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Determines the size, in bytes, of a property value array and validates the memory associated with the array.
Client applications and service providers
If NULL is passed in the pcb parameter, the ScCountProps function validates the array of notifications but no counting is done. If a non-null value is passed in pcb, the ScCountNotifications function determines the size of the array and stores the cause pcb. The pcb parameter must be large enough to contain the entire array.
As it is counting, ScCountProps validates the memory associated with the array. ScCountProps only works with properties about which MAPI has information.