IDvdInfo2::GetDVDTextNumberOfLanguages method (strmif.h)

Article
02/22/2024

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]

The GetDVDTextNumberOfLanguages method retrieves the number of languages in which DVD text strings appear.

Syntax

HRESULT GetDVDTextNumberOfLanguages(
  [out] ULONG *pulNumOfLangs
);

Parameters

[out] pulNumOfLangs

Receives the number of text languages.

Return value

Returns one of the following HRESULT values.

Return code	Description
S_OK	Success.
E_POINTER	Invalid argument.
E_UNEXPECTED	An unexpected internal error occurred.

Remarks

Depending on how the disc is authored, the number of languages will be valid either for the entire disc, or only for the current side of the disc.

If the DVD does not contain any text strings, the method succeeds, but pulNumOfLangs receives the value zero.

Requirements

Requirement	Value
Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Target Platform	Windows
Header	strmif.h (include Dshow.h)
Library	Strmiids.lib