LDicomDS::FindFirstPrivateCreatorDataElement

L_INT LDicomDS_CreatePrivateCreatorDataElementExample(LDicomDS &ds, pDICOMELEMENT pRoot, L_UINT16 uElementGroup) 
{ 
   L_INT nRet = DICOM_SUCCESS; 
   L_UINT32 uTag = 0; 
   TCHAR *pszUniqueID = L"MyPrivateCreatorDataElement"; 
   // We will add some private tags 
   // First see if the Private Creator Data Element already exists -- search by unique ID, ANY group 
   pDICOMELEMENT pPrivateCreatorElement = ds.FindFirstPrivateCreatorDataElement(pRoot, TRUE, pszUniqueID, 0); 
   // If the Private Creator Data Element does not exist, try to create it 
   if (pPrivateCreatorElement == NULL) 
   { 
      nRet = ds.CreatePrivateCreatorDataElement(pRoot, uElementGroup, 0xFF, pszUniqueID, &pPrivateCreatorElement); 
      if (nRet != DICOM_SUCCESS) 
         return nRet; 
      // Private Creator Data Element tag was created successfully 
      // Add it to the DICOM Tag table 
      LDicomTag::Insert( 
      pPrivateCreatorElement->nTag, 
      0xFFFFFFFF, 
      pszUniqueID, 
      pPrivateCreatorElement->nVR, 
      1,1,1 
      ); 
   } 
   // Insert some private elements 
   for (int i = 0; i<5; i++) 
   { 
      nRet = ds.GetNextUnusedPrivateTag(pPrivateCreatorElement, &uTag); 
      if (nRet == DICOM_SUCCESS) 
      { 
         pDICOMELEMENT p = ds.InsertElement(pRoot, FALSE, uTag, VR_IS, FALSE, 0); 
         if (p) 
         { 
            ds.SetLongValue(p, &i, 1); 
         } 
      } 
   } 
   return nRet; 
}