开发pyqt4树部件

Question

我需要编写一个树？，在pyqt。它看起来像这样：

Clients(this is text) 
    Type A (this is a Clients child and has a checkbox) 
    Type B (this is a Clients child and has a checkbox) 
Vendors(this is text) 
    Mary (this is a Vendors child and has a checkbox) 
    Arnold (this is a Vendors child and has a checkbox) 
Time Period 
    Init(this is a Time Period child, and would be a calendarWidget for date selection) 
    End (this is a Time Period child, and would be a calendarWidget for date selection) 

你会为此推荐什么？ QTreeWidget？ QTreeView? 这将是可点击的项目，我将用它来构建sql查询。
感谢您的阅读。

Answer 1

我建议你使用QTreeWidget而不是QTreeView，因为你的任务很简单。 QTreeView（使用自定义模型，例如QStandardItemModel）适用于困难事件。你的很简单。

import sys 
from PyQt4 import QtCore, QtGui 


class Window(QtGui.QWidget): 

    def __init__(self): 
     QtGui.QWidget.__init__(self) 
     self.treeWidget = QtGui.QTreeWidget() 
     self.treeWidget.setHeaderHidden(True) 
     self.addItems(self.treeWidget.invisibleRootItem()) 
     self.treeWidget.itemChanged.connect (self.handleChanged) 
     layout = QtGui.QVBoxLayout() 
     layout.addWidget(self.treeWidget) 
     self.setLayout(layout) 

    def addItems(self, parent): 
     column = 0 
     clients_item = self.addParent(parent, column, 'Clients', 'data Clients') 
     vendors_item = self.addParent(parent, column, 'Vendors', 'data Vendors') 
     time_period_item = self.addParent(parent, column, 'Time Period', 'data Time Period') 

     self.addChild(clients_item, column, 'Type A', 'data Type A') 
     self.addChild(clients_item, column, 'Type B', 'data Type B') 

     self.addChild(vendors_item, column, 'Mary', 'data Mary') 
     self.addChild(vendors_item, column, 'Arnold', 'data Arnold') 

     self.addChild(time_period_item, column, 'Init', 'data Init') 
     self.addChild(time_period_item, column, 'End', 'data End') 

    def addParent(self, parent, column, title, data): 
     item = QtGui.QTreeWidgetItem(parent, [title]) 
     item.setData(column, QtCore.Qt.UserRole, data) 
     item.setChildIndicatorPolicy(QtGui.QTreeWidgetItem.ShowIndicator) 
     item.setExpanded (True) 
     return item 

    def addChild(self, parent, column, title, data): 
     item = QtGui.QTreeWidgetItem(parent, [title]) 
     item.setData(column, QtCore.Qt.UserRole, data) 
     item.setCheckState (column, QtCore.Qt.Unchecked) 
     return item 

    def handleChanged(self, item, column): 
     if item.checkState(column) == QtCore.Qt.Checked: 
      print "checked", item, item.text(column) 
     if item.checkState(column) == QtCore.Qt.Unchecked: 
      print "unchecked", item, item.text(column) 

if __name__ == "__main__": 

    app = QtGui.QApplication(sys.argv) 
    window = Window() 
    window.show() 
    sys.exit(app.exec_())