L_DicomGetPrevIOD

#include "Ltdic.h"

L_LTDIC_API pDICOMIOD L_DicomGetPrevIOD(pIOD, bTree)

Returns a pointer to the item in the IOD Structure that immediately precedes the specified item.

Parameters

pDICOMIOD pIOD

Pointer to a DICOMIODstructure that contains an item in the IOD Structure. A pointer to the item in the IOD Structure that immediately precedes this item will be returned.

L_BOOL bTree

Flag that indicates how the IOD Structure will be evaluated. Possible values are:

Value Meaning
TRUE Evaluate the IOD Structure as a tree.
FALSE Evaluate the IOD Structure as a list.

Returns

Value Meaning
!NULL A pointer to a DICOMIODstructure that contains the item in the IOD Structure that immediately precedes the item specified in pIOD.
NULL There is not an item preceding pIOD. (pIOD is the first item in the IOD Structure.)

Comments

If the IOD Structure is evaluated as a tree structure, this function returns the previous item on the same level as pIOD with the same parent as pIOD. Please note that the numbering of the items in this illustration is arbitrary and does not imply order.

image\GetPvTr.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 IOD Structure is evaluated as a list, the previous item in the list is returned. Please note that the numbering of the items in this illustration does indicate the order of the items when the IOD Structure is evaluated as a list.

image\GetPvLst.gif
If the passed pointer points to The function returns a pointer to
Item 1 NULL
Item 15 Item 14
Item 5 Item 4
Item 9 Item 8
Item 22 Item 21
Item 25 Item 24

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

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

Required DLLs and Libraries

Platforms

Win32, x64, Linux.

See Also

Functions

Topics

Example

This example displays in a list-box control all classes from the IOD table

L_INT DicomGetPrevIODExample(HWND hDlg) 
{ 
   pDICOMIOD pIOD; 
 
   pIOD = L_DicomGetLastIOD(NULL, TRUE); 
   while (pIOD != NULL) 
   { 
      SendMessage(hDlg, LB_ADDSTRING, (WPARAM)0, (LPARAM)(LPCTSTR)pIOD->pszName); 
      pIOD = L_DicomGetPrevIOD(pIOD, TRUE); 
   } 
   return DICOM_SUCCESS; 
} 

Help Version 20.0.2019.9.20
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2019 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS DICOM C API Help