CMapWordToOb Class

Article
04/28/2015

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

class CMapWordToOb : public CObject

Members

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

Name	Description
CMapStringToOb::CMapStringToOb	Constructor.

Public Methods

Name	Description
CMapStringToOb::GetCount	Returns the number of elements in this map.
CMapStringToOb::GetHashTableSize	Determines the current number of elements in the hash table.
CMapStringToOb::GetNextAssoc	Gets the next element for iterating.
CMapStringToOb::GetSize	Returns the number of elements in this map.
CMapStringToOb::GetStartPosition	Returns the position of the first element.
CMapStringToOb::HashKey	Calculates the hash value of a specified key.
CMapStringToOb::InitHashTable	Initializes the hash table.
CMapStringToOb::IsEmpty	Tests for the empty-map condition (no elements).
CMapStringToOb::Lookup	Looks 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::LookupKey	Returns a reference to the key associated with the specified key value.
CMapStringToOb::RemoveAll	Removes all the elements from this map.
CMapStringToOb::RemoveKey	Removes an element specified by a key.
CMapStringToOb::SetAt	Inserts an element into the map; replaces an existing element if a matching key is found.

Public Operators

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

Remarks

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.

Inheritance Hierarchy

CObject

CMapWordToOb

Requirements

Header: afxcoll.h

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