L_DicomSendNSetRequest

#include "ltdic.h"

L_LTDIC_API L_INT L_DicomSendNSetRequest(hNet, nPresentationID, nMessageID, pszClass, pszInstance, hDS)

HDICOMNET hNet;	/* a DICOM Network handle */
L_UCHAR nPresentationID;	/* presentation ID */
L_UINT16 nMessageID;	/* message ID */
L_TCHAR * pszClass;	/* class type */
L_TCHAR * pszInstance;	/* instance */
HDICOMDS hDS;	/* data set */

Sends an N-SET-REQ message to a peer member of a connection. This function is available in the PACS Imaging.

Parameter	Description
hNet	A DICOM Network handle to the peer member of the connection.
nPresentationID	Presentation ID. The presentation ID provides information about both the class type of the data and the transfer syntax to use when transferring the data.
nMessageID	Message ID. Each message sent by a member of a connection should have a unique ID. Since a member of a connection may send several messages, this ID allows that member to identify when a specific request has been completed.
pszClass	Class affected by the request. This will be an SOP Class or an SOP MetaClass.
pszInstance	The instance of the class. A server may, for example, have three instances of the Nuclear Medicine Class. This value identifies the data with a specific instance.
hDS	Data set that contains the new information to set.

Returns

DICOM_SUCCESS	The function was successful.
>0	An error occurred. Refer to Return Codes.

Comments

Calling this function generates a call to RECEIVENSETREQUESTCALLBACK on the SCP. The SCP should respond by calling L_DicomSendNSetResponse which will generate a call to RECEIVENSETRESPONSECALLBACK.

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

See Also

Functions:	L_DicomSendNSetResponse, RECEIVENSETREQUESTCALLBACK, RECEIVENSETRESPONSECALLBACK
Topics:	Working with DICOM Network Connections

Example

L_INT DicomSendNSetRequestExample(HDICOMNET hNet)
{
   L_TCHAR szClassUID[200];
   L_TCHAR szInstance[200];
   L_TCHAR szMsg[200];
   HDICOMPDU hPDU;
   L_UCHAR nID;
   L_TCHAR szNewID[200];
   HDICOMDS hDS=NULL;
   pDICOMTAG pTag=NULL;
   pDICOMELEMENT pElement=NULL;
   L_INT nRet;
   
   /* this sample allows you to change the patient id of an SOP Instance */
   
   /* send an N-GET-REQUEST to the server */
   
   /* this sample uses fixed values */
   lstrcpy(szClassUID, UID_SC_IMAGE_STORAGE);
   
   lstrcpy(szInstance, TEXT("998.998.1.19950214.94000.1.102"));
   
   /* new patient id */
   lstrcpy(szNewID, TEXT("123-45-6789"));
   
   /* create the data set that encodes the changed element(s) */
   hDS = L_DicomCreateDS(NULL);
   L_DicomInitDS(hDS, CLASS_UNKNOWN, 0);
   L_DicomResetDS(hDS);
   
   pTag = L_DicomFindTag(TAG_PATIENT_ID);
   pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_PATIENT_ID, pTag->nVR, FALSE, 0);
   if (pElement == NULL)
   {
      L_DicomFreeDS(hDS);
      return DICOM_ERROR_MEMORY;
   }
   L_DicomSetStringValue(hDS, pElement, szNewID, 1, DICOM_CHARACTER_SET_DEFAULT);
   
   hPDU = L_DicomGetAssociate(hNet);
   
   /* now, send a request */
   nID = L_DicomFindAbstract(hPDU, szClassUID);
   if(nID == 0)
   {
      wsprintf(szMsg, TEXT("Abstract Syntax %s Not Supported by Association!"), szClassUID);
      MessageBox(NULL, szMsg, TEXT("Error"), MB_OK);
   }
   else
   {
      nRet = L_DicomSendNSetRequest(hNet, nID, 1, szClassUID, szInstance, hDS);
      if (nRet != DICOM_SUCCESS)
      {
         L_DicomFreeDS(hDS);
         return nRet;
      }
   }
   L_DicomFreeDS(hDS);
   return DICOM_SUCCESS;
}