我正在尝试自动检查QTreeView中的节点(例如,当用户加载某些数据时)。手动复选框滴答功能正常。我按照http://rowinggolfer.blogspot.com.au/2010/05/qtreeview-and-qabractitemmodel-example.html搜索树中的相关项目,即:
在模型中:
x.diff().dropna()
然后我将相关节点传递给模型以设置其检查状态,例如
def searchModel(self, person):
def searchNode(node):
for child in node.childItems:
if person == child.person:
index = self.createIndex(child.row(), 0, child)
return index
if child.childCount() > 0:
result = searchNode(child)
if result:
return result
node_index = searchNode(self.parents[0])
return node_index
def find_GivenName(self, fname):
app = None
for person in self.people:
if person.fname == fname:
app = person
break
if app != None:
index = self.searchModel(app)
return (True, index)
return (False, None)
在模型中:
model.setData(node_index, 2, QtCore.Qt.CheckStateRole)
但是没有检查相关节点的复选框。有什么想法吗?
答案 0 :(得分:0)
正在检查复选框,但仅当鼠标移动到悬停在相关节点上时。根据pyqt文档 - '重新实现setData()函数时,必须明确发出dataChanged()信号' http://pyqt.sourceforge.net/Docs/PyQt4/qabstractitemmodel.html#dataChanged。我将模型中的setData方法更改为:
def setData(self, index, value, role):
if role == Qt.CheckStateRole:
row = index.row()
self.args[row].checked = value
self.dataChanged.emit(index, index)
return True
这里有一些关于dataChanged()信号的好信息:When to emit dataChanged from a QAbstractItemModel