L_DicomSendCGetResponse

Summary

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

Syntax

L_LTDIC_API L_INT L_DicomSendCGetResponse(hNet, nPresentationID, nMessageID, pszClass, nStatus, nRemaining, nCompleted, nFailed, nWarning, hDS)

Parameters

HDICOMNET hNet

A DICOM Network handle to the peer member of the connection.

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 nStatus

The status of the original request. For a list of possible values, refer to Status Constants.

L_UINT16 nRemaining

Number of remaining instances to search.

L_UINT16 nCompleted

Number of instances searched.

L_UINT16 nFailed

Number of instances that failed the search.

L_UINT16 nWarning

Number of instances in which warnings occurred.

HDICOMDS hDS

Pointer to the data set that contains the information retrieved as a result of the call to L_DicomSendCGetRequest.

Returns

Comments

L_DicomSendCGetResponse is sent by the SCP in response to an L_DicomSendCGetRequest call placed by an SCU. This generates a call to RECEIVECGETRESPONSECALLBACK on the SCU.

As an example, suppose an SCU requests an SCP to search all CT class instances for specific data. If the SCP has three CT class instances present, it must search all three instances for the required data. During the search, L_DicomSendCGetResponse may be called multiple times. The table below gives examples of possible parameter values for the calls made to L_DicomSendCGetResponse during the search:

After the first instance is searched, there are 2 remaining instances to search (nRemaining), there is 1 instance that has been completed (nCompleted), no instances have failed the search (nFailed), and there are no warnings(nWarning).

After the second instance is searched, there is 1 remaining instance to search (nRemaining), there are 2 instances that have been completed (nCompleted), 1 instance has failed the search (nFailed), and there is one warning (nWarning).

After the last instance has been searched, there are 0 remaining instances to search (nRemaining), there are 3 instances that have been completed (nCompleted), 1 instance has failed the search (nFailed), and there is one warning (nWarning).

The instance that failed may have failed because one data element you were searching for was not in the instance. For example, you may have included "Patient Birth Date" in the elements to search for and one instance did not include "Patient Birth Date".

Information about the warning may be found in the data set that is returned.

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_DicomSendCGetRequest
• RECEIVECGETRESPONSECALLBACK
• RECEIVECGETREQUESTCALLBACK

Topics

• Working with DICOM Network Connections

Example

#include <windowsx.h> 
 
static HWND hList; /* handle to list box */ 
 
L_VOID EXT_CALLBACK OnReceiveCStoreResponse(HDICOMNET hNet, L_UCHAR nPresentationID, L_UINT16 nMessageID, L_TCHAR *pszClass, L_TCHAR *pszInstance, L_UINT16 nStatus, L_VOID *pUserData) 
{ 
   UNREFERENCED_PARAMETER(pUserData); 
   L_TCHAR szMsg[800]; 
   L_INT nRet; 
 
   ListBox_AddString(hList, TEXT("Command Set - C-STORE-RESPONSE")); 
   wsprintf(szMsg, TEXT("     Presentation ID: %d"), nPresentationID); 
   ListBox_AddString(hList, szMsg); 
   wsprintf(szMsg, TEXT("     Message ID: %d"), nMessageID); 
   ListBox_AddString(hList, szMsg); 
   wsprintf(szMsg, TEXT("     Affected SOP Class: %s"), pszClass); 
   ListBox_AddString(hList, szMsg); 
   wsprintf(szMsg, TEXT("     Affected SOP Instance: %s"), pszInstance); 
   ListBox_AddString(hList, szMsg); 
   wsprintf(szMsg, TEXT("     Status: %d"), nStatus); 
   ListBox_AddString(hList, szMsg); 
 
   /* use high-level method to send a response */ 
   nRet = L_DicomSendCGetResponse(hNet, nPresentationID, nMessageID, pszClass, COMMAND_STATUS_SUCCESS, 0, 1, 0, 0, 0); 
   if (nRet != DICOM_SUCCESS) 
      MessageBox(NULL, TEXT("Error Inside Callback Function"), TEXT("OnReceiveCStoreResponse"), MB_OK); 
}