LDicomNet::SendCMoveRequest

#include "ltdic.h"

L_INT LDicomNet::SendCMoveRequest(nPresentationID, nMessageID, pszClass, nPriority, pszMoveAE, pDS)

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

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_UINT16 nPriority

The priority level of the message. The Service Class Provider may or may not support priority. Therefore, setting this parameter may or may not have any effect. Possible values are:

Value Meaning
COMMAND_PRIORITY_LOW [0x0002] Low priority message.
COMMAND_PRIORITY_MEDIUM [0x0000] Medium priority message.
COMMAND_PRIORITY_HIGH [0x0001] High priority message.

L_TCHAR * pszMoveAE

Character string that contains the name of the application entity to which to move the data.

LDicomDS *pDS

Pointer to the data set to be moved.

Returns

Value Meaning
0 SUCCESS
>0 An error occurred. Refer to Return Codes.

Comments

Calling this function generates a call to LDicomNet::OnReceiveCMoveRequest on the SCP. The SCP should respond by calling LDicomNet::SendCMoveResponse which will generate a call to LDicomNet::OnReceiveCMoveResponse.

Required DLLs and Libraries

Platforms

Win32, x64

See Also

Functions

Topics

Example

This example sends an C-Move 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
    static void InsertNextElement(LDicomDS *pDicomDS, L_UINT32 nTag); 
     
    L_INT LDicomNet__SendCMoveRequestExample(LMyDicomNet *m_pDicomNet) 
    { 
       L_INT nRet; 
       CString strMsg = TEXT("C-Move\n"); 
        
       //Choose a class to move 
       CString strClassUID = UID_NM_IMAGE_STORAGE; 
        
       //create the data set that encodes the identifier to be matched 
       LDicomDS DicomDS; 
       DicomDS.InitDS(CLASS_UNKNOWN, 0); 
        
       //add the required elements 
       pDICOMTAG pDicomTag = LDicomTag::Find(TAG_QUERY_RETRIEVE_LEVEL); 
       pDICOMELEMENT pElement = DicomDS.InsertElement(  
          NULL,                      //pDICOMELEMENT pNeighbor 
          FALSE,                     //L_BOOL bChild 
          TAG_QUERY_RETRIEVE_LEVEL,  //L_UINT32 nTag 
          pDicomTag->nVR,            //L_UINT16 nVR 
          FALSE,                     //L_BOOL bSequence, 
          0                          //L_UINT32 nIndex 
          ); 
       DicomDS.SetStringValue(pElement, TEXT("PATIENT"), 
        1, DICOM_CHARACTER_SET_DEFAULT); 
        
       InsertNextElement(&DicomDS,TAG_PATIENT_NAME); 
       InsertNextElement(&DicomDS,TAG_PATIENT_ID); 
       InsertNextElement(&DicomDS,TAG_PATIENT_BIRTH_DATE); 
       InsertNextElement(&DicomDS,TAG_PATIENT_SEX); 
       InsertNextElement(&DicomDS, TAG_NUMBER_OF_STUDY_RELATED_INSTANCES); 
        
       //global variable to count results 
       m_pDicomNet->m_FileCount = 0; 
        
       //Get the associate object 
       LDicomAssociate *pDicomAssociate = m_pDicomNet->GetAssociate(); 
        
       //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 
       { 
          L_UINT16 uUniqueID = 99; 
           
          //Choose DICOM AE title of the destination DICOM AE  
          //from which the C-store operations are being performed 
          //This is set by the SetCalling() method of the LDicomAssociateRequest object 
          //before doing a SendAssociateRequest 
          CString strMoveAE = TEXT("LEADtest"); 
           
          m_pDicomNet->m_FileCount = 0;  //used for file name in OnReceiveCStoreRequest event 
     
          //The client requests the server to move the SOP Instance to itself (the client) 
          nRet =m_pDicomNet->SendCMoveRequest( 
             nPresentationID,  
             uUniqueID,  
             (L_TCHAR *)(LPCTSTR)strClassUID,  
             COMMAND_PRIORITY_MEDIUM,  
             (L_TCHAR *)(LPCTSTR)strMoveAE,  
             &DicomDS 
             ); 
          if(nRet > 0) 
             return nRet; 
       } 
       AfxMessageBox(strMsg); 
       //now wait for one or more C-STORE sub-operations and finally the C-Get response 
        
       return DICOM_SUCCESS; 
    } 
     
    static void InsertNextElement(LDicomDS *pDicomDS, L_UINT32 nTag) 
    { 
        pDICOMTAG pDicomTag = LDicomTag::Find(nTag); 
        pDicomDS->InsertElement(  
                               NULL,            //pDICOMELEMENT pNeighbor 
                               FALSE,           //L_BOOL bChild 
                               nTag,            //L_UINT32 nTag 
                               pDicomTag->nVR,  //L_UINT16 nVR 
                               FALSE,           //L_BOOL bSequence, 
                               0                //L_UINT32 nIndex 
                             ); 
    } 
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