LDicomNet::SendNCreateRequest (original) (raw)

Summary

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

Syntax

#include "ltdic.h"

L_INT LDicomNet::SendNCreateRequest(nPresentationID, nMessageID, pszClass, pszInstance, pDS)

Parameters

L_UCHAR 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.

L_UINT16 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.

L_TCHAR * pszClass

Class affected by the request. This will be an SOP Class or an SOP MetaClass.

L_TCHAR * 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.

LDicomDS *pDS

Data set with the information to use when creating.

Returns

Comments

Calling this function generates a call to LDicomNet::OnReceiveNCreateRequest on the SCP. The SCP should respond by calling LDicomNet::SendNCreateResponse which will generate a call to LDicomNet::OnReceiveNCreateResponse.

This function creates a new SOP Instance on the specified peer connection. The data set with the new information must be created and filled before calling this function.

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

• LDicomNet::SendNCreateResponse
• LDicomNet::OnReceiveNCreateRequest
• LDicomNet::OnReceiveNCreateResponse

Topics

• Working with DICOM Network Connections

Example

This example sends an N-Create Request to a server
In this example:

1. LMyDicomNet is a class derived from LDicomNet
2. LMyDicomNet has the following member variables:
   m_nClientOrServer: can be (STATUS_NONE, STATUS_SERVER, STATUS_CLIENT)
   identifies the LMyDicomNet object as a server or a client
   m_nDataCommand: can be (COMMAND_C_MOVE,COMMAND_C_GET)
   set so the server knows how a C-Store Response was generated
3. m_pDicomNet points to a valid LMyDicomNet object
   LMyDicomNet *m_pDicomNet
4. A connection exists between client and server
5. An association exists between the client and server
   L_INT LDicomNet__SendNCreateRequestExample(LMyDicomNet *m_pDicomNet)
{
L_INT nRet;
CString strMsg = TEXT("N-Create\n");

//Get the associate object
LDicomAssociate *pDicomAssociate = m_pDicomNet->GetAssociate();

//Choose an SOP Class to create--in this example, choose UID_SC_IMAGE_STORAGE
CString strClassUID = UID_SC_IMAGE_STORAGE;

//Choose an SOP Instance to create
CString strInstanceUID = TEXT("1.2.840.113619.2.30.1.1762288927.1489.906240296.255");

//Is class supported in the assocation?
L_UCHAR nPresentationID = pDicomAssociate->FindAbstract((L_TCHAR *)(LPCTSTR)strClassUID);

//nPresentationID must be odd--0 indicates failure
if (nPresentationID==0)
{
CString strTmp;

strTmp.Format(TEXT("Abstract Syntax[%s] Not Included in the Association"), strClassUID);
strMsg = strMsg + strTmp;
}
else
//success
{
//Here you would normally construct a data set containing the attributes, values for the new SOP instance
//For this sample, pick a dicom file to send as the data set
LDicomDS DicomDS;
L_UINT16 uUniqueID = 99;

nRet =DicomDS.LoadDS(MAKE_IMAGE_PATH(TEXT("IMAGE1.dcm")),0);
if(nRet > 0)
return nRet;
nRet =m_pDicomNet->SendNCreateRequest( nPresentationID,
uUniqueID,
(L_TCHAR *)(LPCTSTR)strClassUID,
(L_TCHAR *)(LPCTSTR)strInstanceUID,
&DicomDS);
if(nRet > 0)
return nRet;
}
AfxMessageBox(strMsg);

return DICOM_SUCCESS;
}