#include "ltmm.h"

C Syntax

HRESULT IltmmMediaSampleDisp_get_Preroll(pMediaSampleDisp, pVal)

C++ Syntax

HRESULT get_Preroll(pVal)

IltmmMediaSampleDisp *pMediaSampleDisp;

pointer to an interface


pointer to a variable

Determines if this sample is a preroll sample. A preroll sample should not be displayed.

Parameter Description
pMediaSampleDisp Pointer to an IltmmMediaSampleDisp interface.
pVal Pointer to a variable to be updated with a value that indicates whether the sample is a preroll sample. Possible values are:
  Value Meaning
  VARIANT_TRUE The sample is a preroll sample.
  VARIANT_FALSE The sample is not a preroll sample.



The function was successful.

<> S_OK

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


Preroll samples are processed but not displayed. They are located in the media stream before the displayable samples.

Required DLLs and Libraries


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


Win32, x64

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