摘要：
QTreeWidget基本用法'''树控件（QTreeWidget）的基本用法'''importsysfromPyQt5.QtWidgetsimport*fromPyQt5.QtGuiimportQIcon,QBrush,QColorfromPyQt5.QtCoreimportQtclassBasicTreeWidget(QMainWindow):def__init__(self,parent=N
QTreeWidget基本用法
'''
树控件（QTreeWidget）的基本用法
'''
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import QIcon, QBrush, QColor
from PyQt5.QtCore import Qt
class BasicTreeWidget(QMainWindow):
def __init__(self, parent=None):
super(BasicTreeWidget, self).__init__(parent)
self.setWindowTitle('树控件（QTreeWidget）的基本用法')
self.tree = QTreeWidget()
# 为树控件指定列数
self.tree.setColumnCount(2)
# 指定列标签
self.tree.setHeaderLabels(['Key','Value'])
root = QTreeWidgetItem(self.tree)
root.setText(0,'根节点')
root.setIcon(0,QIcon('./images/root.png'))
self.tree.setColumnWidth(0,160)
# 添加子节点1
child1 = QTreeWidgetItem(root)
child1.setText(0,'子节点1')
child1.setText(1,'子节点1的数据')
child1.setIcon(0,QIcon('./images/bao3.png'))
child1.setCheckState(0,Qt.Checked)
# 添加子节点2
child2 = QTreeWidgetItem(root)
child2.setText(0,'子节点2')
child2.setIcon(0,QIcon('./images/bao6.png'))
# 为child2添加一个子节点
child3 = QTreeWidgetItem(child2)
child3.setText(0,'子节点2-1')
child3.setText(1,'新的值')
child3.setIcon(0,QIcon('./images/music.png'))
self.tree.expandAll()
self.setCentralWidget(self.tree)
if __name__ == '__main__':
app = QApplication(sys.argv)
tree = BasicTreeWidget()
tree.show()
sys.exit(app.exec_())
QTreeWidget树节点添加事件
'''
为树节点添加响应事件
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import sys
class TreeEvent(QMainWindow):
def __init__(self, parent=None):
super(TreeEvent, self).__init__(parent)
self.setWindowTitle('为树节点添加响应事件')
self.tree = QTreeWidget()
self.tree.setColumnCount(2)
self.tree.setHeaderLabels(['Key','Value'])
root = QTreeWidgetItem(self.tree)
root.setText(0,'root')
root.setText(1, '0')
child1 = QTreeWidgetItem(root)
child1.setText(0,'child1')
child1.setText(1,'1')
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)
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)
tree = TreeEvent()
tree.show()
sys.exit(app.exec_())
QTreeWidget添加节点、编辑节点、删除节点
'''
添加、修改和删除树控件中的节点
'''
import sys
from PyQt5.QtWidgets import *
class ModifyTree(QWidget):
def __init__(self, parent=None):
super(ModifyTree, self).__init__(parent)
self.setWindowTitle('TreeWidget 例子')
operatorLayout = QHBoxLayout()
addBtn = QPushButton('添加节点')
updateBtn = QPushButton('修改节点')
deleteBtn = QPushButton('删除节点')
operatorLayout.addWidget(addBtn)
operatorLayout.addWidget(updateBtn)
operatorLayout.addWidget(deleteBtn)
addBtn.clicked.connect(self.addNode)
updateBtn.clicked.connect(self.updateNode)
deleteBtn.clicked.connect(self.deleteNode)
self.tree = QTreeWidget()
self.tree.setColumnCount(2)
self.tree.setHeaderLabels(['Key','Value'])
root = QTreeWidgetItem(self.tree)
root.setText(0,'root')
root.setText(1, '0')
child1 = QTreeWidgetItem(root)
child1.setText(0,'child1')
child1.setText(1,'1')
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)
mainLayout = QVBoxLayout(self)
mainLayout.addLayout(operatorLayout)
mainLayout.addWidget(self.tree)
self.setLayout(mainLayout)
def onTreeClicked(self,index):
item = self.tree.currentItem()
print(index.row())
print('key=%s,value=%s' % (item.text(0),item.text(1)))
# 添加节点
def addNode(self):
print('添加节点')
item = self.tree.currentItem()
print(item)
node = QTreeWidgetItem(item)
node.setText(0,'新节点')
node.setText(1,'新值')
def updateNode(self):
print('修改节点')
item = self.tree.currentItem()
item.setText(0,'修改节点')
item.setText(1, '值已经被修改')
def deleteNode(self):
print('删除节点')
item = self.tree.currentItem()
root = self.tree.invisibleRootItem()
for item in self.tree.selectedItems():
(item.parent() or root).removeChild(item)
if __name__ == '__main__':
app = QApplication(sys.argv)
tree = ModifyTree()
tree.show()
sys.exit(app.exec_())
QTreeView
'''
QTreeView与系统定制模式
QTreeWidget
Model
QDirModel
'''
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
if __name__=="__main__":
app=QApplication(sys.argv)
model=QDirModel()
tree=QTreeView()
tree.setModel(model)
tree.setWindowTitle("QtreeView")
tree.resize(600,400)
tree.show()
sys.exit(app.exec())
