我在尝试从QListView正确删除多个选定行时遇到问题。它可以正确地选择从上到下的项目,但当您从下到上选择多行时,它会在视图中保留一个选定的行。在
如何修复此问题,以用户选择的任何顺序正确删除所有选定的行?在
示例:
按此顺序选择行将给出无效的解决方案: 5级、3级、2级
仅删除级别2
更改为for items in self.listView.selectedIndexes():
与无法从上到下进行选择的情况相反。在
from PyQt5 import QtCore, QtGui, QtWidgets
import sys,functools
class Window(QtWidgets.QMainWindow):
def __init__(self, parent = None):
super(Window,self).__init__(parent)
self.setCentralWidget(QtWidgets.QWidget(self))
self.setWindowTitle('GUI')
mainlayout = QtWidgets.QVBoxLayout()
#Information for widgets
self.items = {'Level1':1,'Level2':2,'Level3':3,'Level4':4,'Level5':5,'Level6':6}
#LineEdit1
self.button = QtWidgets.QPushButton()
self.button.setText('Remove Selected Items')
firstBox = QtWidgets.QHBoxLayout()
firstBox.addWidget(self.button)
#ListView
self.listView = QtWidgets.QListView()
self.listView.setSelectionMode(QtWidgets.QAbstractItemView.MultiSelection)
secondBox = QtWidgets.QVBoxLayout()
secondBox.addWidget(self.listView)
#Add Layouts
mainlayout.addLayout(firstBox)
mainlayout.addLayout(secondBox)
self.centralWidget().setLayout(mainlayout)
#Model
self.model = QtGui.QStandardItemModel()
self.listView.setModel(self.model)
self.button.clicked.connect(functools.partial(self.selecteditems,self.model))
self.fillModel(self.model)
def fillModel(self,model):
for level in self.items:
item = QtGui.QStandardItem(str(level))
model.appendRow(item)
def selecteditems(self,model):
if len(self.listView.selectedIndexes()) > 1:
for items in reversed(self.listView.selectedIndexes()):
model.takeRow(items.row()) #works correctly selecting items from top to bottom, but doesn't work when selecting bottom to top
def main():
app = QtWidgets.QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
也可以只使用
reversed
和sorted
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