Class TDblQueIterBase

class TDblQueIterBase;

Description

A base class that provides implementation for the doubly linked list iterator.

It also encapsulates a pointer to the current link list element.

The class is abstract and is not intended to be instantiated.

Members

Defined in TDblQueIterBase:
DoCurrent(), DoPostDec(), DoPostInc(), DoSet(), SetToFirst(), SetToLast(), TDblQueIterBase(), iHead, iNext, iOffset

protected: IMPORT_C TDblQueIterBase(TDblQueBase &aQue);

Description

Constructs the iterator for the specified doubly linked list.

Parameters

TDblQueBase &aQue A reference to a doubly linked list header.

IMPORT_C void SetToFirst();

Description

Sets the iterator to point to the first element in the doubly linked list.

The function can be called to re-set the pointer at any time during the iterator's existence.

The function can be called even if the list has no elements.

IMPORT_C void SetToLast();

Description

Sets the iterator to point to the last element in the doubly linked list. The function can be called to re-set the pointer at any time during the iterator's existence.

The function can be called even if the list has no elements.

protected: IMPORT_C TAny *DoPostInc();

Description

Gets the current item and then moves to the next item.

The function is an implementation for TDblQueIter::operator++().

Return value

TAny * A pointer to the current list element.

protected: IMPORT_C TAny *DoPostDec();

Description

Gets the current item and then moves to the previous item.

The function is an implementation for TDblQueIter::operator--().

Return value

TAny * A pointer to the current list element.

protected: IMPORT_C TAny *DoCurrent();

Description

Gets the current item in the queue.

The function is an implementation for TDblQueIter::operator T*().

Return value

TAny * A pointer to the current list element.

protected: IMPORT_C void DoSet(TAny *aLink);

Description

Sets the iterator to point to a specific element in the list.

The function is an implementation for TDblQueIter::Set().

Parameters

TAny *aLink A pointer to the current list element.

protected: TInt iOffset;

Description

The offset of a component link object within elements that form the list.

protected: TDblQueLinkBase * iHead;

Description

Pointer to the anchor for the list.

protected: TDblQueLinkBase * iNext;

Description

Pointer to the current element.