#include "ltmm.h"

C Syntax

HRESULT IltmmDVDTitle_get_IsSourceLetterboxed(pDVDTitle, pVal)

C++ Syntax

HRESULT get_IsSourceLetterboxed(pVal)

IltmmDVDTitle *pDVDTitle;

pointer to an interface


pointer to a variable

Gets whether the source video is in letterbox format or not.

Parameter Description
pDVDTitle Pointer to an IltmmDVDTitle interface.
pVal Pointer to a variable to be updated with a value that indicates whether the source video is in letterbox format or not. Possible value are:
  Setting Description
  VARIANT_TRUE The source video is in a letterbox
  VARIANT_FALSE The source video is not in a letterbox



The function was successful.

<> S_OK

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


This property will return whether the video source is in a letterbox or not. Note that subpictures and menu buttons can only be displayed in the active video area.

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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