python 中pyqt5 树节点点击实现多窗口切换问题

# coding=utf-8import sysfrom PyQt5.QtWidgets import *from PyQt5.QtCore import *from PyQt5.QtGui import *class Example(QWidget): def __init__(self):  super().__init__()  self.initUI() def initUI(self):  hbox = QHBoxLayout(self)  left = QFrame(self)  # QFrame 控件添加StyledPanel样式能使QFrame 控件之间的界限更加明显  #left.setFrameShape(QFrame.StyledPanel)  right = QFrame(self)  #right.setFrameShape(QFrame.StyledPanel)  splitter1 = QSplitter(Qt.Horizontal)  splitter1.addWidget(left)  splitter1.setSizes([20,]) #设置分隔条位置  splitter1.addWidget(right)  hbox.addWidget(splitter1)  self.setLayout(hbox)  # 树  self.tree = QTreeWidget(left)  self.tree.setStyleSheet("background-color:#eeeeee;border:outset;color:#215b63;")  self.tree.setAutoScroll(True)  self.tree.setEditTriggers(QAbstractItemView.DoubleClicked | QAbstractItemView.EditKeyPressed)  self.tree.setTextElideMode(Qt.ElideMiddle)  #self.tree.setIndentation(30)  self.tree.setRootIsDecorated(True)  self.tree.setUniformRowHeights(False)  self.tree.setItemsExpandable(True)  self.tree.setAnimated(False)  self.tree.setHeaderHidden(True)  self.tree.setExpandsOnDoubleClick(True)  self.tree.setObjectName("tree")  # 设置根节点  root = QTreeWidgetItem(self.tree)  root.setText(0, '系统管理')  # 设置树形控件的列的宽度  #self.tree.setColumnWidth(0, 150)  # 设置子节点1  child1 = QTreeWidgetItem()  child1.setText(0, '增加人员信息')  root.addChild(child1)  # 设置子节点2  child2 = QTreeWidgetItem(root)  child2.setText(0, '查询人员信息')  # 加载根节点的所有属性与子控件  self.tree.addTopLevelItem(root)  # 设置stackedWidget  self.stackedWidget = QStackedWidget(right)  # 设置第一个面板  self.form1 = QWidget()  self.formLayout1 = QHBoxLayout(self.form1)  self.label1 = QLabel()  self.label1.setText("增加人员信息面板")  self.label1.setSizePolicy(QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding))  self.label1.setAlignment(Qt.AlignCenter)  self.label1.setFont(QFont("Roman times", 50, QFont.Bold))  self.formLayout1.addWidget(self.label1)  # 设置第二个面板  self.form2 = QWidget()  self.formLayout2 = QHBoxLayout(self.form2)  self.label2 = QLabel()  self.label2.setText("查询人员信息面板")  self.label2.setSizePolicy(QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding))  self.label2.setAlignment(Qt.AlignCenter)  self.label2.setFont(QFont("Roman times", 50, QFont.Bold))  self.formLayout2.addWidget(self.label2)  # 将两个面板，加入stackedWidget  self.stackedWidget.addWidget(self.form1)  self.stackedWidget.addWidget(self.form2)  # 树节点监听事件  self.tree.clicked.connect(self.onClicked)  # 窗口最大化  self.showMaximized()  self.setWindowTitle('树窗口分隔案列')  self.show() def onClicked(self,qmodeLindex):  item=self.tree.currentItem()  print('Key=%s,value=%s'%(item.text(0),item.text(1)))  if item.text(0) == '增加人员信息':   self.on_pushButton1_clicked()  elif item.text(0) == '查询人员信息':   self.on_pushButton2_clicked()  else:   print('返回主界面') # 按钮一：打开第一个面板 def on_pushButton1_clicked(self):  self.stackedWidget.setCurrentIndex(0) # 按钮二：打开第二个面板 def on_pushButton2_clicked(self):  self.stackedWidget.setCurrentIndex(1)if __name__ == '__main__': app = QApplication(sys.argv) ex = Example() sys.exit(app.exec_())

import ui_denglu as dlimport ui_zhuche as zcfrom PyQt5.QtWidgets import QApplication,QMainWindow,QDialogimport sysclass parentWindow(QMainWindow): def __init__(self):  QMainWindow.__init__(self)  self.main_ui = dl.Ui_submit_user()  self.main_ui.setupUi(self)class childWindow(QDialog): def __init__(self):  QDialog.__init__(self)  self.child=zc.Ui_MainWindow()  self.child.setupUi(self)if __name__=='__main__': app=QApplication(sys.argv) window=parentWindow() child=childWindow() #通过toolButton将两个窗体关联 btn=window.main_ui.pushButton_new btn.clicked.connect(child.show) # 显示 window.show() sys.exit(app.exec_())