| Microsoft DirectX 9.0 |
The GetSubpictureAttributes method retrieves the attributes of the specified subpicture stream in the specified title or menu.
Syntax
HRESULT GetSubpictureAttributes(
ULONG ulStream,
DVD_SubpictureAttributes *pAttributes
);
Parameters
ulStream
[in] Index number, from 0 through 31, of the subpicture stream to query. See Remarks.
pAttributes
[out] Pointer to a DVD_SubpictureAttributes structure that receives the subpicture attributes.
Return Values
Returns one of the following HRESULT values.
| Return code | Description |
| S_OK | Success. |
| E_FAIL | No subpicture streams were found. |
| E_POINTER | Invalid argument. |
| VFW_E_ATTRIBUTES_DO_NOT_EXIST | The subpicture has no defined attributes. |
Remarks
The index numbers 0-31 are valid only for titles. Menus have only one subpicture stream, which must be specified using one of the constants in the table below:
| Value | Description |
| DVD_STREAM_DATA_CURRENT (0x800) | To query the currently selected subpicture stream. |
| DVD_STREAM_DATA_VMGM (0x400) | To query the subpicture attributes for the Video Manager or "Top" Menu. |
| DVD_STREAM_DATA_VTSM (0x401) | To query the subpicture attributes for the currently selected Video Title Set Menu. |
This method is demonstrated in the DVDSample application in CDvdCore::GetSPAttributes() and CSPLangDlg::GetSPLang.
See Also