C / C++ / MFC

<pre>QList<QBluetoothHostInfo> information_main = QBluetoothLocalDevice::allDevices();

QList<QBluetoothHostInfo> information_main; 

is "class variable" why do I have to "initialize " it again in the method?

The "index" is method variable (local) and is initialized to 0. - So why am I running out of index range ?

If you kindly answer the above and refrain from critiquing my coding style I would be grateful.

Thanks 






<pre lang="text"><pre lang="c++">
<pre>  // task retrive all locla BT devices
    // changed to class variable
    QList<QBluetoothHostInfo> information_main = QBluetoothLocalDevice::allDevices();
    qDebug() << "QDEBUG TRACE //11/23/2020 # of local BT detetced  " <<  information_main.count();

    // add to display
    // add test text - output
    //on_pushButton_7_clicked()
    ui->listWidget->addItem("MainWindow test # of local BT detetced  ");
    ui->listWidget->addItem("# of local BT detetced  ");
    ui->listWidget->addItem("information_main.count())");
    //TDOD add conversion

    ui->listWidget->addItem("TODO add conversion");
    // ui->listWidget->addItem( fromStdString(information_main.count());
    //information_main.first();
    // display all adapters
    int index = 0;
    do
    {
        information_main.at(index).address().toString();
        ui->listWidget->addItem("information_main.at(0).address()");
        ui->listWidget->addItem( information_main.at(index).address().toString());
        ui->listWidget->addItem(" information_main.at(0).name()");
        ui->listWidget->addItem( information_main.at(index).name());
        index++;
    }    while( index != information_main.count() );

    qDebug() << "file     " << __FILE__;
    qDebug() << "function "<<__FUNCTION__;
    qDebug() << "@line    " << __LINE__;
    qDebug()<<"TEMPORARY EXIT ";
    information_main.count();
    //exit(99);
#endif