Bendight,
Try something like this right after you create the control:
<code>
void MyClass::AddEventListeners()
{
HRESULT hr = S_OK;
CComPtr<IQTControl> spQTControl;
CComPtr<IQTMovie> spQTMovie;
CComPtr<IQTEventListeners> spEventListeners;
// Get interface pointer to control
hr = m_ax.QueryControl(&spQTControl) )
// Get interface pointer to movie
hr = spQTControl->get_Movie(&spQTMovie));
if (!spQTMovie)
return;
// Get interface pointer to event listeners collection
hr = spQTMovie->get_EventListeners(&spEventListeners );
if (! spEventListeners)
return;
spEventListeners->RemoveAll();
spEventListeners->Add(qtEventClassTemporal, qtEventTimeWillChange);
spEventListeners->Add(qtEventClassAudio, qtEventAudioVolumeDidChange);
spEventListeners->Add(qtEventClassStateChange, qtEventRateWillChange);
spEventListeners->Add(qtEventClassApplicationRequest,
qtEventShowStatusStringRequest);
return;
}
void __stdcall MyClass::SinkQTEvent(long EventClass, long EventID, long
Phase, IQTEventObject* EventObject, VARIANT_BOOL* Cancel)
{
float rate;
long time, volume;
CComPtr<IQTEventObject> event = EventObject;
switch (EventID)
{
case qtEventShowStatusStringRequest:
{
enum {
kStatusStringIsURLLink = 1L << 1,
kStatusStringIsStreamingStatus = 1L << 2,
kStatusHasCodeNumber = 1L << 3, /* high 16 bits of
stringTypeFlags is error code number*/
kStatusIsError = 1L << 4
};
VARIANT msgString,
msgFlags,
msgCode;
TCHAR* pStrg=NULL;
event->GetParam(qtEventParamStatusString, &msgString);
VariantInit(&msgFlags);
event->GetParam((QTEventObjectParametersEnum)'flag', &vTemp);
if ( FAILED(VariantChangeType(&msgFlags, &vTemp, 0, VT_I4)) )
break;
VariantInit(&msgCode);
event->GetParam(qtEventParamStatusCode, &vTemp);
if ( FAILED(VariantChangeType(&msgCode, &vTemp, 0, VT_I4)) )
break;
theEvent.retValue = msgCode.lVal;
if ( V_VT(&msgString) == VT_BSTR )
pStrg = OLE2T(msgString.bstrVal);
}
}
}
// and you will want SinkQTEvent declared in the header for the class like
this
BEGIN_SINK_MAP(CMainWindow)
SINK_ENTRY_EX(ID_CHILD_CONTROL, DIID__IQTControlEvents, 1, SinkQTEvent)
END_SINK_MAP()
void __stdcall SinkQTEvent(long EventClass, long EventID, long Phase,
IQTEventObject* EventObject, VARIANT_BOOL* Cancel);
</code>
Hope this helps. I did not put in much error checking and I left out how
to handle the other events (I can show you that if you wish). I believe
there is some documentation coming soon but I just do not know when.
Tom McHale
QuickTime Engineering
On Aug 16, 2005, at 7:56 AM, email@hidden wrote:
Hello everyone
over the past weeks I've been experimenting with the new QuckTime ActiveX
control, and I realize that it's still being changed quite a bit, and no
documentation seems to be available yet. Nevertheless, I find it very
practical as the simpler functionality is intuitive to use, and with a
little QuickTime api knowldege, many other aspects of the control can be
guessed at as well.
What I haven't figured out, however, is how I can make the control fire
QTEvent notifications. And I suspect that QTEvent is the only way to get
more precise notifications about what the control is doing.
With the version 7.0.2.70 update (public preview 3, I believe), for
example, the control doesn't seem to be sending messages like
"Buffering..." as StatusUpdate events anymore. So if I'd like
"Buffering.." back, I'd probably have to subscribe to some event
interface now...
I've tried subscribing to events in the following way:
axQTControl.QuickTime.EventListeners.Add(
QTOLibrary.QTEventClassesEnum.qtEventClassStateChange,
QTOLibrary.QTEventIDsEnum.qtEventLoadStateDidChange,
1, //what flags are needed here?
null); //probably optional, right?
I've tried registring for events with other interfaces (not just
control.QuickTime) as well, and I've called EventListeners.Add() with
other argument combinations - all without success.
My question is therefore: Does anyone have more detailed knowledge on how
to get QTEvent events out of the new QuickTime control?
Besides the fact that I'm not entirely sure about which combinations of
QTEventClassesEnum and QTEventIDsEnum are allowed, I have no clue as to
what values tha Flags prameter (3rd argument of the EventListeners.Add()
method) should be. The fourth argument I'd expect to be some subscriber
reference.
Any help would be greatly apprecieated, thanks.
Baenz
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