有没有办法通过其在网格中的位置删除小部件或在此网格中删除行？

Question

我需要具有通过.addWidget创建无限小部件的能力（在网格中，新的小部件-新行）。这东西我已经有了。但是我还需要能够按其位置删除小部件的功能。我试过了：

from PyQt5 import QtWidgets, QtGui
from PyQt5.QtCore import QTime, QTimer, QObject
from PyQt5.QtWidgets import QMainWindow, QApplication, QLCDNumber, QPushButton, QGridLayout, QLabel, QLineEdit, QTextEdit, QGroupBox
import sys
from somethingtestui import Ui_MainWindow

global selection
selection = 1


class mywindow(QtWidgets.QMainWindow):

def __init__(self):
    super(mywindow, self).__init__()
    self.ui = Ui_MainWindow()
    self.ui.setupUi(self)
    self.ui.pushButton.clicked.connect(self.add)

def add(self):
    global selection
    self.row = QTextEdit('')
    self.text3 = QPushButton('Delete row')
    self.ui.gridLayout.addWidget(self.row, selection, 0, 1, 1)
    self.ui.gridLayout.addWidget(self.text3, selection, 1, 1, 1)
    # global delf
    def delf():
        global selection
        selection = selection-1
        number = self.ui.gridLayout.itemAtPosition(selection,1)
        print(number)
        self.row.deleteLater()
        self.rrow = None
        self.text3.deleteLater()
        self.text3 = None
    self.text3.clicked.connect(delf)
    selection = selection+1
app = QtWidgets.QApplication([])
application = mywindow()
application.show()

sys.exit(app.exec())

有了它，我可以添加许多小部件。如果有一个创建的窗口小部件，我可以删除它并重复它。但是，如果有2个或多个创建的小部件，我可以删除其中一个，然后在另一行中单击“删除”按钮后崩溃：

Traceback (most recent call last):
  File "E:\Programs\YandexDisk\Tempfiles\TournamentBot\testi22.py", line 31, in delf
    self.row.deleteLater()
RuntimeError: wrapped C/C++ object of type QTextEdit has been deleted

Answer 1

我为自己找到了解决方案

from somethingtestui import Ui_MainWindow

global rowcnt
rowcnt = 1


class mywindow(QtWidgets.QMainWindow):

def __init__(self):
    super(mywindow, self).__init__()
    self.ui = Ui_MainWindow()
    self.ui.setupUi(self)
    self.ui.pushButton.clicked.connect(self.add)
    self.ui.gridLayout.setRowMinimumHeight(50,50)
    self.ui.gridLayout.setColumnMinimumWidth(50,50)

def add(self):
    global rowcnt
    self.row = QTextEdit('')
    self.delbtn = QPushButton('Delete row')
    self.ui.gridLayout.addWidget(self.row, rowcnt, 0, 1, 1)
    self.ui.gridLayout.addWidget(self.delbtn, rowcnt, 1, 1, 1)
    w = self.ui.gridLayout.itemAtPosition(rowcnt,1).widget()
    def delf(currow):
        global rowcnt
        rowcnt = rowcnt-1
        number = self.ui.gridLayout.itemAtPosition(currow,1).widget()
        number2 = self.ui.gridLayout.itemAtPosition(currow,0).widget()
        number.deleteLater()
        number2.deleteLater()
    w.clicked.connect(lambda: delf(mrowcnt))
    rowcnt = rowcnt+1
    mrowcnt = rowcnt-1