1 官方帮助文档

QTreeWidget Qt5.15帮助文档

2 基本使用

#!/usr/bin/python3
# -*- coding: GBK -*-

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

class QTreeWidgetDemo(QWidget):
    def __init__(self):
        super(QTreeWidgetDemo, self).__init__()
        self.resize(400, 400)
        self.mainlayout = QVBoxLayout(self)
        self.treewidget = QTreeWidget(self)
        self.mainlayout.addWidget(self.treewidget)
        self.setWindowTitle('树控件 QTreeWidget')
        #指定列数 标签头
        self.treewidget.setColumnCount(3)
        self.treewidget.setHeaderLabels(['姓名','年龄','籍贯'])
        #根节点
        self.root = QTreeWidgetItem(self.treewidget)
        self.root.setText(0, '根节点')
        #添加子节点
        self.childitem = QTreeWidgetItem(self.root)
        self.childitem.setText(0,'子节点文字')


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

如下：

#!/usr/bin/python3
# -*- coding: GBK -*-

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

class QTreeWidgetDemo(QWidget):
    def __init__(self):
        super(QTreeWidgetDemo, self).__init__()
        self.resize(400, 400)
        self.mainlayout = QVBoxLayout(self)
        self.treewidget   = QTreeWidget(self)
        self.mainlayout.addWidget(self.treewidget)
        self.setWindowTitle('树控件 QTreeWidget')
        #指定列数 标签头
        self.treewidget.setColumnCount(3)
        self.treewidget.setHeaderLabels(['姓名','年龄','籍贯'])
        #根节点
        self.root = QTreeWidgetItem(self.treewidget)
        self.root.setIcon(0, QIcon(":/questionMark.png"))
        self.root.setIcon(1, QIcon(":/whole.png"))
        self.root.setText(0, '根节点')
        self.root.setText(1, '第一列')
        self.root.setText(2, '第二列')

        topitem1 = QTreeWidgetItem(self.treewidget )
        self.treewidget.addTopLevelItem(topitem1)
        topitem1.setText(0, '#第0列')
        childitem = QTreeWidgetItem(topitem1)
        childitem.setText(0,'childitem0')
        childitem.setText(1,'childitem1')
        #itemClicked(QTreeWidgetItem *item, int column)
        self.treewidget.itemClicked.connect(self.itemclicked)

        topitem2 = QTreeWidgetItem(self.treewidget, ['0','1','2'])


    def itemclicked(self, item, column):
        print("点击", column, item.text(column))

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

如下：

3 模型事件

#!/usr/bin/python3
# -*- coding: GBK -*-

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

from images import *

class QTreeViewDemo(QWidget):
    def __init__(self):
        super(QTreeViewDemo, self).__init__()
        self.resize(400, 400)
        self.mainlayout = QVBoxLayout(self)
        self.treeview   = QTreeView(self)
        self.mainlayout.addWidget(self.treeview)
        self.setWindowTitle('QTreeView')
        self.mode = QStandardItemModel(self)
        self.mode.setHorizontalHeaderLabels(['列'])
        self.treeview.setModel(self.mode)
        #隐藏表头
        self.treeview.setHeaderHidden(True)
        #展开
        self.treeview.expandAll()

        item00 = QStandardItem('第一行')
        item10 = QStandardItem('第二行')
        item20 = QStandardItem('第三行')
        item00.setIcon(QIcon(":/whole.png"))
        item00.setEditable(False)
        item00.setBackground(QBrush(QColor(0,240,0)))

        item10.setIcon(QIcon(":/whole.png"))
        item20.setIcon(QIcon(":/whole.png"))
        self.mode.setItem( 0, 0, item00 )
        self.mode.setItem( 1, 0, item10 )
        self.mode.setItem( 2, 0, item20 )
        #点击信号
        self.treeview.clicked.connect(self.item_clicked)

    def item_clicked(selfself, index):
        print("---",index.row(), index.column() )



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

如下：