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add window size setting
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‎README.md

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# PyQt5基础教程(持续更新中。。。)
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* p33_窗口大小设置 [源码下载](p33_窗口大小设置) [博文地址](https://xugaoxiang.com/2022/10/06/pyqt5-33-window-size-setting/)
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* p32_主题美化之`qt-material` [源码下载](p32_主题美化qtmaterial) [博文地址](https://xugaoxiang.com/2022/09/23/pyqt5-32-qt-material/)
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* p31_滑动条 [源码下载](p31_滑动条) [博文地址](https://xugaoxiang.com/2022/09/15/pyqt5-31-qslider/)

‎p33_窗口大小设置/main.py

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import sys
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from PyQt5.QtWidgets import QMainWindow, QApplication, QPushButton
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from ui import Ui_MainWindow
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class MainWindow(QMainWindow, Ui_MainWindow):
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def __init__(self, parent=None):
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super(MainWindow, self).__init__(parent)
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self.setupUi(self)
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self.pushButton_min.clicked.connect(self.do_min)
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self.pushButton_max.clicked.connect(self.do_max)
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self.pushButton_normal.clicked.connect(self.do_normal)
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self.pushButton_fullscreen.clicked.connect(self.do_fullscreen)
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def do_min(self):
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self.showMinimized()
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def do_max(self):
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self.showMaximized()
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def do_normal(self):
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self.showNormal()
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def do_fullscreen(self):
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self.showFullScreen()
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if __name__ == '__main__':
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app = QApplication(sys.argv)
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windows = MainWindow()
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windows.show()
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sys.exit(app.exec_())

‎p33_窗口大小设置/project.ui

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<?xml version="1.0" encoding="UTF-8"?>
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<ui version="4.0">
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<class>MainWindow</class>
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<widget class="QMainWindow" name="MainWindow">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>800</width>
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<height>600</height>
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</rect>
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</property>
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<property name="windowTitle">
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<string>窗口大小设置示例</string>
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</property>
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<widget class="QWidget" name="centralwidget">
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<layout class="QGridLayout" name="gridLayout">
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<item row="0" column="0">
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<layout class="QVBoxLayout" name="verticalLayout">
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<property name="spacing">
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<number>50</number>
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</property>
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<property name="sizeConstraint">
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<enum>QLayout::SetDefaultConstraint</enum>
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</property>
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<property name="leftMargin">
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<number>300</number>
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</property>
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<property name="topMargin">
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<number>50</number>
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</property>
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<property name="rightMargin">
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<number>300</number>
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</property>
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<property name="bottomMargin">
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<number>50</number>
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</property>
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<item>
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<widget class="QPushButton" name="pushButton_min">
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<property name="sizePolicy">
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<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
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<horstretch>0</horstretch>
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<verstretch>0</verstretch>
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</sizepolicy>
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</property>
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<property name="font">
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<font>
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<pointsize>20</pointsize>
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</font>
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</property>
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<property name="text">
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<string>窗口最小化</string>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QPushButton" name="pushButton_max">
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<property name="sizePolicy">
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<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
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<horstretch>0</horstretch>
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<verstretch>0</verstretch>
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</sizepolicy>
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</property>
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<property name="font">
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<font>
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<pointsize>20</pointsize>
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</font>
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</property>
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<property name="text">
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<string>窗口最大化</string>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QPushButton" name="pushButton_normal">
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<property name="sizePolicy">
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<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
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<horstretch>0</horstretch>
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<verstretch>0</verstretch>
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</sizepolicy>
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</property>
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<property name="font">
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<font>
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<pointsize>20</pointsize>
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</font>
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</property>
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<property name="text">
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<string>窗口初始大小</string>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QPushButton" name="pushButton_fullscreen">
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<property name="sizePolicy">
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<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
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<horstretch>0</horstretch>
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<verstretch>0</verstretch>
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</sizepolicy>
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</property>
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<property name="font">
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<font>
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<pointsize>20</pointsize>
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</font>
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</property>
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<property name="text">
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<string>窗口全屏</string>
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</property>
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</widget>
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</item>
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</layout>
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</item>
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</layout>
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</widget>
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<widget class="QMenuBar" name="menubar">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>800</width>
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<height>26</height>
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</rect>
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</property>
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</widget>
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<widget class="QStatusBar" name="statusbar"/>
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</widget>
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<resources/>
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<connections/>
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</ui>

