LDicomDS::GetNextKey

#include "ltdic.h"

pDICOMELEMENT LDicomDS::GetNextKey(pElement, bTree)

Returns a pointer to the item in the Dicom Dir Data Set that immediately follows the specified item.

Parameters

pDICOMELEMENT pElement

Pointer to a DICOMELEMENT structure that contains an item in the Data Set. A pointer to the item in the Data Set that immediately follows this item 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 item in the Data Set that immediately follows the item specified in pElement.
NULL There is not an item following pElement. (pElement is the last item in the Data Set.)

Comments

If the Data Set is evaluated as a tree structure, this function returns the next 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\GetNxtTr.gif
If the passed pointer points to: The function returns a pointer to:
Item 1 Item 2
Item 3 Item 4
Item 5 NULL
Item 6 Item 7

If the Data Set is evaluated as a list, the next 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\GetNtLst.gif
|If the passed pointer points to:|The function returns a pointer to:| |Item 14|Item 15| |Item 4|Item 5| |Item 8|Item 9| |Item 19|Item 20| |Item 27|Item 28| |Item 30|NULL|

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

LDicomDS::GetFirstKey

LDicomDS::GetPrevKey

LDicomDS::GetLastKey

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

Help Version 21.0.2021.4.7
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS DICOM C++ Class Library Help