关于pyqt：PyQt5 windows间切换

PyQt5 switch between windows

我想根据图块创建菜单。现在我需要 PyQt5 概念，如何将 MainWindow 切换到 Window1/Window2/... 并返回 MainWindow 选项。我唯一实现的就是在顶部打开一个新窗口。我宁愿有单独的窗口，在那里我可以定义不同的功能。

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from PyQt5 import QtGui
from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton
from PyQt5.QtCore import pyqtSlot
import sys

class Window(QMainWindow):
def __init__(self):
super().__init__()
self.title ="App"
self.top = 100
self.left = 100
self.width = 680
self.height = 500
self.InitUI()

def InitUI(self):
self.setWindowTitle(self.title)
self.setGeometry(self.top, self.left, self.width, self.height)

buttonWindow1 = QPushButton('Window1', self)
buttonWindow1.move(100, 100)
buttonWindow1.clicked.connect(self.buttonWindow1_onClick)

buttonWindow2 = QPushButton('Window2', self)
buttonWindow2.move(100, 200)
buttonWindow2.clicked.connect(self.buttonWindow2_onClick)

self.show()

@pyqtSlot()
def buttonWindow1_onClick(self):
self.statusBar().showMessage("Switched to window 1")

@pyqtSlot()
def buttonWindow2_onClick(self):
self.statusBar().showMessage("Switched to window 2")

if __name__ == '__main__':
app=QApplication(sys.argv)
ex=Window()
sys.exit(app.exec_())

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import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *

class Window(QMainWindow):
def __init__(self):
super().__init__()
self.title ="App"
self.top = 100
self.left = 100
self.width = 680
self.height = 500
self.InitUI()

def InitUI(self):
self.setWindowTitle(self.title)
self.setGeometry(self.top, self.left, self.width, self.height)

buttonWindow1 = QPushButton('Window1', self)
buttonWindow1.move(100, 100)
buttonWindow1.clicked.connect(self.buttonWindow1_onClick)
self.lineEdit1 = QLineEdit("Type here what you want to transfer for [Window1].", self)
self.lineEdit1.setGeometry(250, 100, 400, 30)

buttonWindow2 = QPushButton('Window2', self)
buttonWindow2.move(100, 200)
buttonWindow2.clicked.connect(self.buttonWindow2_onClick)
self.lineEdit2 = QLineEdit("Type here what you want to transfer for [Window2].", self)
self.lineEdit2.setGeometry(250, 200, 400, 30)
self.show()

@pyqtSlot()
def buttonWindow1_onClick(self):
self.statusBar().showMessage("Switched to window 1")
self.cams = Window1(self.lineEdit1.text())
self.cams.show()
self.close()

@pyqtSlot()
def buttonWindow2_onClick(self):
self.statusBar().showMessage("Switched to window 2")
self.cams = Window2(self.lineEdit2.text())
self.cams.show()
self.close()

class Window1(QDialog):
def __init__(self, value, parent=None):
super().__init__(parent)
self.setWindowTitle('Window1')
self.setWindowIcon(self.style().standardIcon(QStyle.SP_FileDialogInfoView))

label1 = QLabel(value)
self.button = QPushButton()
self.button.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Expanding)
self.button.setIcon(self.style().standardIcon(QStyle.SP_ArrowLeft))
self.button.setIconSize(QSize(200, 200))

layoutV = QVBoxLayout()
self.pushButton = QPushButton(self)
self.pushButton.setStyleSheet('background-color: rgb(0,0,255); color: #fff')
self.pushButton.setText('Click me!')
self.pushButton.clicked.connect(self.goMainWindow)
layoutV.addWidget(self.pushButton)

layoutH = QHBoxLayout()
layoutH.addWidget(label1)
layoutH.addWidget(self.button)
layoutV.addLayout(layoutH)
self.setLayout(layoutV)

def goMainWindow(self):
self.cams = Window()
self.cams.show()
self.close()

class Window2(QDialog):
def __init__(self, value, parent=None):
super().__init__(parent)
self.setWindowTitle('Window2')
self.setWindowIcon(self.style().standardIcon(QStyle.SP_FileDialogInfoView))

label1 = QLabel(value)
self.button = QPushButton()
self.button.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Expanding)
self.button.setIcon(self.style().standardIcon(QStyle.SP_ArrowLeft))
self.button.setIconSize(QSize(200, 200))

layoutV = QVBoxLayout()
self.pushButton = QPushButton(self)
self.pushButton.setStyleSheet('background-color: rgb(0,0,255); color: #fff')
self.pushButton.setText('Click me!')
self.pushButton.clicked.connect(self.goMainWindow)
layoutV.addWidget(self.pushButton)

layoutH = QHBoxLayout()
layoutH.addWidget(label1)
layoutH.addWidget(self.button)
layoutV.addLayout(layoutH)
self.setLayout(layoutV)

def goMainWindow(self):
self.cams = Window()
self.cams.show()
self.close()

if __name__ == '__main__':
app=QApplication(sys.argv)
ex=Window()
sys.exit(app.exec_())

enter