CMapWordToOb Class

 

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Supports maps of CObject pointers keyed by 16-bit words.

class CMapWordToOb : public CObject  

The member functions of CMapWordToOb are similar to the member functions of class CMapStringToOb. Because of this similarity, you can use the CMapStringToOb reference documentation for member function specifics. Wherever you see a CString or a const pointer to char as a function parameter or return value, substitute WORD.

BOOL CMapStringToOb::Lookup( const char* <key>,

CObject*& <rValue> ) const;

for example, translates to

BOOL CMapWordToOb::Lookup( WORD <key>, CObject*& <rValue> ) const;

Public Constructors

NameDescription
CMapStringToOb::CMapStringToObConstructor.

Public Methods

NameDescription
CMapStringToOb::GetCountReturns the number of elements in this map.
CMapStringToOb::GetHashTableSizeDetermines the current number of elements in the hash table.
CMapStringToOb::GetNextAssocGets the next element for iterating.
CMapStringToOb::GetSizeReturns the number of elements in this map.
CMapStringToOb::GetStartPositionReturns the position of the first element.
CMapStringToOb::HashKeyCalculates the hash value of a specified key.
CMapStringToOb::InitHashTableInitializes the hash table.
CMapStringToOb::IsEmptyTests for the empty-map condition (no elements).
CMapStringToOb::LookupLooks up a void pointer based on the void pointer key. The pointer value, not the entity it points to, is used for the key comparison.
CMapStringToOb::LookupKeyReturns a reference to the key associated with the specified key value.
CMapStringToOb::RemoveAllRemoves all the elements from this map.
CMapStringToOb::RemoveKeyRemoves an element specified by a key.
CMapStringToOb::SetAtInserts an element into the map; replaces an existing element if a matching key is found.

Public Operators

NameDescription
CMapStringToOb::operator [ ]Inserts an element into the map — operator substitution for SetAt.

CMapWordToOb incorporates the IMPLEMENT_SERIAL macro to support serialization and dumping of its elements. Each element is serialized in turn if a map is stored to an archive, either with the overloaded insertion ( <<) operator or with the Serialize member function.

If you need a dump of individual WORD- CObject elements, you must set the depth of the dump context to 1 or greater.

When a CMapWordToOb object is deleted, or when its elements are removed, the CObject pointers are removed. The objects referenced by the CObject pointers are not destroyed.

For more information on CMapWordToOb, see the article Collections.

CObject

CMapWordToOb

Header: afxcoll.h

CObject Class
Hierarchy Chart

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