继承 QtDesigner UI(采用gridlayout)后布局变了,求解?

PyQt5继承类窗口与QtDesigner窗口不一致, 未设置Gridlayout前是OK的,不知道是哪里的问题?

QtDesigner 编辑的窗口和代码

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(708, 458)
self.verticalLayout_2 = QtWidgets.QVBoxLayout(Form)
self.verticalLayout_2.setObjectName("verticalLayout_2")
self.gridLayout_2 = QtWidgets.QGridLayout()
self.gridLayout_2.setObjectName("gridLayout_2")
self.label = QtWidgets.QLabel(Form)
self.label.setObjectName("label")
self.gridLayout_2.addWidget(self.label, 0, 0, 1, 1)
self.lineEdit = QtWidgets.QLineEdit(Form)
self.lineEdit.setObjectName("lineEdit")
self.gridLayout_2.addWidget(self.lineEdit, 0, 1, 1, 3)
self.pushButton = QtWidgets.QPushButton(Form)
self.pushButton.setObjectName("pushButton")
self.gridLayout_2.addWidget(self.pushButton, 0, 4, 1, 1)
self.label_2 = QtWidgets.QLabel(Form)
self.label_2.setObjectName("label_2")
self.gridLayout_2.addWidget(self.label_2, 1, 0, 1, 1)
self.comboBox = QtWidgets.QComboBox(Form)
self.comboBox.setObjectName("comboBox")
self.gridLayout_2.addWidget(self.comboBox, 1, 1, 1, 1)
self.label_4 = QtWidgets.QLabel(Form)
self.label_4.setObjectName("label_4")
self.gridLayout_2.addWidget(self.label_4, 1, 2, 1, 1)
self.lineEdit_2 = QtWidgets.QLineEdit(Form)
self.lineEdit_2.setObjectName("lineEdit_2")
self.gridLayout_2.addWidget(self.lineEdit_2, 1, 3, 1, 1)
self.pushButton_2 = QtWidgets.QPushButton(Form)
self.pushButton_2.setObjectName("pushButton_2")
self.gridLayout_2.addWidget(self.pushButton_2, 1, 4, 1, 1)
self.verticalLayout_2.addLayout(self.gridLayout_2)
self.verticalLayout = QtWidgets.QVBoxLayout()
self.verticalLayout.setObjectName("verticalLayout")
self.label_3 = QtWidgets.QLabel(Form)
self.label_3.setObjectName("label_3")
self.verticalLayout.addWidget(self.label_3)
self.tableView = QtWidgets.QTableView(Form)
self.tableView.setObjectName("tableView")
self.verticalLayout.addWidget(self.tableView)
self.verticalLayout_2.addLayout(self.verticalLayout)

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

def retranslateUi(self, Form):
    _translate = QtCore.QCoreApplication.translate
    Form.setWindowTitle(_translate("Form", "项目信息检索"))
    self.label.setText(_translate("Form", "文件路径"))
    self.pushButton.setText(_translate("Form", "选择"))
    self.label_2.setText(_translate("Form", "检索Item"))
    self.label_4.setText(_translate("Form", "检索内容"))
    self.pushButton_2.setText(_translate("Form", "开始"))
    self.label_3.setText(_translate("Form", "检索结果"))

if name == "__main__":
import sys
app=QtWidgets.QApplication(sys.argv)
widget=QtWidgets.QWidget()
ui=Ui_Form()
ui.setupUi(widget)
widget.show()
sys.exit(app.exec_())

---

继承类窗口代码

import sys
from PyQt5.QtWidgets import QMainWindow, QApplication
from PyQt5 import QtCore, QtGui,QtWidgets
from CatchProjectInfo1 import Ui_Form

class MainWindow(QMainWindow, Ui_Form):
"""
Class documentation goes here.
"""

def __init__(self, parent=None):
    super(MainWindow, self).__init__(parent)
    self.setupUi(self)
    self.comboBox.clear()  # 清空items
    self.comboBox.addItem('请选择')

if name == "__main__":
app = QtWidgets.QApplication(sys.argv)
main = QtWidgets.QMainWindow()

content = MainWindow()

content.setupUi(main)

main.show()

sys.exit(app.exec_())

不知道你这个问题是否已经解决, 如果还没有解决的话:

• 给你找了一篇非常好的博客，你可以看看是否有帮助，链接：Qt文档阅读笔记-GridLayout QML Type解析与实例

如果你已经解决了该问题, 非常希望你能够分享一下解决方案, 写成博客, 将相关链接放在评论区, 以帮助更多的人 ^-^