connectui-mode &QComboBoxcurrentIndexChanged this thisconst QString& mode on_modeComboBox_currentIndexChangedmode;提示GQtClientSmarthome_Clientuserswidgetcpp40 error no matching function for call

The error message suggests that there is no matching function for the connect call.

The issue might be with the connection syntax. Instead of using the lambda function directly, you can define a slot in your class and connect it to the currentIndexChanged signal of the QComboBox. Here's an example:

// Define a slot in your class
void UsersWidget::on_modeComboBox_currentIndexChanged(const QString& mode) {
    // Your slot implementation
}

// Connect the signal to the slot
connect(ui->mode, QOverload<const QString&>::of(&QComboBox::currentIndexChanged), this, &UsersWidget::on_modeComboBox_currentIndexChanged);

Make sure to replace UsersWidget with the appropriate class name if you are using a different class.