python - 如何更改标签、行编辑等相对于窗口大小的位置？

Question

我正在创建一个 GUI 应用程序。应用程序中的所有窗口都包含行编辑、按钮等。我希望在使用应用程序时，这些窗口的位置相对于窗口大小进行更改。如果用户最大化或改变窗口大小，这些位置应该改变。

代码如下:

from PyQt5 import QtCore, QtGui, QtWidgets

class MainWindow(object):

    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(1125, 969)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(350, 330, 361, 81))
        font = QtGui.QFont()
        font.setPointSize(24)
        font.setBold(True)
        font.setWeight(75)
        self.label.setFont(font)
        self.label.setObjectName("label")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(470, 510, 75, 51))
        self.pushButton.setObjectName("pushButton")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 1125, 21))
        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", "Window"))
        self.label.setText(_translate("MainWindow", " Manager"))
        self.pushButton.setText(_translate("MainWindow", "Lets Start!"))


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

Answer 1

由于您使用的是 Qt Designer，我将提供使用该工具的解决方案，为此您可以使用以下方案:

QMainWindow
└── QHBoxLayout
    ├── QSpacerItem
    ├── QVBoxLayout
    │   ├── QSpacerItem
    │   ├── QLabel
    │   ├── QPushButton
    │   └── QSpacerItem
    └── QSpacerItem

获取以下.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>424</width>
    <height>179</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <layout class="QHBoxLayout" name="horizontalLayout">
    <item>
     <spacer name="horizontalSpacer">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
      </property>
      <property name="sizeHint" stdset="0">
       <size>
        <width>129</width>
        <height>20</height>
       </size>
      </property>
     </spacer>
    </item>
    <item>
     <layout class="QVBoxLayout" name="verticalLayout">
      <item>
       <spacer name="verticalSpacer">
        <property name="orientation">
         <enum>Qt::Vertical</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
          <width>128</width>
          <height>13</height>
         </size>
        </property>
       </spacer>
      </item>
      <item>
       <widget class="QLabel" name="label">
        <property name="font">
         <font>
          <pointsize>24</pointsize>
          <weight>75</weight>
          <bold>true</bold>
         </font>
        </property>
        <property name="text">
         <string>Manager</string>
        </property>
        <property name="alignment">
         <set>Qt::AlignCenter</set>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QPushButton" name="pushButton">
        <property name="text">
         <string>Lets Start!</string>
        </property>
       </widget>
      </item>
      <item>
       <spacer name="verticalSpacer_2">
        <property name="orientation">
         <enum>Qt::Vertical</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
          <width>128</width>
          <height>13</height>
         </size>
        </property>
       </spacer>
      </item>
     </layout>
    </item>
    <item>
     <spacer name="horizontalSpacer_2">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
      </property>
      <property name="sizeHint" stdset="0">
       <size>
        <width>128</width>
        <height>20</height>
       </size>
      </property>
     </spacer>
    </item>
   </layout>
  </widget>
  <widget class="QMenuBar" name="menubar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>424</width>
     <height>24</height>
    </rect>
   </property>
  </widget>
  <widget class="QStatusBar" name="statusbar"/>
 </widget>
 <resources/>
 <connections/>
</ui>

然后用pyuic将其转换为.py。