IAMTimelineObj::GetSubObject method

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Note

[Deprecated. This API may be removed from future releases of Windows.]

 

The GetSubObject method retrieves the subobject associated with this object.

Syntax

HRESULT GetSubObject(
  [out, retval] IUnknown **pVal
);

Parameters

pVal [out, retval]

Receives a pointer to the subobject's IUnknown interface. If the object does not have a subobject, the value is set to NULL.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

Every timeline object can hold a pointer to an associated subobject.

If the value returned in pVal is not NULL, the IUnknown interface has an outstanding reference count. Be sure to release the interface when you are finished using it.

Note

The header file Qedit.h is not compatible with Direct3D headers later than version 7.

 

Note

To obtain Qedit.h, download the Microsoft Windows SDK Update for Windows Vista and .NET Framework 3.0. Qedit.h is not available in the Microsoft Windows SDK for Windows 7 and .NET Framework 3.5 Service Pack 1.

 

Requirements

Requirement	Value
Header	Qedit.h
Library	Strmiids.lib

See also

IAMTimelineObj Interface

Error and Success Codes