‎p33_窗口大小设置/ui.py

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# -*- coding: utf-8 -*-
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# Form implementation generated from reading ui file '.\project.ui'
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#
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# Created by: PyQt5 UI code generator 5.9.2
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#
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# WARNING! All changes made in this file will be lost!
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from PyQt5 import QtCore, QtGui, QtWidgets
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class Ui_MainWindow(object):
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def setupUi(self, MainWindow):
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MainWindow.setObjectName("MainWindow")
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MainWindow.resize(800, 600)
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self.centralwidget = QtWidgets.QWidget(MainWindow)
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self.centralwidget.setObjectName("centralwidget")
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self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
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self.gridLayout.setObjectName("gridLayout")
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self.verticalLayout = QtWidgets.QVBoxLayout()
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self.verticalLayout.setSizeConstraint(QtWidgets.QLayout.SetDefaultConstraint)
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self.verticalLayout.setContentsMargins(300, 50, 300, 50)
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self.verticalLayout.setSpacing(50)
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self.verticalLayout.setObjectName("verticalLayout")
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self.pushButton_min = QtWidgets.QPushButton(self.centralwidget)
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sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
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sizePolicy.setHorizontalStretch(0)
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sizePolicy.setVerticalStretch(0)
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sizePolicy.setHeightForWidth(self.pushButton_min.sizePolicy().hasHeightForWidth())
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self.pushButton_min.setSizePolicy(sizePolicy)
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font = QtGui.QFont()
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font.setPointSize(20)
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self.pushButton_min.setFont(font)
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self.pushButton_min.setObjectName("pushButton_min")
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self.verticalLayout.addWidget(self.pushButton_min)
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self.pushButton_max = QtWidgets.QPushButton(self.centralwidget)
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sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
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sizePolicy.setHorizontalStretch(0)
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sizePolicy.setVerticalStretch(0)
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sizePolicy.setHeightForWidth(self.pushButton_max.sizePolicy().hasHeightForWidth())
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self.pushButton_max.setSizePolicy(sizePolicy)
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font = QtGui.QFont()
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font.setPointSize(20)
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self.pushButton_max.setFont(font)
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self.pushButton_max.setObjectName("pushButton_max")
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self.verticalLayout.addWidget(self.pushButton_max)
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self.pushButton_normal = QtWidgets.QPushButton(self.centralwidget)
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sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
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sizePolicy.setHorizontalStretch(0)
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sizePolicy.setVerticalStretch(0)
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sizePolicy.setHeightForWidth(self.pushButton_normal.sizePolicy().hasHeightForWidth())
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self.pushButton_normal.setSizePolicy(sizePolicy)
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font = QtGui.QFont()
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font.setPointSize(20)
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self.pushButton_normal.setFont(font)
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self.pushButton_normal.setObjectName("pushButton_normal")
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self.verticalLayout.addWidget(self.pushButton_normal)
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self.pushButton_fullscreen = QtWidgets.QPushButton(self.centralwidget)
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sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
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sizePolicy.setHorizontalStretch(0)
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sizePolicy.setVerticalStretch(0)
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sizePolicy.setHeightForWidth(self.pushButton_fullscreen.sizePolicy().hasHeightForWidth())
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self.pushButton_fullscreen.setSizePolicy(sizePolicy)
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font = QtGui.QFont()
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font.setPointSize(20)
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self.pushButton_fullscreen.setFont(font)
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self.pushButton_fullscreen.setObjectName("pushButton_fullscreen")
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self.verticalLayout.addWidget(self.pushButton_fullscreen)
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self.gridLayout.addLayout(self.verticalLayout, 0, 0, 1, 1)
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MainWindow.setCentralWidget(self.centralwidget)
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self.menubar = QtWidgets.QMenuBar(MainWindow)
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self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26))
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self.menubar.setObjectName("menubar")
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MainWindow.setMenuBar(self.menubar)
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self.statusbar = QtWidgets.QStatusBar(MainWindow)
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self.statusbar.setObjectName("statusbar")
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MainWindow.setStatusBar(self.statusbar)
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self.retranslateUi(MainWindow)
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QtCore.QMetaObject.connectSlotsByName(MainWindow)
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def retranslateUi(self, MainWindow):
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_translate = QtCore.QCoreApplication.translate
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MainWindow.setWindowTitle(_translate("MainWindow", "窗口大小设置示例"))
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self.pushButton_min.setText(_translate("MainWindow", "窗口最小化"))
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self.pushButton_max.setText(_translate("MainWindow", "窗口最大化"))
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self.pushButton_normal.setText(_translate("MainWindow", "窗口初始大小"))
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self.pushButton_fullscreen.setText(_translate("MainWindow", "窗口全屏"))
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