单击项目的 PyQt 奇怪行为

Question

我有一个包含多行的 table，在第 0 列我放了一个复选框，定义如下：

for char in accounts:
    for columnNumber in range(numberColumns):
        pWidget = QWidget()
        pCheckbox = QCheckBox()
        pLayout = QVBoxLayout(pWidget)
        pLayout.addWidget(pCheckbox)
        pLayout.setAlignment(Qt.AlignCenter)
        pLayout.setContentsMargins(0, 0 ,0, 0)
        pCheckbox.setCheckState(False)
        pCheckbox.clicked.connect(self.handleItemClicked)
        pWidget.setLayout(pLayout)
        self.mainAccountTable.insertRow(currentRowCount)
        self.mainAccountTable.setCellWidget(currentRowCount, 0, pWidget)
        self.mainAccountTable.setItem(currentRowCount, 1, QTableWidgetItem(char[1]))

我有一个处理点击的连接方法：

def handleItemClicked(self):
    try:
        #self.accountsSelected = []
        for account in range(self.mainAccountTable.rowCount()):
            if self.mainAccountTable.cellWidget(account, 0).findChild(type(QCheckBox())).isChecked():
                self.accountsSelected.add(self.mainAccountTable.item(account, 1).text())
                print ("yes:",self.accountsSelected)
            else:
                self.accountsSelected.remove(self.mainAccountTable.item(account, 1).text())
                print ("no:",self.accountsSelected)
    except Exception as e:
        print ("Error",e)

令我困扰的是它运行完美，但只有当我选中或取消选中第一个复选框（第 0 行，第 0 列）时它才会刷新结果。我也尝试将信号与 toggled 连接......结果相同。那么，当我选中或取消选中除第一行以外的其他行时，如何更新结果呢？提前致谢。

稍后编辑：我更新了我的代码，输出是这样的：如果我选中除第一个复选框以外的其他复选框，这就是输出： 'Account1' 如果我选择了，假设有 5 个帐户，并且我还选中了第一个复选框，这是输出：

    yes: {'Account2', 'Account1'}
    yes: {'Account2', 'Account1'}
    yes: {'Account2', 'Account1', 'Account3'}
    yes: {'Account2', 'Account1', 'Account3', 'Account4'}
    yes: {'Account2', 'Account1', 'Account3', 'Account4', 'Account5'}
    Error: 'Account 6' #is not selected which is true, BUT WHY is checking also for that?!?!

Answer 1

有 n = rowCount() 个复选框。但只有 1 个 pCheckBox 的 clicked() 信号连接到 self.handleItemClicked()。拿代码第一部分的connect()，连接每一个pCheckBox。由于有 n 个 pCheckboxes、pWidgets、pLayouts 删除 'self':

            pWidget = QWidget()
            pCheckbox = QCheckBox()
            pLayout = QVBoxLayout(pWidget)
            pLayout.addWidget(pCheckbox)
            pLayout.setAlignment(Qt.AlignCenter)
            pLayout.setContentsMargins(0, 0 ,0, 0)
            pCheckbox.setCheckState(False)
            pCheckBox.clicked.connect(self.handleItemClicked)
            pWidget.setLayout(pLayout)
            self.mainAccountTable.insertRow(currentRowCount)
            self.mainAccountTable.setCellWidget(currentRowCount, 0, pWidget)

Answer 2

错误出现在 "else" 分支中，解决方法是为每次检查设置 2 个 for 循环：

def handleItemClicked(self, account):
    try:
        accountsSelected = set()

        for account in range(self.mainAccountTable.rowCount()):
            if self.mainAccountTable.cellWidget(account, 0).findChild(type(QCheckBox())).isChecked():
                accountsSelected.add(self.mainAccountTable.item(account, 1).text())                    
                print ("selected:",accountsSelected)
        for account in range(self.mainAccountTable.rowCount()):
            if not self.mainAccountTable.cellWidget(account, 0).findChild(type(QCheckBox())).isChecked():
                accountsSelected.remove(self.mainAccountTable.item(account, 1).text())
                print ("not selected:",accountsSelected)  

        print ("main:", accountsSelected)
        return accountsSelected
    except Exception as e:
        print ("error:",e)

单击项目的 PyQt 奇怪行为

PyQt strange behavior on clicked items

python

signals

pyqt