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

class DockDemo(QMainWindow):
  def __init__(self,parent=None):
    super(DockDemo, self).__init__(parent)
    #设置水平布局
    layout=QHBoxLayout()
    #实例化菜单栏
    bar=self.menuBar()
    #创建主菜单file，在其中添加子菜单
    file=bar.addMenu('File')
    file.addAction('New')
    file.addAction('Save')
    file.addAction('quit')

    #创建QDockWidget窗口（标题，自身窗口）
    self.items=QDockWidget('Dockable',self)

    #实例化列表窗口，添加几个条目
    self.listWidget=QListWidget()
    self.listWidget.addItem('Item1')
    self.listWidget.addItem('Item2')
    self.listWidget.addItem('Item3')
    self.listWidget.addItem('Item4')

    #在窗口区域设置QWidget，添加列表控件
    self.items.setWidget(self.listWidget)

    #设置dock窗口是否可以浮动，True，运行浮动在外面，自动与主界面脱离，False，默认浮动主窗口内，可以手动脱离
    self.items.setFloating(False)

    #设置QTextEdit为中央小控件
    self.setCentralWidget(QTextEdit())
    #将窗口放置在中央小控件的右侧
    self.addDockWidget(Qt.RightDockWidgetArea,self.items)

    self.setLayout(layout)
    self.setWindowTitle('Dock 例子')
if __name__ == '__main__':
  app=QApplication(sys.argv)
  demo=DockDemo()
  demo.show()
  sys.exit(app.exec_())

import sys
from PyQt5.QtCore import *
from PyQt5.QtWidgets import QMainWindow, QTextEdit, QDockWidget, QPushButton, QApplication


class DockDemo(QMainWindow):
  def __init__(self):
    super().__init__()
    self.docker1=QDockWidget('Docker1', self)
    self.docker2=QDockWidget('Docker2', self)
    self.textEdit=QTextEdit()
    self.setCentralWidget(self.textEdit)
    self.btn1=QPushButton('btn1')
    self.btn2=QPushButton('btn2')
    self.btn1.clicked.connect(self.btn1fun)
    self.btn2.clicked.connect(self.btn2fun)
    self.docker1.setWidget(self.btn1)
    self.docker2.setWidget(self.btn2)
    self.addDockWidget(Qt.RightDockWidgetArea,self.docker1)
    self.addDockWidget(Qt.LeftDockWidgetArea, self.docker2)
    self.setWindowTitle('Dock 例子')
    self.resize(400, 300)
  def btn1fun(self):
    self.textEdit.setText('btn1')
    self.docker2.setFloating(True)#开启悬浮状态
  def btn2fun(self):
    self.textEdit.setText('btn2')
    self.docker1.setFloating(True)
    
if __name__ == '__main__':
  app=QApplication(sys.argv)
  demo=DockDemo()
  demo.show()
  sys.exit(app.exec_())

import sys
from PyQt5.QtCore import *
from PyQt5.QtWidgets import QMainWindow, QTextEdit, QDockWidget, QPushButton, QApplication, QWidget, QVBoxLayout


class docker(QDockWidget):
  def __init__(self, parent):
    super().__init__(parent)
    self.btn1 = QPushButton('btn1')
    self.btn2 = QPushButton('btn2')
    self.vbox = QVBoxLayout()
    self.vbox.addWidget(self.btn1)
    self.vbox.addWidget(self.btn2)
    self.wgt = QWidget()
    self.wgt.setLayout(self.vbox)
    self.setWidget(self.wgt)

class DockDemo(QMainWindow):
  def __init__(self):
    super().__init__()
    self.docker = docker(self)
    self.textEdit = QTextEdit()
    self.setCentralWidget(self.textEdit)
    self.docker.btn1.clicked.connect(self.btn1fun)
    self.docker.btn2.clicked.connect(self.btn2fun)
    self.addDockWidget(Qt.RightDockWidgetArea, self.docker)
    self.setWindowTitle('Dock 例子')
    self.resize(400, 300)

  def btn1fun(self):
    self.textEdit.setText('btn1')

  def btn2fun(self):
    self.textEdit.setText('btn2')


if __name__ == '__main__':
  app = QApplication(sys.argv)
  demo = DockDemo()
  demo.show()
  sys.exit(app.exec_())