ui.show()
    sys.exit(app.exec_())