[Python知识库]PyQt5最全54 树控件之为树节点添加响应事件

PyQt5最全54 树控件之为树节点添加响应事件

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


class TreeEvent(QMainWindow):
    """
    为树节点添加响应事件
    """

    def __init__(self):
        super(TreeEvent, self).__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle('为树节点添加响应事件')
        self.resize(400, 300)

        self.tree = QTreeWidget()
        # 为树控件指定列数
        self.tree.setColumnCount(2)
        self.tree.setHeaderLabels(['Key', 'Value'])

        root = QTreeWidgetItem(self.tree)
        root.setText(0, 'root')
        root.setText(1, '0')

        # 添加子节点1
        child1 = QTreeWidgetItem(root)
        child1.setText(0, 'child1')
        child1.setText(1, '1')

        # 添加子节点2
        child2 = QTreeWidgetItem(root)
        child2.setText(0, 'child2')
        child2.setText(1, '2')
        #
        child3 = QTreeWidgetItem(child2)
        child3.setText(0, 'child3')
        child3.setText(1, '3')
        self.tree.clicked.connect(self.onTreeClicked)

        # 默认展开所有节点
        self.tree.expandAll()

        self.setCentralWidget(self.tree)

    def onTreeClicked(self, index):
        item = self.tree.currentItem()
        print(index.row())
        print('key=%s,value=%s' % (item.text(0), item.text(1)))


if __name__ == '__main__':
    app = QApplication(sys.argv)
    main = TreeEvent()
    print(main.__doc__)
    main.show()
    sys.exit(app.exec_())

结果

单击以后在控制台打印结果

    为树节点添加响应事件
    
0
key=child1,value=1
1
key=child2,value=2
0
key=child3,value=3