PyQt QAbstractTableModel复选框不可检查 [英] PyQt QAbstractTableModel checkbox not checkable
问题描述
我正在将自己的表模型与QAbstractTableModel配合使用,其中我首先使用了复选框(可检查原因标志Qt.ItemIsUserCheckable | Qt.ItemIsSelectable | Qt.ItemIsEnabled
).我在尝试使用复选框时遇到麻烦,因为它们不可检查(无法选中或取消选中他们)在显示的表格中.
I am using own table model with QAbstractTableModel, where I have first col with checkbox (checkable cause flags Qt.ItemIsUserCheckable | Qt.ItemIsSelectable | Qt.ItemIsEnabled
). I have trouble when I am trying use checkboxes, cause they are not checkable (can not make check or uncheck in them) in showed table.
我做错了什么?我在自己的表模型类中使用此方法:
What am I doing wrong? I am using this methods in own table model class:
def data(self, index, role):
row = index.row()
col = index.column()
if role == Qt.DisplayRole:
return '{0}'.format(self.tableData[row][col])
if role == Qt.CheckStateRole:
if col == 0:
return Qt.Unchecked
else:
return None
def setData(self, index, value, role):
if not index.isValid():
return False
if (role == Qt.CheckStateRole):
if (index.data(Qt.CheckStateRole) == Qt.Checked):
return True
else:
return False
else:
return False
推荐答案
您必须为其存储状态,我们需要有一个永久性的引用作为参考,为此我们使用QPersistentModelIndex
,在这种情况下为字典,其中密钥是QPersistentModelIndex
,值是QCheckBox
的状态.
You have to store the states for it, we need to have something permanent as a reference, for this we use QPersistentModelIndex
, in this case a dictionary where the key is the QPersistentModelIndex
and the value is the state of QCheckBox
.
from PyQt4.QtGui import *
from PyQt4.QtCore import *
class TableModel(QAbstractTableModel):
def __init__(self, parent=None):
super(TableModel, self).__init__(parent)
self.tableData = [[1, 2, 3], [1, 2, 3], [1, 2, 3]]
self.checks = {}
def columnCount(self, *args):
return 3
def rowCount(self, *args):
return 3
def checkState(self, index):
if index in self.checks.keys():
return self.checks[index]
else:
return Qt.Unchecked
def data(self, index, role=Qt.DisplayRole):
row = index.row()
col = index.column()
if role == Qt.DisplayRole:
return '{0}'.format(self.tableData[row][col])
elif role == Qt.CheckStateRole and col == 0:
return self.checkState(QPersistentModelIndex(index))
return None
def setData(self, index, value, role=Qt.EditRole):
if not index.isValid():
return False
if role == Qt.CheckStateRole:
self.checks[QPersistentModelIndex(index)] = value
return True
return False
def flags(self, index):
fl = QAbstractTableModel.flags(self, index)
if index.column() == 0:
fl |= Qt.ItemIsEditable | Qt.ItemIsUserCheckable
return fl
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
view = QTableView()
model = TableModel()
view.setModel(model)
view.show()
sys.exit(app.exec_())
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