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Twiss
Asked:2020-01-02 06:39:01 +0000 UTC2020-01-02 06:39:01 +0000 UTC

QListWidget 更改不正确

  • 772

我不知道为什么它没有改变，QListWidget尽管它在控制台中显示listwidget这条线已经改变了。怎么修

import sys
from PyQt5 import QtCore
from PyQt5 import QtWidgets
from PyQt5 import QtGui
from PyQt5 import QtCore

class MainWindwos(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()
        self.asd = Click()
        self.setFont(QtGui.QFont('Times', 13))
        self.setFixedSize(400, 600)
        self.listwidget = QtWidgets.QListWidget(self)
        self.listwidget.resize(400, 600)
        self.listwidget.addItem('привет')
        self.listwidget.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
        self.listwidget.customContextMenuRequested.connect(self.asd.edit_item)

class Click:
    def edit_item(self, item):
        self.main = MainWindwos()
        g = self.main.listwidget.itemAt(item)
        self.dialog = QtWidgets.QDialog()
        self.dialog.setFont(QtGui.QFont('Times', 13))
        self.edit = QtWidgets.QLineEdit(self.dialog)
        self.edit.resize(200, 30)
        self.push = QtWidgets.QPushButton(self.dialog)
        self.push.setText('сохранить')
        self.push.move(0, 50)
        self.push.clicked.connect(lambda: g.setText(self.edit.text()))
        self.push.clicked.connect(lambda: print(g.text()))
        self.dialog.setFixedSize(200, 200)
        self.dialog.show()

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    main = MainWindwos()
    main.show()
    sys.exit(app.exec_())
python

1 个回答

  1. Best Answer

    它在队列中self.main = MainWindwos()。使用它，您每次都使用它的列表创建一个新窗口，尽管您想更改旧窗口中的值。

    您Click需要将链接传递给它将使用的窗口：

    import sys
from PyQt5 import QtWidgets
from PyQt5 import QtGui
from PyQt5 import QtCore


class MainWindwos(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()

        self.asd = Click(self)

        self.setFont(QtGui.QFont('Times', 13))
        self.setFixedSize(400, 600)

        self.listwidget = QtWidgets.QListWidget(self)
        self.listwidget.resize(400, 600)
        self.listwidget.addItem('привет')
        self.listwidget.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
        self.listwidget.customContextMenuRequested.connect(self.asd.edit_item)


class Click:
    def __init__(self, main):
        self.main = main

    def edit_item(self, item):
        item = self.main.listwidget.itemAt(item)

        self.dialog = QtWidgets.QDialog()
        self.dialog.setFont(QtGui.QFont('Times', 13))

        self.edit = QtWidgets.QLineEdit(self.dialog)
        self.edit.setText(item.text())
        self.edit.resize(200, 30)

        self.push = QtWidgets.QPushButton(self.dialog)
        self.push.setText('сохранить')
        self.push.move(0, 50)
        self.push.clicked.connect(lambda: item.setText(self.edit.text()))
        self.push.clicked.connect(lambda: print(item.text()))

        self.dialog.setFixedSize(200, 200)
        self.dialog.show()


if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)

    main = MainWindwos()
    main.show()

    sys.exit(app.exec_())
    • 4

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