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Query which user commands are currently valid.
DWORD DVDQueryAttribute (DVDI_CURRENT_UOPS, NULL);
Arguments
- NULL
Figure 7.10:
System Parameters settings
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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
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mabelsha
2002-03-26