L_DicomSendCFindRequest
#include "ltdic.h"
L_INT EXT_FUNCTION L_DicomSendCFindRequest(hNet, nPresentationID, nMessageID, pszClass, nPriority, hDS)
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HDICOMNET hNet; |
/* a DICOM Network handle */ |
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L_UCHAR nPresentationID; |
/* presentation ID */ |
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L_UINT16 nMessageID; |
/* message ID */ |
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L_CHAR * pszClass; |
/* class type */ |
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L_UINT16 nPriority; |
/* priority of the message */ |
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HDICOMDS hDS; |
/* 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.
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Parameter |
Description | |
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hNet |
A DICOM Network handle to the peer member of the connection. | |
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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. | |
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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. | |
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pszClass |
Class affected by the request. This will be an SOP Class or an SOP MetaClass. | |
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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: | |
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Value |
Meaning |
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COMMAND_PRIORITY_LOW |
[0x0002] Low priority message. |
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COMMAND_PRIORITY_MEDIUM |
[0x0000] Medium priority message. |
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COMMAND_PRIORTY_HIGH |
[0x0001] High priority message. |
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hDS |
Pointer to the data set to be found. | |
Returns
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0 |
SUCCESS |
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>0 |
An error occurred. Refer to Return Codes. |
Comments
Calling this function generates a call to RECEIVECFINDREQUESTCALLBACK on the SCP. The SCP should respond by calling L_DicomSendCFindResponse which will generate a call to RECEIVECFINDRESPONSECALLBACK.
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
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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
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Functions: |
L_DicomSendCFindResponse, RECEIVECFINDREQUESTCALLBACK, RECEIVECFINDRESPONSECALLBACK |
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Topics: |
Example
#include <windowsx.h>
.
.
.
HWND hList; /* handle to list box */
HWND hStudyList; /* handle to list box */
HDICOMNET hNet;
L_INT gnFindType;
L_INT gnFindCount;
#define FIND_TYPE_STUDY 1
#define FIND_TYPE_SERIES 2
#define FIND_TYPE_IMAGE 3
L_VOID TestSendCFind(L_VOID)
{
HDICOMPDU hPDU;
L_UCHAR nID;
HDICOMDS hDS=NULL;
L_CHAR szUID[200];
L_CHAR szMsg[200];
long x;
long lCount;
L_CHAR szFile[L_MAXPATH];
HANDLE hFile=NULL;
pDICOMTAG pTag=NULL;
pDICOMELEMENT pElement=NULL;
/*
this example sends a command that will find all STUDIES on a called AE that
supports the Study Root Query/Retrieve Information Model - FIND SOP Class
The results are stored in a ListBox named StudyList as each result
is received in the NetReceiveCStoreRequest event
*/
/* delete all previous find results */
lCount = ListBox_GetCount(hStudyList);
for(x=0; x<lCount; x++)
{
ListBox_GetText(hStudyList, x, szFile);
hFile = CreateFile(szFile, GENERIC_READ, 0, NULL,
OPEN_EXISTING, FILE_FLAG_DELETE_ON_CLOSE,
NULL);
if(hFile)
CloseHandle(hFile);
}
ListBox_ResetContent(hStudyList);
gnFindType = FIND_TYPE_STUDY; /* global variable used to distingish this find */
/* send a Find request to the server */
hPDU = L_DicomGetAssociate(hNet);
lstrcpy(szUID, UID_STUDY_ROOT_QUERY_FIND);
nID = L_DicomFindAbstract(hPDU, szUID);
if(nID == 0)
{
wsprintf(szMsg, "Abstract Syntax %s Not Supported by Association!", szUID);
MessageBox(NULL, szMsg, "Error", MB_OK);
}
else
{
/* create a find attribute data set */
hDS = L_DicomCreateDS(NULL);
L_DicomInitDS(hDS, CLASS_UNKNOWN, 0);
L_DicomResetDS(hDS);
/* add the required fields for this seach */
pTag = L_DicomFindTag(TAG_QUERY_RETRIEVE_LEVEL);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_QUERY_RETRIEVE_LEVEL, pTag->nVR, FALSE, 0);
/* we are searching at the study level */
L_DicomSetStringValue(hDS, pElement, "STUDY ", 1);
pTag = L_DicomFindTag(TAG_STUDY_DATE);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_STUDY_DATE, pTag->nVR, FALSE, 0);
pTag = L_DicomFindTag(TAG_STUDY_TIME);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_STUDY_TIME, pTag->nVR, FALSE, 0);
pTag = L_DicomFindTag(TAG_ACCESSION_NUMBER);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_ACCESSION_NUMBER, pTag->nVR, FALSE, 0);
pTag = L_DicomFindTag(TAG_PATIENT_NAME);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_PATIENT_NAME, pTag->nVR, FALSE, 0);
pTag = L_DicomFindTag(TAG_PATIENT_ID);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_PATIENT_ID, pTag->nVR, FALSE, 0);
pTag = L_DicomFindTag(TAG_STUDY_ID);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_STUDY_ID, pTag->nVR, FALSE, 0);
pTag = L_DicomFindTag(TAG_STUDY_INSTANCE_UID);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_STUDY_INSTANCE_UID, pTag->nVR, FALSE, 0);
/* optional tags */
pTag = L_DicomFindTag(TAG_STUDY_DESCRIPTION);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_STUDY_DESCRIPTION, pTag->nVR, FALSE, 0);
pTag = L_DicomFindTag(TAG_PATIENT_BIRTH_DATE);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_PATIENT_BIRTH_DATE, pTag->nVR, FALSE, 0);
pTag = L_DicomFindTag(TAG_PATIENT_SEX);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_PATIENT_SEX, pTag->nVR, FALSE, 0);
pTag = L_DicomFindTag(TAG_OTHER_PATIENT_IDS);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_OTHER_PATIENT_IDS, pTag->nVR, FALSE, 0);
pTag = L_DicomFindTag(TAG_NUMBER_OF_STUDY_RELATED_INSTANCES);
pElement = L_DicomInsertElement(hDS, NULL, FALSE, TAG_NUMBER_OF_STUDY_RELATED_IMAGES, pTag->nVR, FALSE, 0);
/* now, send the command set and data set */
gnFindCount = 0; /* global variable to cound results */
L_DicomSendCFindRequest(hNet, nID, 1, szUID, COMMAND_PRIORITY_MEDIUM, hDS);
L_DicomFreeDS(hDS);
}
}