通過從 QlistWidget 中選擇的項(xiàng)目更新 QLineEdit，根據(jù)我的意愿更新第一個(gè)框。但是第二個(gè)文本框和第三個(gè)文本框，沒有被所選項(xiàng)目更新。如果我們?yōu)榈诙€(gè)文本框第一個(gè)文本框和第二個(gè)文本框更新選擇項(xiàng)目。而對(duì)于第三個(gè)，沒有反應(yīng)？如何解決文件：鼠標(biāo)點(diǎn)擊.pyimport sysfrom mouseclick_source import *textbox1_item = ["Red", "Green", "Blue", "Brown", "White", "Black", "Grey",                   "Dark Red", "Dark Green", "Dark Blue"]textbox2_item = ["Gold", "Silver", "Bronze", "Copper", "Iron", "Aluminium",                 "Taitanium"]textbox3_item = ["Indian Ocean", "Arabian Sea", "Bay of Bengal", "Black Sea",                  "Pacific Ocean"]class Mclick_sample_main(QWidget):    def __init__(self):        super().__init__()        self.setWindowTitle("Mouse click Samples")        self.textbox1 = QLineEdit()        self.textbox2 = QLineEdit()        self.textbox3 = QLineEdit()        self.listbox1 = QListWidget()        self.listbox2 = QListWidget()        self.textbox1.setObjectName("textbox1")        self.textbox2.setObjectName("textbox2")        self.textbox3.setObjectName("textbox3")        self.listbox1.setObjectName("listbox1")        self.listbox2.setObjectName("listbox2")        vbox = QVBoxLayout(self)        vbox.addWidget(self.textbox1)        vbox.addWidget(self.textbox2)        vbox.addWidget(self.textbox3)        vbox.addWidget(self.listbox1)        QApplication.instance().focusChanged.connect(self.on_focusChanged)    def on_focusChanged(self):        fwidget = QApplication.focusWidget()        if fwidget is not None:            if fwidget.objectName() == "textbox1":                self.listbox1.clear()                self.listbox1.addItems(textbox1_item)                self.getdetails_1 = Sourcefile(self.textbox1, self.listbox1, self.listbox2)                #self.textbox1.textChanged.connect(self.getdetails_1.func_textbox_textchanged)                self.listbox1.itemClicked.connect(self.getdetails_1.listbox_clicked)                return True