L_DicomGetLong64Value

#include "Ltdic.h"

L_LTDIC_API L_UINT32 L_DicomGetLong64Value(hDS, pElement, pValue, nIndex, nCount)

Returns a pointer to a long value, stored in the Value Field, of the specified element.

Returns

Comments

If you have more than one value stored in the Value Field of the specified Data Element, you can retrieve one or more of those elements. For example, if the Value Field of the specified Data Element contains three long values, and you are only interested in retrieving the last two long values, set nIndex to 1 and nCount to 2. This tells the function to retrieve the long values starting at position 1 (the index is zero based) and retrieve two values. Therefore you would retrieve the values in positions 1 and 2 in the Value Field.

You are responsible for passing in an array of the proper size for pValue.  For example, if you want to retrieve three values, you should declare (or allocate) an array of this size to pass as the pValue parameter.

This function can be called only if the Value Representation of the Data Element is VR_IS. For more information about Value Representations, refer to Default Value Representation Table.

Required DLLs and Libraries

Platforms

Win32, x64, Linux.

L_VOID DicomGetLong64ValueExample() 
{ 
   HDICOMDS hDS = L_DicomCreateDS(NULL); 
   if (hDS == NULL) 
      return; 
   L_DicomInitDS(hDS, CLASS_CT_IMAGE_STORAGE, 0); 
   pDICOMELEMENT pElement = L_DicomFindFirstElement(hDS, NULL, TAG_INSTANCE_NUMBER, TRUE); 
   if (pElement == NULL) 
      return; 
   // Set some values 
   L_INT32 nValues[] = {123, 234, 345}; 
   L_DicomSetLongValue(hDS, pElement, nValues, 3); 
   // Ret rieve as 64 bit values 
   L_UINT32 uCount = L_DicomGetCountValue(hDS, pElement); 
   if (uCount == 0) 
      return; 
   L_INT64 *n64Values = new L_INT64[uCount]; 
   if (n64Values == NULL) 
      return; 
   L_DicomGetLong64Value(hDS, pElement, n64Values, 0, uCount); 
   for (L_UINT32 i=0; i<uCount; i++) 
   { 
      L_TCHAR szMsg[200]; 
      wsprintf(szMsg, TEXT("%d: %d\n"), i, n64Values[i]); 
      OutputDebugString(szMsg); 
   } 
   // Free the dataset 
   delete n64Values; 
   L_DicomFreeDS(hDS); 
}