SBitMaskRestriction

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Describes a bitmask restriction, which is used to perform a bitwise AND operation and test the result.

typedef struct _SBitMaskRestriction
{
  ULONG relBMR;
  PT_LONG ulPropTag;
  ULONG ulMask;
} SBitMaskRestriction;

Members

• relBMR
  Relational operator that describes how the mask specified in the ulMask member should be applied to the property tag. Possible values are as follows:

  • BMR_EQZ
    Perform a bitwise AND operation of the mask in the ulMask member with the property represented by the ulPropTag member and test for being equal to zero.

  • BMR_NEZ
    Perform a bitwise AND operation of the mask in the ulMask member with the property represented by the ulPropTag member and test for being not equal to zero.

• ulPropTag
  Property tag of the property to which the bitmask is applied.

• ulMask
  Bitmask to apply to the property identified by ulPropTag.

Remarks

The SBitMaskRestriction structure performs a bitwise 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, BMR_EQZ is satisfied. If it is nonzero, that is, if the property value has at least one of the same bits set as ulMask, then BMR_NEZ is satisfied.

For more information about the SBitMaskRestriction structure and restrictions in general, see About Restrictions.

See Also

Reference

SRestriction

Concepts

MAPI Structures