LDicomNet::SendCFindRequest
#include "ltdic.h"
L_INT LDicomNet::SendCFindRequest(nPresentationID, nMessageID, pszClass, nPriority, pDS)
L_UCHAR nPresentationID; |
/* presentation ID */ |
L_UINT16 nMessageID; |
/* message ID */ |
L_CHAR * pszClass; |
/* class type */ |
L_UINT16 nPriority; |
/* priority of the message */ |
LDicomDS *pDS; |
/* data set to be found */ |
Sends a C-FIND-REQ message to a peer member of a connection. This function is available in the Medical Suite 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_PRIORTY_HIGH |
[0x0001] High priority message. |
pDS |
Pointer to the data set to be found. |
Returns
0 |
SUCCESS |
>0 |
An error occurred. Refer to Return Codes. |
Comments
Calling this function generates a call to LDicomNet::OnReceiveCFindRequest on the SCP. The SCP should respond by calling LDicomNet::SendCFindResponse which will generate a call to LDicomNet::OnReceiveCFindResponse.
You must create a data set and insert elements corresponding to the data you wish to find. A pointer to this data set is then passed as a parameter to 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 |
See Also
Functions: |
LDicomNet::SendCFindResponse, LDicomNet::OnReceiveCFindRequest, LDicomNet::OnReceiveCFindResponse |
Topics: |
Example
{
//This example sends a C-Find command that will find all STUDIES on a called AE
//that support the Study Root Query/Retrieve Information Model - FIND SOP Class
//The results are displayed as each result s received in the NetReceiveCStoreRequest event
//
//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
CString strMsg = "C-Find\n";
//Get the associate object
LDicomAssociate *pDicomAssociate = m_pDicomNet->GetAssociate();
//Choose an SOP Class to find--in this example, choose UID_SC_IMAGE_STORAGE
CString strClassUID = UID_STUDY_ROOT_QUERY_FIND;
//Is class supported in the assocation?
L_UCHAR nPresentationID = pDicomAssociate->FindAbstract((L_CHAR *)(LPCTSTR)strClassUID);
//nPresentationID must be odd--0 indicates failure
if (nPresentationID==0)
{
CString strTmp;
strTmp.Format("Abstract Syntax[%s] Not Included in the Association", strClassUID);
strMsg = strMsg + strTmp;
}
else
//success
{
//create a find attribute data set
LDicomDS DicomDS;
DicomDS.InitDS(CLASS_UNKNOWN, 0);
//add the required fields for this seach
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, "STUDY", 1);
InsertNextElement(&DicomDS, TAG_STUDY_DATE);
InsertNextElement(&DicomDS, TAG_STUDY_TIME);
InsertNextElement(&DicomDS, TAG_ACCESSION_NUMBER);
InsertNextElement(&DicomDS, TAG_PATIENT_NAME);
InsertNextElement(&DicomDS, TAG_PATIENT_ID);
InsertNextElement(&DicomDS, TAG_STUDY_ID);
InsertNextElement(&DicomDS, TAG_STUDY_INSTANCE_UID);
//optional tags
InsertNextElement(&DicomDS, TAG_STUDY_DESCRIPTION);
InsertNextElement(&DicomDS, TAG_PATIENT_BIRTH_DATE);
InsertNextElement(&DicomDS, TAG_PATIENT_SEX);
InsertNextElement(&DicomDS, TAG_OTHER_PATIENT_IDS);
InsertNextElement(&DicomDS, TAG_PATIENT_BIRTH_DATE);
InsertNextElement(&DicomDS, TAG_ADDITIONAL_PATIENT_HISTORY);
InsertNextElement(&DicomDS, TAG_NUMBER_OF_STUDY_RELATED_INSTANCES);
//global variable to count results
m_pDicomNet->m_FileCount = 0;
L_UINT16 uUniqueID = 99;
m_pDicomNet->SendCFindRequest(nPresentationID,
uUniqueID,
(L_CHAR *)(LPCTSTR)strClassUID,
COMMAND_PRIORITY_MEDIUM,
&DicomDS
);
strMsg = strMsg + "SendCFindRequest\n";
}
AfxMessageBox(strMsg);
}
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
);
}