L_DicomGetParentElement

#include "Ltdic.h"

pDICOMELEMENT EXT_FUNCTION L_DicomGetParentElement(hDS, pElement)

HDICOMDS hDS;	/* a DICOM handle */
pDICOMELEMENT pElement;	/* pointer to a DICOMELEMENT structure */

Returns a pointer to the item in the Data Set that contains the parent of the specified item.

Parameter	Description
hDS	A DICOM handle.
pElement	Pointer to a DICOMELEMENT structure that contains an item in the Data Set.

Returns

!NULL	A pointer to a DICOMELEMENT structure that contains the item in the Data Set that is the parent of the item specified in pElement.
NULL	pElement has no parent. (pElement is a Level 0 item.)

Comments

The parent is the ancestor one level higher than the specified item. If the specified item is a Level 0 item, this function will return NULL. Please note that the numbering of the items in this illustration is arbitrary and does not imply order.

$image\GetPrnt.gif$

If the passed pointer points to :	The function returns a pointer to :
Item 1	NULL
Item 2	Item 3
Item 4	Item3
Item 5	Item 6

The following functions will also help you navigate the Data Set:

L_DicomGetFirstElement

L_DicomGetLastElement

L_DicomGetNextElement

L_DicomGetRootElement

L_DicomGetChildElement

Required DLLs and Libraries

LTDIC

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application

See Also

Functions:	L_DicomGetFirstElement, L_DicomGetLastElement, L_DicomGetNextElement, L_DicomGetPrevElement, L_DicomGetCountModule, L_DicomGetRootElement, L_DicomGetChildElement
Topics:	Working with Data Sets

Example

/* This example displays the parent’s name of an element */

L_VOID Test()
{
   HDICOMDS       hDS;
   pDICOMELEMENT  pParent;
   pDICOMELEMENT  pElement;
   pDICOMTAG      pTag;
   L_CHAR         szUnknown[]="Unknown";
   L_CHAR        *p;

   hDS = L_DicomCreateDS(NULL);

   L_DicomInitDS(hDS, CLASS_XA_BIPLANE_IMAGE_STORAGE_RETIRED, 0);

   pElement = L_DicomFindFirstElement(hDS, NULL, TAG_RADIATION_SETTING, FALSE);
   if (pElement != NULL)
   {
      pParent = L_DicomGetParentElement(hDS, pElement);
      if (pParent != NULL)
      {
         pTag = L_DicomFindTag(pParent->nTag);
         if (pTag != NULL)
         {
            p = pTag->pszName;
         }
         else
         {
            p = szUnknown;
         }

         MessageBox(NULL, p, "Notice", MB_OK);
      }
   }

   L_DicomFreeDS(hDS);
}