PyQt5-基本控件｜ 主窗口的类型、创建以及代码如何实现？

PyQt5\QtWidgets\QMainWindow.py

    def addToolBar(self, *__args): # real signature unknown; restored from __doc__ with multiple overloads
        """
        addToolBar(self, Qt.ToolBarArea, QToolBar)
        addToolBar(self, QToolBar)
        addToolBar(self, str) -> QToolBar
        """
        return QToolBar

    def centralWidget(self): # real signature unknown; restored from __doc__
        """ centralWidget(self) -> QWidget """
        return QWidget

    def menuBar(self): # real signature unknown; restored from __doc__
        """ menuBar(self) -> QMenuBar """
        return QMenuBar

    def setCentralWidget(self, QWidget): # real signature unknown; restored from __doc__
        """ setCentralWidget(self, QWidget) """
        pass

    def setStatusBar(self, QStatusBar): # real signature unknown; restored from __doc__
        """ setStatusBar(self, QStatusBar) """
        pass

    def statusBar(self): # real signature unknown; restored from __doc__
        """ statusBar(self) -> QStatusBar """
        return QStatusBar

# -*- coding:utf-8 -*-
# 作者：虫无涯
# 日期：2023/10/19 
# 文件名称：test017_FirstMainWin.py
# 作用：QMainWindow应用
# 联系：VX(NoamaNelson)
# 博客：https://blog.csdn.net/NoamaNelson

import sys

from PyQt5.QtWidgets import QApplication, QMainWindow

if __name__ == "__main__":
    app = QApplication(sys.argv)
    win = QMainWindow()
    win.show()
    sys.exit(app.exec_())

# -*- coding:utf-8 -*-
# 作者：虫无涯
# 日期：2023/10/19 
# 文件名称：test018_FirstMainWin.py
# 作用：QMainWindow应用
# 联系：VX(NoamaNelson)
# 博客：https://blog.csdn.net/NoamaNelson

import sys

from PyQt5.QtWidgets import QApplication, QMainWindow


class FirstMainWin(QMainWindow):
    def __init__(self):
        super().__init__()

        self.setWindowTitle("标准窗口")
        self.resize(500, 400)
        self.info = self.statusBar()
        self.info.showMessage("这是一个标准窗口的写法", 6000)


if __name__ == "__main__":
    app = QApplication(sys.argv)
    win = FirstMainWin()
    win.show()
    sys.exit(app.exec_())

# -*- coding:utf-8 -*-
# 作者：虫无涯
# 日期：2023/10/19 
# 文件名称：test018_FirstQwidget.py
# 作用：QMainWindow应用
# 联系：VX(NoamaNelson)
# 博客：https://blog.csdn.net/NoamaNelson

import sys

from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QToolTip


class FirstQwidget():
    def __init__(self):
        super().__init__()
        self.win = QWidget()

    def s(self):
        self.btn = QPushButton(self.win)
        self.btn.setText("按钮")
        self.btn.move(30, 30)

        self.win.resize(300, 300)
        self.win.move(230, 300)
        self.win.setWindowTitle("这是一个QWidget")

        self.win.show()


if __name__ == "__main__":
    app = QApplication(sys.argv)
    w = FirstQwidget()
    w.s()
    sys.exit(app.exec_())

# -*- coding:utf-8 -*-
# 作者：虫无涯
# 日期：2023/10/19 
# 文件名称：test020_FirstQwidget.py
# 作用：QMainWindow应用
# 联系：VX(NoamaNelson)
# 博客：https://blog.csdn.net/NoamaNelson

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton, QDialog
from PyQt5.QtCore import Qt


class DialogWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle('这是Dialog')
        self.resize(400, 400)

        self.btn = QPushButton(self)
        self.btn.setText('这是一个对话框')
        self.btn.move(50, 50)
        self.btn.resize(200, 30)
        self.btn.clicked.connect(self.showDialog)

        self.show()

    def showDialog(self):
        dialog = QDialog()
        btn = QPushButton('ok', dialog)
        dialog.setWindowTitle('Dialog弹窗')
        btn.move(70, 60)
        btn.clicked.connect(QMainWindow.close)
        dialog.setWindowModality(Qt.ApplicationModal)
        dialog.exec_()

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