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, Linux.

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; 
} 

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