IltmmConvert::GetSubObject

#include "ltmm.h"

C Syntax

HRESULT IltmmConvert__getSubObject(pConvert, ObjType, ppObject)

C++ Syntax

HRESULT GetSubObject(ObjType, ppObject)

 

IltmmConvert *pConvert;

/* pointer to an interface */

long ObjType

/* object to retrieve */

IUnknown **ppObject;

/* pointer to a pointer */

Retrieves the specified graph object.

Parameter

Description

pConvert

Pointer to an IltmmConvert interface.

ObjType

Value that indicates the graph object to retrieve. This must be one of the ltmmConvert_Object constants.

ppObject

Pointer to a variable that receives a the object's interface pointer.

Returns

S_OK

The function was successful.

<> S_OK

An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.

Comments

If the function succeeds, the user should release the returned interface pointer by calling the interface’s Release method.

To obtain objects (including a filter being cached) from the convert graph, use the IltmmConvert::GetSubObject function.

Required DLLs and Libraries

LTMM

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Elements:

ltmmConvert_Object Constants, IltmmTargetFormat::get_UseFilterCache, IltmmTargetFormat::put_UseFilterCache, IltmmTargetFormat::GetCacheObject, IltmmTargetFormat::ShowCacheDialog, IltmmTargetFormat::HasCacheDialog

Topics:

Multimedia Function Group

 

How to Use the DVD Writer to Write a DVD Image

Example

For an example, refer to Directly Accessing the Direct Show Objects.