Value	Meaning
!NULL	A pointer to a DICOMIOD structure that contains the item in the IOD Structure that is the root of the item specified in pIOD.
NULL	The IOD Structure is empty or pIOD is NULL.

Comments

The root is the Level 0 ancestor of pIOD. If pIOD points to an item on Level 0, a pointer to that same item will be returned.

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

$image\GetRoot.gif$

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

The following functions will also help you navigate the IOD Structure:

LDicomIOD::GetFirst
LDicomIOD::GetLast
LDicomIOD::GetNext
LDicomIOD::GetParent
LDicomIOD::GetChild

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

Example

This example displays the root’s name of an item.

L_INT LDicomIOD_GetRootExample() 
{ 
   pDICOMIOD   pRoot; 
   pDICOMIOD   pElement; 
 
   pElement = LDicomIOD::Find(NULL, TAG_PATIENT_NAME, IOD_TYPE_ELEMENT, FALSE); 
   if (pElement != NULL) 
   { 
      pRoot = LDicomIOD::GetRoot(pElement); 
      ::MessageBox(NULL, pRoot->pszName, TEXT("Notice"), MB_OK); 
   } 
 
   return DICOM_SUCCESS; 
}