LDicomDS::GetLastKey

#include "ltdic.h"

pDICOMELEMENT LDicomDS::GetLastKey(pElement, bTree)

Returns a pointer to the last item in the Dicom Dir Data Set.

Parameters

pDICOMELEMENT pElement

Pointer to a DICOMELEMENT structure within the Data Set. A pointer to the DICOMELEMENT structure that contains the last item in the Data Set will be returned.

L_BOOL bTree

Flag that indicates how the Data Set will be evaluated. Possible values are:

Value Meaning
TRUE Evaluate the Data Set as a tree.
FALSE Evaluate the Data Set as a list.

Returns

Value Meaning
!NULL A pointer to a DICOMELEMENT structure that contains the last item in the Data Set.
NULL The Data Set is empty.

Comments

If the Data Set is evaluated as a tree structure, this function returns the last item on the same level as pElement with the same parent as pElement.

NOTE: The numbering of the items in this illustration is arbitrary and does not imply order.

image\GetLstTr.gif
If the passed pointer points to: The function returns a pointer to:
Item 1 Item 2
Item 3 Item 4
Item 5 Item 5
Item 6 Item 7
NULL Item 2

If the Data Set is evaluated as a list, the last item in the list is returned.

NOTE: The numbering of the items in this illustration does indicate the order of the items when the Data Set is evaluated as a list.

image\GetLtLst.gif
If the passed pointer points to: The function returns a pointer to:
NULL Item 30
Item 12 Item 30
Item 14 Item 30
Item 22 Item 30
Item 25 Item 30

The following functions will also help you navigate the Data Set as either a tree or a list:

LDicomDS::GetFirstKey

LDicomDS::GetPrevKey

LDicomDS::GetNextKey

If you evaluate the Data Set as a tree, you can also use the following functions to navigate the tree:

LDicomDS::GetRootKey

LDicomDS::GetParentKey

LDicomDS::GetChildKey
Required DLLs and Libraries

Platforms

Win32, x64

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