IBDAComparable::HashExact
| Microsoft DirectShow 9.0 |
IBDAComparable::HashExact
This topic applies to Update Rollup 2 for Microsoft Windows XP Media Center Edition 2005 and later.
The HashExact method generates a hash code for all of the tuning properties of an object.
Syntax
HRESULT HashExact( __int64* Result );
Parameters
Result
[out] Pointer to a variable that receives the result of the hash operation. This result is the hash code for the tuning properties of the object and its associated objects that are to be included in comparisons with other objects.
Return Values
If the method succeeds, it returns S_OK. If it fails, it returns an error code.
Remarks
This method generates a hash code from the values of the tuning properties in the object that implements the IBDAComparable interface, and its associated objects.
The caller can compare the resulting hash code to the hash code for another object of the same type to determine whether the two objects contain the same tuning information. The hash code incorporates the tuning properties in the object and its associated objects. If the hash codes for the two objects are identical, the two objects contain the same tuning information.
Requirements
Header: Include Bdaiface.h.
See Also