IDvdInfo2::GetDVDTextNumberOfLanguages method (strmif.h)
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 |
|---|---|
|
Success. |
|
Invalid argument. |
|
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 |