LDicomNet::SendNActionRequest

Functions

• LDicomNet::SendNActionResponse
• LDicomNet::OnReceiveNActionRequest
• LDicomNet::OnReceiveNActionResponse

Topics

• Working with DICOM Network Connections

Example

This sample sends an N-Action Request to the 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__SendNActionRequestExample(LMyDicomNet *m_pDicomNet) 
   { 
      L_INT nRet; 
      CString strMsg = TEXT("N-Action\n"); 
       
      //Choose a supported Action ID 
      L_UINT16 nAction = 1; 
    
      //Choose an SOP Class to find 
      CString strClassUID = UID_BASIC_FILM_BOX_CLASS; 
       
      //Choose an SOP Instance to modify 
      CString strInstanceUID = TEXT("1.1.1.1"); 
      
      //... 
      //...Create a data set that encodes the Action Arguments (based on value of nAction) 
      //...For this example, add a tag to the Data set so that it is non-empty 
      //... 
      LDicomDS DicomDS; 
      DicomDS.InitDS(CLASS_UNKNOWN, 0); 
      //...Add the action arugments 
    
      pDICOMTAG pDicomTag = LDicomTag::Find(TAG_IMAGE_TYPE); 
      pDICOMELEMENT pElement = DicomDS.InsertElement(  
                              NULL,                      //pDICOMELEMENT pNeighbor 
                              FALSE,                     //L_BOOL bChild 
                              TAG_IMAGE_TYPE,            //L_UINT32 nTag 
                              pDicomTag->nVR,            //L_UINT16 nVR       
                              FALSE,                     //L_BOOL bSequence, 
                              0                          //L_UINT32 nIndex 
                              ); 
    
      UNREFERENCED_PARAMETER(pElement); 
      //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; 
         nRet =m_pDicomNet->SendNActionRequest( nPresentationID,  
                                          uUniqueID,  
                                          (L_TCHAR *)(LPCTSTR)strClassUID,  
                                          (L_TCHAR *)(LPCTSTR)strInstanceUID,  
                                          nAction,  
                                          &DicomDS); 
         if(nRet > 0) 
            return nRet; 
      } 
      AfxMessageBox(strMsg); 
    
      return DICOM_SUCCESS; 
   }