LDicomNet::SendCMoveRequest

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#include "ltdic.h"

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

L_UCHAR nPresentationID;	/* presentation ID */
L_UINT16 nMessageID;	/* message ID */
L_TCHAR * pszClass;	/* class type */
L_UINT16 nPriority;	/* priority of the message */
L_TCHAR * pszMoveAE;	/* name of the application entity */
LDicomDS *pDS;	/* data set to be moved */

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

Parameter	Description
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.
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.
pszMoveAE	Character string that contains the name of the application entity to which to move the data.
pDS	Pointer to the data set to be moved.

Returns

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

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::SendCMoveeResponse, LDicomNet::SendCStoreRequest, LDicomNet::OnReceiveCMoveRequest, LDicomNet::OnReceiveCMoveResponse, LDicomNet::OnReceiveCStoreRequest, LDicomNet::OnReceiveCStoreResponse
Topics:	Working with DICOM Network Connections

Example

static void InsertNextElement(LDicomDS *pDicomDS, L_UINT32 nTag);
L_INT LDicomNet__SendCMoveRequestExample(LMyDicomNet *m_pDicomNet)
{
   //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)
   //                           identifieds 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 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
                         );
}