从ListWidgetItem PyQt4获取所有数据

Question

Please have a look at the picture. The bottom widget is a list widget. It works like this. When you click on insert button a new QListWidgetItem will be added dynamically in the bottom ListWidget. Now there are three items in the widget. Each item may contain CheckBoxes, ComboBoxes, lineEdit etc..

I need to get all those data from the listWidgetItem. Unfortunately, the listwidgetitem.text() is the only way I can retrieve data from the item. What to do then, to get all these data.

Answer 1

You shouldn't (in general) use QListItemWidget for this, but instead a proper QAbstractItemModel-subclass. With that, you can back your listwidget with whatever data you want, and access that data.

There is a utility-class available already called QStandardItemModel which inherits from QAbstractItemModel, and should get you started fast.

Custom QStandardItemModel with custom data method

Answer 2

You can store multiple pieces of arbitrary data on a QListWidgetItem (indeed, all the Item widgets support this). You need to define a custom role for your data.

Data1Role = QtCore.Qt.UserRole + 1
Data2Role = QtCore.Qt.UserRole + 2

item = QtGui.QListWidgetItem()
item.setData(Data1Role, 'Any data')
item.setData(Data2Role, 42)

print item.data(Data1Role)
# "Any data"

However, this data isn't going to be displayed anywhere on the QListWidgetItem . The only data that is displayed by default is the data set on the QtCore.Qt.DisplayRole (which is what text() and setText() use).

You are probably better off using a QTreeWidget , which supports multiple columns (for the multiple pieces of data) and creating a custom subclass of QTreeWidgetItem . If you want the user to be able to edit the data in the table, you're going to need to create a QItemDelegate as well to create the QLineEdits and QComboBoxes for editing the data.