| Microsoft DirectX 9.0 |
This topic applies to Windows XP Service Pack 1 only.
The SPRM property retrieves the specified system parameter register.
Syntax
VidWebDVD.SPRM(
lIndex As Long
) As Short
Parameters
lIndex
Specifies the register to retrieve as a Long. The register number ranges from 0 through 23, inclusive.
Return Values
Returns a Short value representing the contents of the specified register. For a listing of possible return values, see the table under the Remarks section.
Error Codes
If the property fails, Err.Number may be set to one of the following values.
| Value | Description |
| E_UNEXPECTED | Unspecified error; possibly the graph not built. |
| E_INVALIDARG | lIndex less than 0 or greater than 23. |
Remarks
This property is read-only. The disc controls system parameter registers (SPRMs). A player application doesn't need to access these registers for any standard navigation functionality. SPRMs represent the status of the player. Each one has a meaning, set by user preferences, disc commands, and other occurrences that an application has no direct control over. An application can read these registers but cannot write to them. To use these registers effectively, you will probably need a more detailed knowledge of the DVD navigation commands than is provided in this documentation. The following table shows the contents of each register. For more detailed information on the register contents, see IDvdInfo2::GetAllSPRMs in the C++ reference section.
| Register | Contents |
| 0 | Language code |
| 1 | Audio stream number |
| 2 | Subpicture stream number |
| 3 | Current angle number |
| 4 | Title number |
| 5 | Current title number |
| 6 | PGC number |
| 7 | Current chapter number |
| 8 | Highlighted button number |
| 9 | Navigation timer |
| 10 | PGC jump for navigation timer |
| 11 | Karaoke audio presentation mode |
| 12 | PML country/region code |
| 13 | PML |
| 14 | Video setting |
| 15 | Audio capability |
| 16 | Audio language |
| 17 | Audio language extension |
| 18 | Subpicture language |
| 19 | Subpicture language extension |
| 20 | Player region code |
| 21 | Reserved |
| 22 | Reserved |
| 23 | Reserved |
Example
' Returning the property.
sSPRM = VidWebDVD.SPRM(lIndex)
See Also