选中/未选中PyQt listView复选框连接
选中/未选中PyQt listView复选框连接
提问于 2018-06-27 04:44:57
我可以通过迭代一个QListView (如解释的here )，了解如何检查是否选中了所有复选框
但是，在检查单个框时，是否有一种连接到函数的方法，它也可能与QListView中当前选定的对象不一样？相当于self.listview.clicked.connect(foo)
最小结合上面的链接示例：
from PyQt5 import QtCore
from PyQt5 import QtGui
from PyQt5.QtCore import QTimer
from PyQt5.QtWidgets import QApplication, QWizardPage, QListView
class AppRemovalPage(QWizardPage):
def __init__( self, parent ):
super(AppRemovalPage, self).__init__(parent)
self.setTitle('Apps to Remove')
self.setSubTitle('Listview')
self.list_view = QListView(self)
self.list_view.setMinimumSize(465, 200)
self.isWritten = False
self.model = QtGui.QStandardItemModel(self.list_view)
for line in ('a', 'b', 'c', 'd', 'e'):
self.item = QtGui.QStandardItem(line)
self.item.setCheckable(True)
self.item.setCheckState(QtCore.Qt.Unchecked)
self.model.appendRow(self.item)
self.list_view.setModel(self.model)
self.list_view.clicked.connect(self.getSelectedListItem)
self.list_view.show()
def print_checked_items(self):
for index in range(self.model.rowCount()):
item = self.model.item(index)
if item.checkState() == QtCore.Qt.Checked:
print(item.text(), "was checked")
print("rerun timed script to list checked objects again")
def getSelectedListItem(self):
"""
Gets the name and row of the selected object.
"""
currentSelection = self.list_view.selectedIndexes()
name = None
row = None
index = None
# Set name for currently selected object in listview
for obj_index in currentSelection:
item = self.model.itemFromIndex(obj_index)
row = item.row()
index = self.model.index(row, 0)
name = self.model.data(index)
self.currName = name
self.currRow = row
self.currIndx = index
print(self.currName)
app = QApplication([])
listview = AppRemovalPage(None)
listview.show()
QTimer.singleShot(5000, listview.print_checked_items)
app.exec_()回答 1
Stack Overflow用户
回答已采纳
发布于 2018-06-27 10:42:42
在这种情况下，我们可以使用委托来检测状态的变化，另一种解决方案是使用模型，但是这将更麻烦于实现，因为每个模型都需要修改。解决方案是下一个
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
class Delegate(QtWidgets.QStyledItemDelegate):
def editorEvent(self, event, model, option, index):
checked = index.data(QtCore.Qt.CheckStateRole)
ret = QtWidgets.QStyledItemDelegate.editorEvent(self, event, model, option, index)
if checked != index.data(QtCore.Qt.CheckStateRole):
self.parent().checked.emit(index)
return ret
class ListView(QtWidgets.QListView):
checked = QtCore.pyqtSignal(QtCore.QModelIndex)
def __init__(self, *args, **kwargs):
super(ListView, self).__init__(*args, **kwargs)
self.setItemDelegate(Delegate(self))
class AppRemovalPage(QtWidgets.QWizardPage):
def __init__( self, parent=None):
super(AppRemovalPage, self).__init__(parent)
self.setTitle('Apps to Remove')
self.setSubTitle('Listview')
self.list_view = ListView(self)
self.list_view.setMinimumSize(465, 200)
self.model = QtGui.QStandardItemModel(self)
for line in ('a', 'b', 'c', 'd', 'e'):
self.item = QtGui.QStandardItem(line)
self.item.setCheckable(True)
self.item.setCheckState(QtCore.Qt.Unchecked)
self.model.appendRow(self.item)
self.list_view.setModel(self.model)
self.list_view.checked.connect(self.onChecked)
@QtCore.pyqtSlot(QtCore.QModelIndex)
def onChecked(self, index):
item = self.model.itemFromIndex(index)
if item.checkState() == QtCore.Qt.Checked:
print(item.text(), "was checked")
else:
print(item.text(), "was unchecked")
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
listview = AppRemovalPage()
listview.show()
sys.exit(app.exec_())页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51063145
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