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DVDI_CURRENT_UOPS

Query which user commands are currently valid.

DWORD DVDQueryAttribute (DVDI_CURRENT_UOPS, NULL);

Arguments
NULL

Figure 7.10: System Parameters settings

Return value
If successful, returns a DWORD value containing bits for all user operations (UOP). Each bit in the DWORD represents the state (valid or not valid) of a user operation. If the bit corresponding to a user operation is set, then that user operation is prohibited.

0xFFFFFFFF if error (you can query error code using DVDGetLastError).

DVDE_ARG Arguments are not valid.
DVDE_UNAUTHORIZED Unauthorized operation.

Figure 7.11: DVDI_CURRENT_UOPS Operating Systems and Streaming Models
\begin{figure}\centering\begin{tabular}{\vert l\vert c\vert c\vert c\vert c\vert...
...$\bullet$& & & \\
Linux & & $\bullet$& & & \\
\hline
\end{tabular}\end{figure}



mabelsha 2002-03-26