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91 lines
1.2 KiB
91 lines
1.2 KiB
/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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contain.hxx
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Abstract:
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This module contains the definition for the CONTAINER class, the most
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primitive, abstract class in the container sub-hierarchy. CONTAINERs
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of all types are repositories for OBJECTs. CONTAINER is the most abstract
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in that it makes no assumptions about the ordering of it's contents.
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Environment:
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ULIB, User Mode
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--*/
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#if ! defined( _CONTAINER_ )
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#define _CONTAINER_
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DECLARE_CLASS( CONTAINER );
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class CONTAINER : public OBJECT {
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public:
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VIRTUAL
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~CONTAINER(
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);
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VIRTUAL
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BOOLEAN
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Put(
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IN OUT POBJECT Member
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) PURE;
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VIRTUAL
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ULONG
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QueryMemberCount(
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) CONST PURE;
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VIRTUAL
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BOOLEAN
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DeleteAllMembers(
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) PURE;
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NONVIRTUAL
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BOOLEAN
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IsEmpty(
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) CONST;
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protected:
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DECLARE_CONSTRUCTOR( CONTAINER );
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};
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INLINE
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BOOLEAN
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CONTAINER::IsEmpty(
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) CONST
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/*++
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Routine Description:
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Determine if the container is empty.
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Arguments:
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None.
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Return Value:
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BOOLEAN - TRUE if the container is empty.
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--*/
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{
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return QueryMemberCount() == 0;
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}
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#endif // _CONTAINER_
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