Python QListWidget 和多选
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QListWidget and Multiple Selection
提问by Jeffrey Jose
I have a regular QListWidgetwith couple of signals and slots hookedup. Everything works as I expect. I can update, retrieve, clear etc.
我有一个经常QListWidget连接的信号和插槽。一切都按我的预期工作。我可以更新，检索，清除等。
But the UI wont support multiple selections.
但是 UI 不支持多选。
How do I 'enable' multiple selections for QListWidget? My limited experience with PyQt tells me I need to create a custom QListWidgetby subclassing .. but what next?
我如何“启用”多项选择QListWidget？我对 PyQt 的有限经验告诉我，我需要QListWidget通过子类化来创建自定义……但是接下来呢？
Google gave me C++ answers but I'm looking for Python
谷歌给了我 C++ 答案，但我正在寻找 Python
http://www.qtforum.org/article/26320/qlistwidget-multiple-selection.html
http://www.qtforum.org/article/26320/qlistwidget-multiple-selection.html
http://www.qtcentre.org/threads/11721-QListWidget-multi-selection
http://www.qtcentre.org/threads/11721-QListWidget-multi-selection
采纳答案by Arnold Spence
Unfortunately I can't help with the Python specific syntax but you don't need to create any subclasses.
不幸的是，我对 Python 特定的语法无能为力，但您不需要创建任何子类。
After your QListWidgetis created, call setSelectionMode()with one of the multiple selection types passed in, probably QAbstractItemView::ExtendedSelectionis the one you want. There are a few variations on this mode that you may want to look at.
您之后QListWidget创建，调用setSelectionMode()与多重选择类型中的一种传递，可能QAbstractItemView::ExtendedSelection是你想要的。您可能需要查看此模式的一些变体。
In your slot for the itemSelectionChanged()signal, call selectedItems()to get a QListof QListWidgetItempointers.
在你的插槽的itemSelectionChanged()信号，打电话selectedItems()得到QList的QListWidgetItem指针。
回答by Jeff M.
For PyQT4 it's
对于 PyQT4，它是
QListWidget.setSelectionMode(QtGui.QAbstractItemView.ExtendedSelection)
回答by Jeff M.
Example of getting multiple selected values in listWidget with multiple selection.
使用多项选择在 listWidget 中获取多个选定值的示例。
from PyQt5 import QtWidgets, QtCore
class Test(QtWidgets.QDialog):
def __init__(self, parent=None):
super(Test, self).__init__(parent)
self.layout = QtWidgets.QVBoxLayout()
self.listWidget = QtWidgets.QListWidget()
self.listWidget.setSelectionMode(
QtWidgets.QAbstractItemView.ExtendedSelection
)
self.listWidget.setGeometry(QtCore.QRect(10, 10, 211, 291))
for i in range(10):
item = QtWidgets.QListWidgetItem("Item %i" % i)
self.listWidget.addItem(item)
self.listWidget.itemClicked.connect(self.printItemText)
self.layout.addWidget(self.listWidget)
self.setLayout(self.layout)
def printItemText(self):
items = self.listWidget.selectedItems()
x = []
for i in range(len(items)):
x.append(str(self.listWidget.selectedItems()[i].text()))
print (x)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
form = Test()
form.show()
app.exec_()
output :-
输出 ：-
