QAxBase Class

connect(buttonBack, SIGNAL(clicked()), webBrowser, SLOT(GoBack()));

activeX->setProperty("text", "some text");
int value = activeX->property("value");

webBrowser->dynamicCall("GoHome()");

connect(webBrowser, SIGNAL(TitleChanged(QString)),
        this, SLOT(setCaption(QString)));

dispinterface IControl
{
properties:
    [id(1)] BSTR text;
    [id(2)] IFontDisp *font;

methods:
    [id(6)] void showColumn([in] int i);
    [id(3)] bool addColumn([in] BSTR t);
    [id(4)] int fillList([in, out] SAFEARRAY(VARIANT) *list);
    [id(5)] IDispatch *item([in] int i);
};

QAxObject object("<CLSID>");

QString text = object.property("text").toString();
object.setProperty("font", QFont("Times New Roman", 12));

connect(this, SIGNAL(clicked(int)), &object, SLOT(showColumn(int)));
bool ok = object.dynamicCall("addColumn(const QString&)", "Column 1").toBool();

QList<QVariant> varlist;
QList<QVariant> parameters;
parameters << QVariant(varlist);
int n = object.dynamicCall("fillList(QList<QVariant>&)", parameters).toInt();

QAxObject *item = object.querySubItem("item(int)", 5);

IUnknown *iface = 0;
activeX->queryInterface(IID_IUnknown, (void**)&iface);
if (iface) {
    // use the interface
    iface->Release();
}

Member Function Documentation

[virtual] void QAxBase::clear()

Disconnects and destroys the COM object.

If you reimplement this function you must also reimplement the destructor to call clear(), and call this implementation at the end of your clear() function.

void QAxBase::disableClassInfo()

Disables the class info generation for this ActiveX container. If you don't require any class information about the ActiveX control use this function to speed up the meta object generation.

Note that this function must be called immediately after construction of the object

void QAxBase::disableEventSink()

Disables the event sink implementation for this ActiveX container. If you don't intend to listen to the ActiveX control's events use this function to speed up the meta object generation.

Some ActiveX controls might be unstable when connected to an event sink. To get OLE events you must use standard COM methods to register your own event sink. Use queryInterface() to get access to the raw COM object.

Note that this function should be called immediately after construction of the object.

void QAxBase::disableMetaObject()

Disables the meta object generation for this ActiveX container. This also disables the event sink and class info generation. If you don't intend to use the Qt meta object implementation call this function to speed up instantiation of the control. You will still be able to call the object through dynamicCall(), but signals, slots and properties will not be available with QObject APIs.

Some ActiveX controls might be unstable when used with OLE automation. Use standard COM methods to use those controls through the COM interfaces provided by queryInterface().

Note that this function must be called immediately after construction of the object.

[virtual protected] bool QAxBase::initialize(IUnknown **ptr)

This virtual function is called by setControl() and creates the requested COM object. ptr is set to the object's IUnknown implementation. The function returns true if the object initialization succeeded; otherwise the function returns false.

The default implementation interprets the string returned by control(), and calls initializeRemote(), initializeLicensed() or initializeActive() if the string matches the respective patterns. If control() is the name of an existing file, initializeFromFile() is called. If no pattern is matched, or if remote or licensed initialization fails, CoCreateInstance is used directly to create the object.

See the control property documentation for details about supported patterns.

The interface returned in ptr must be referenced exactly once when this function returns. The interface provided by e.g. CoCreateInstance is already referenced, and there is no need to reference it again.

[protected] bool QAxBase::initializeActive(IUnknown **ptr)

Connects to an active instance running on the current machine, and returns the IUnknown interface to the running object in ptr. This function returns true if successful, otherwise returns false.

This function is called by initialize() if the control string contains the substring "}&".

See also initialize().

[protected] bool QAxBase::initializeFromFile(IUnknown **ptr)

Creates the COM object handling the filename in the control property, and returns the IUnknown interface to the object in ptr. This function returns true if successful, otherwise returns false.

This function is called by initialize() if the control string is the name of an existing file.

See also initialize().

[protected] bool QAxBase::initializeLicensed(IUnknown **ptr)

Creates an instance of a licensed control, and returns the IUnknown interface to the object in ptr. This functions returns true if successful, otherwise returns false.

This function is called by initialize() if the control string contains the substring "}:". The license key needs to follow this substring.

See also initialize().

[protected] bool QAxBase::initializeRemote(IUnknown **ptr)

Creates the instance on a remote server, and returns the IUnknown interface to the object in ptr. This function returns true if successful, otherwise returns false.

This function is called by initialize() if the control string contains the substring "/{". The information about the remote machine needs to be provided in front of the substring.

See also initialize().

bool QAxBase::setControl(const int &)