CMapPtrToWord Class
Supports maps of 16-bit words keyed by void pointers.
Syntax
class CMapPtrToWord : public CObject
Members
The member functions of CMapPtrToWord 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 CObject pointer as a function parameter or return value, substitute WORD. Wherever you see a CString or a const pointer to char as a function parameter or return value, substitute a pointer to void.
BOOL CMapPtrToWord::Lookup( const void* <key>, WORD& <rValue> ) const;
for example, translates to
BOOL CMapStringToOb::Lookup( const char* <key>, CObject*& <rValue> ) const;
Public Constructors
| Name | Description |
|---|---|
| CMapPtrToWord::CMapPtrToWord | Constructor. |
Public Methods
| Name | Description |
|---|---|
| CMapPtrToWord::GetCount | Returns the number of elements in this map. |
| CMapPtrToWord::GetHashTableSize | Determines the current number of elements in the hash table. |
| CMapPtrToWord::GetNextAssoc | Gets the next element for iterating. |
| CMapPtrToWord::GetSize | Returns the number of elements in this map. |
| CMapPtrToWord::GetStartPosition | Returns the position of the first element. |
| CMapPtrToWord::HashKey | Calculates the hash value of a specified key. |
| CMapPtrToWord::InitHashTable | Initializes the hash table. |
| CMapPtrToWord::IsEmpty | Tests for the empty-map condition (no elements). |
| CMapPtrToWord::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. |
| CMapPtrToWord::LookupKey | Returns a reference to the key associated with the specified key value. |
| CMapPtrToWord::RemoveAll | Removes all the elements from this map. |
| CMapPtrToWord::RemoveKey | Removes an element specified by a key. |
| CMapPtrToWord::SetAt | Inserts an element into the map; replaces an existing element if a matching key is found. |
Public Operators
| Name | Description |
|---|---|
| CMapPtrToWord::operator [ ] | Inserts an element into the map — operator substitution for SetAt. |
Remarks
CMapWordToPtr incorporates the IMPLEMENT_DYNAMIC macro to support run-time type access and dumping to a CDumpContext object. If you need a dump of individual map elements, you must set the depth of the dump context to 1 or greater.
Pointer-to-word maps may not be serialized.
When a CMapPtrToWord object is deleted, or when its elements are removed, the pointers and the words are removed. The entities referenced by the key pointers are not removed.
For more information on CMapPtrToWord, see the article Collections.
Inheritance Hierarchy
CMapPtrToWord
Requirements
Header: afxcoll.h