ActiveQt, activeX return values from methods

[sky]

Hi All,

I am trying to wrap an activeX object with a QAxWidget and invoke some methods on it. I am able to invoke methods which have parameters and am able to get the return values. But for methods which do not have any parameter I am able to invoke them but am not able to get the return arguments. The following are the few ways I have tired it:

eg: The active X object has methods:

a. string getName()
b string getAddress(int)

void myWidget::check(CLASSID)
{
    m_pAxWidget = new QAxWidget();
    bool b;
    b = connect(m_pAxWidget, SIGNAL(exception(int,QString,QString,QString)), this,
                SLOT(exception(int,QString,QString,QString)));
    setControl( CLASSID );
}
 
void myWidget::readit()
{
    QString ret;
    QMetaObject::invokeMethod(m_pAxWidget, "getName", Qt::DirectConnection,
                              Q_RETURN_ARG(QString, ret));
    qDebug()<<ret;  // prints an empty ""
 
    ret = (m_pAxWidget->dynamicCall("getName")).toString();
    qDebug()<<ret;  // prints an empty ""
}

void myWidget::check(CLASSID)
{
    m_pAxWidget = new QAxWidget();
    bool b;
    b = connect(m_pAxWidget, SIGNAL(exception(int,QString,QString,QString)), this,
                SLOT(exception(int,QString,QString,QString)));
    setControl( CLASSID );
}

void myWidget::readit()
{
    QString ret;
    QMetaObject::invokeMethod(m_pAxWidget, "getName", Qt::DirectConnection,
                              Q_RETURN_ARG(QString, ret));
    qDebug()<<ret;  // prints an empty ""

    ret = (m_pAxWidget->dynamicCall("getName")).toString();
    qDebug()<<ret;  // prints an empty ""
}

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I have checked all over the place but couldn't locate anybody facing this problem or posting a solution for it.

Sky

[joyer83]

Hi!

Shouldn't this:
setControl( CLASSID );

Be this:
m_pAxWidget->setControl( CLASSID );

[sky]

Hi Joyer83,

Oops!. Actually the class has a setControl which calls m_pAxWidget->setControl( CLASSID );

Thanks,
Sky.

[joyer83]

Hmm, maybe you could then use debugger to check what happens inside the dynamicCall() method?

[dbzhang800]

I think you should look at its manual which can be generated by following code

QString html = m_pAxWidget->generateDocumentation ();

QString html = m_pAxWidget->generateDocumentation ();

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you can save to an .html file or show it in an QTextBrowser or webview.