Python3.x+Pyqt5实现界面左侧树形导航栏

from PyQt5.QtWidgets import (QMainWindow, QTreeWidget, QTreeWidgetItem, QApplication) from PyQt5.QtGui import QIcon, QPixmap import sys class TreeWidget(QMainWindow): def __init__(self, parent=None): QMainWindow.__init__(self, parent) self.setMinimumHeight(600) self.setMinimumWidth(400) self.setWindowTitle('树形导航') # 创建一个QTreeWidget部件 self.tree = QTreeWidget() # 设置部件的列数为1 self.tree.setColumnCount(1) # 设置头部信息，因为上面设置列数为2，所以要设置两个标识符 # self.tree.setHeaderLabels(['节点名称']) # 设置表头信息：隐藏表头 self.tree.setHeaderHidden(1) # 设置root和root2为self.tree的子树，所以root和root2就是跟节点 root = QTreeWidgetItem(self.tree) root2 = QTreeWidgetItem(self.tree) # 设置root节点的打开/关闭状态下的不同的图片 icon = QIcon() # 节点打开状态 icon.addPixmap(QPixmap("./folder open.png"), QIcon.Normal, QIcon.On) # 节点关闭状态　　 icon.addPixmap(QPixmap("./folder closed.png"), QIcon.Normal, QIcon.Off) root.setIcon(0, icon) # 设置根节点的名称 root.setText(0, '第一节点') root2.setText(0, '第二节点') # 为root节点设置子结点 child1 = QTreeWidgetItem(root) # 设置child1节点的图片 icon2 = QIcon() icon2.addPixmap(QPixmap("./Original Point.png"), QIcon.Normal) child1.setIcon(0, icon2) child1.setText(0, 'child1') # child1.setText(1, 'name1') child2 = QTreeWidgetItem(root) # 设置child2节点的图片 child2.setIcon(0, icon2) child2.setText(0, 'child2') # child2.setText(1, 'name2') child3 = QTreeWidgetItem(root) # 设置child3节点的打开 / 关闭状态下的不同的图片 child3.setIcon(0, icon) child3.setText(0, 'child3') child4 = QTreeWidgetItem(child3) # 设置child4节点的图片 child4.setIcon(0, icon2) child4.setText(0, 'child4') # child4.setText(1, 'name4') # 为root2节点设置子结点 child1 = QTreeWidgetItem(root2) child1.setText(0, 'child1') # child1.setText(1, 'name1') child2 = QTreeWidgetItem(root2) child2.setText(0, 'child2') # child2.setText(1, 'name2') child3 = QTreeWidgetItem(root2) child3.setText(0, 'child3') child4 = QTreeWidgetItem(child3) child4.setText(0, 'child4') # child4.setText(1, 'name4') # self.tree.addTopLevelItem(root) # self.tree.addTopLevelItem(root2) # 将QTreeWidget部件设置为该QMainWindow窗口的核心框架 self.setCentralWidget(self.tree) app = QApplication(sys.argv) # app.aboutToQuit.connect(app.deleteLater) tp = TreeWidget() tp.show() app.exec_()