SBitMaskRestriction 

The SBitMaskRestriction structure describes a bitmask restriction, which is used to apply a bitmask to a particular property value and test the result.

Quick Info

typedef struct _SBitMaskRestriction

{ 

     ULONG relBMR;

     PT_LONG ulPropTag;

     ULONG ulMask;

} SBitMaskRestriction;

Members

relBMR

Relational operator describing how the mask specified in the ulMask member should be applied to the property tag. Possible values are:

BMR_EQZ

The result of applying the bitmask to the property should be tested for being equal to zero.

BMR_NEZ

The result of applying the bitmask to the property should be tested for not being equal to zero.

ulPropTag

Indicates the property tag of the property to which the bitmask is applied.

ulMask

Indicates the bitmask to apply to the property identified by ulPropTag.

Remarks

This restriction performs a logical AND operation using the bitmask described in the ulMask member and the value of the property described by the ulPropTag member. If the result is zero, then BMR_EQZ is satisfied. If it s nonzero   that is, if the property value has at least one of the same bits set as ulMask   then BMR_NEZ is satisfied.

See Also