In This Topic ▼

L_DicomGetParentElement

Summary

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

Syntax

#include "Ltdic.h"

L_LTDIC_API pDICOMELEMENT L_DicomGetParentElement(hDS, pElement)

Parameters

pDICOMELEMENT pElement

Pointer to a DICOMELEMENT structure that contains an item in the Data Set.

Returns

Value	Meaning
!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:

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

Platforms

Win32, x64, Linux.

Example

This example displays the parent’s name of an element

L_INT DicomGetParentElementExample(L_VOID) 
{ 
   HDICOMDS       hDS; 
   pDICOMELEMENT  pParent; 
   pDICOMELEMENT  pElement; 
   pDICOMTAG      pTag; 
   L_TCHAR        szUnknown[]=TEXT("Unknown"); 
   L_TCHAR        *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, TEXT("Notice"), MB_OK); 
      } 
   } 
 
   L_DicomFreeDS(hDS); 
   return DICOM_SUCCESS; 
}