无法让设计师在pyqt5中的QGridLayout内调整Qwidget的大小吗？

Question

我可以运行这段代码：

import sys

from PyQt5.QtWidgets import QApplication, QScrollArea, QWidget, QGridLayout, QVBoxLayout, QLabel


from PyQt5 import QtGui, QtCore

from PyQt5.QtGui import QDrag



class MainWidget(QWidget):
    
    def __init__(self, *args, **kwargs):
        
        super().__init__()
        
        
        
        self.setStyleSheet("border: 1px solid black;") 
        
        
        self.layout = QGridLayout(self)
        
        self.resize(600, 400)
        
        
        # for i in [(0,0) , (0,1) , (1,0) , (1,1)]:
            
        for i in [(0,0)]:
            
            
            
            print(str(i))
            
            wig = QWidget()
            
            wig.resize(150,100)
            
            
            
            
            # VBox = QVBoxLayout()
            
            # VBox.addStretch(1)
            
            
            # VBox.addWidget(label)
            
            # wig.setLayout(VBox)
            
            
            scroll = QScrollArea(wig)
            
            scroll.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)
            

            scrollAreaWidgetContents = QWidget()
            

            # label = QLabel()
            
            # font = self.font()
            
            
            # font.setPointSize(15)
            
            # label.setFont(font)
            
            # label.setText(str(i)+'   ')
            
            # VBox = QVBoxLayout()
            
            # VBox.addWidget(label)
            
            # scrollAreaWidgetContents.setLayout(VBox)
            
            scroll.setWidget(scrollAreaWidgetContents)
            
            
            self.layout.addWidget(scroll, i[0] , i[1])
            
        
        
        self.show()
    
    

if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = MainWidget()
    sys.exit(app.exec_())

并且能够调整我的小部件以及 QGridlayout 中包含的小部件的大小。

使用PyQt-Designer编写我的应用程序（

test003.ui

）时，通过

pyuic5

转换后我得到：

test003.py

：

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(658, 538)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(1)
        sizePolicy.setVerticalStretch(1)
        sizePolicy.setHeightForWidth(Form.sizePolicy().hasHeightForWidth())
        Form.setSizePolicy(sizePolicy)
        Form.setSizeIncrement(QtCore.QSize(1, 1))
        Form.setStyleSheet("QWidget{background-color: yellow\n"
"}")
        self.gridLayoutWidget = QtWidgets.QWidget(Form)
        self.gridLayoutWidget.setGeometry(QtCore.QRect(0, 10, 641, 501))
        self.gridLayoutWidget.setObjectName("gridLayoutWidget")
        self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget)
        self.gridLayout.setSizeConstraint(QtWidgets.QLayout.SetNoConstraint)
        self.gridLayout.setContentsMargins(0, 0, 0, 0)
        self.gridLayout.setObjectName("gridLayout")
        self.scrollArea = QtWidgets.QScrollArea(self.gridLayoutWidget)
        self.scrollArea.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)
        self.scrollArea.setWidgetResizable(True)
        self.scrollArea.setObjectName("scrollArea")
        self.scrollAreaWidgetContents_2 = QtWidgets.QWidget()
        self.scrollAreaWidgetContents_2.setGeometry(QtCore.QRect(0, 0, 614, 495))
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.scrollAreaWidgetContents_2.sizePolicy().hasHeightForWidth())
        self.scrollAreaWidgetContents_2.setSizePolicy(sizePolicy)
        self.scrollAreaWidgetContents_2.setStyleSheet("QWidget{background-color: blue}")
        self.scrollAreaWidgetContents_2.setObjectName("scrollAreaWidgetContents_2")
        self.scrollArea.setWidget(self.scrollAreaWidgetContents_2)
        self.gridLayout.addWidget(self.scrollArea, 0, 0, 1, 1)

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

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

以及主要代码：

import sys

from PyQt5.QtWidgets import QApplication, QScrollArea, QWidget, QGridLayout, QVBoxLayout


from PyQt5 import QtGui

from PyQt5.QtGui import QDrag


# from untitled001 import Ui_Form

# from untitled002 import Ui_Form

# from untitled003b import Ui_Form

# from test001 import Ui_Form # form


# from test002 import Ui_Form #form + grid

from test003 import Ui_Form #form + grid + widget




class MainWidget(QWidget, Ui_Form):
    
    def __init__(self, *args, **kwargs):
        
        super().__init__()
        
        self.setupUi(self)
        
        
        self.show()
        


if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = MainWidget()
    
    # w.show()
    
    sys.exit(app.exec_())

但我得到：

蓝色小部件不与主部件一起调整大小，

我做错了什么？ 无法在 PyQt 设计器中找到任何提示并读出

test003.py

ui

Answer 1

在这里找到答案：pyqt5：无法在窗口调整大小时最大化小部件

引用其中一条评论：

您仅为正在创建的“布局小部件”设置布局，但这些小部件不受父布局管理，而父布局应在中央小部件上设置。右键单击任何其他小部件外部的空白区域，然后从“布局”子菜单中选择适当的布局。 –

这里是我的应用程序的设计器工作解决方案：

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(704, 500)
        Form.setStyleSheet("")
        self.gridLayout = QtWidgets.QGridLayout(Form)
        self.gridLayout.setObjectName("gridLayout")
        self.scrollArea_1 = QtWidgets.QScrollArea(Form)
        self.scrollArea_1.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)
        self.scrollArea_1.setWidgetResizable(True)
        self.scrollArea_1.setObjectName("scrollArea_1")
        self.scrollAreaWidgetContents = QtWidgets.QWidget()
        self.scrollAreaWidgetContents.setGeometry(QtCore.QRect(0, 0, 667, 484))
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.scrollAreaWidgetContents.sizePolicy().hasHeightForWidth())
        self.scrollAreaWidgetContents.setSizePolicy(sizePolicy)
        self.scrollAreaWidgetContents.setStyleSheet("")
        self.scrollAreaWidgetContents.setObjectName("scrollAreaWidgetContents")
        self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.scrollAreaWidgetContents)
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.widget = QtWidgets.QWidget(self.scrollAreaWidgetContents)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.widget.sizePolicy().hasHeightForWidth())
        self.widget.setSizePolicy(sizePolicy)
        self.widget.setStyleSheet("QWidget{border: 3px solid red}\n"
"\n"
"QWidget{background-color: green}")
        self.widget.setObjectName("widget")
        self.horizontalLayout_2.addWidget(self.widget)
        self.scrollArea_1.setWidget(self.scrollAreaWidgetContents)
        self.gridLayout.addWidget(self.scrollArea_1, 1, 1, 1, 1)

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

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

图片：