Enables or disables the use of optimized memory when sending files.
#include "ltdic.h"
L_LTDIC_API L_VOID L_DicomEnableOptimizedMemorySend(hNet, bEnabled)
Handle to an existing DICOM Network. This is the handle returned from the L_DicomCreateNet function.
Flag that enables or disables the use of optimized memory when sending files.
Value | Meaning |
---|---|
TRUE | Enables the use of optimized memory when sending large files. |
FALSE | Disables the use of optimized memory when sending large files. |
Value | Meaning |
---|---|
DICOM_SUCCESS | The function was successful. |
>0 | An error occurred. Refer to Return Codes. |
It is possible for the toolkit to allocate large memory buffers when sending a large file to a server. Use this function to control whether to optimize memory usage to the minimum possible.
Note: The security mode (the nMode parameter used when calling L_DicomCreateNet or L_DicomCreateNetExt) must be set to DICOM_SECURE_NONE
in order for this function to work.
Win32, x64, Linux.
#include <memory.h>
L_INT DicomL_DicomEnableOptimizedMemorySendExample(HDICOMNET hNet, HWND hWnd)
{
L_TCHAR * pszClass=NULL;
L_TCHAR * pszInstance=NULL;
L_TCHAR szMsg[200];
L_TCHAR szFilter[100]= TEXT("AllFiles (*.*)\0*.*\0Dicom Files (*.dcm)\0*.dcm\0\0");
L_UCHAR nID;
HDICOMPDU hPDU;
OPENFILENAME OpenFileName;
L_TCHAR szFile[MAX_PATH] = TEXT("\0");
L_INT nRet;
HDICOMDS hDS=NULL;
pDICOMELEMENT pElement=NULL;
OPENDLGPARAMS DlgParams;
/* send a store request to the server */
hPDU = L_DicomGetAssociate(hNet);
/* pick the data set to send */
lstrcpy( szFile, TEXT(""));
memset ( &OpenFileName, 0, sizeof ( OPENFILENAME ) ) ;
memset ( &DlgParams, 0, sizeof ( OPENDLGPARAMS ) ) ;
OpenFileName.lStructSize = sizeof(OPENFILENAME);
OpenFileName.hwndOwner = hWnd;
OpenFileName.lpstrFilter = szFilter;
OpenFileName.lpstrCustomFilter = NULL;
OpenFileName.nMaxCustFilter = 0;
OpenFileName.nFilterIndex = 0;
OpenFileName.lpstrFile = szFile;
OpenFileName.nMaxFile = sizeof(szFile);
OpenFileName.lpstrFileTitle = NULL;
OpenFileName.nMaxFileTitle = 0;
OpenFileName.lpstrInitialDir = NULL;
OpenFileName.lpstrTitle = TEXT("Pick a Dicom Data Set");
OpenFileName.nFileOffset = 0;
OpenFileName.nFileExtension = 0;
OpenFileName.lpstrDefExt = NULL;
OpenFileName.lpfnHook = NULL;
OpenFileName.Flags = 0;
DlgParams.uStructSize = sizeof ( OPENDLGPARAMS ) ;
DlgParams.pfnFileLoadCallback = NULL ;
DlgParams.uDlgFlags = DLG_OPEN_SHOW_PROGRESSIVE |
DLG_OPEN_SHOW_FILEINFO |
DLG_OPEN_SHOW_PREVIEW |
DLG_OPEN_SHOW_DELPAGE |
DLG_OPEN_SHOW_LOADOPTIONS |
DLG_OPEN_LOADBITMAP ;
nRet = L_DlgOpen (hWnd, &OpenFileName, &DlgParams);
if( SUCCESS_DLG_OK == nRet )
{
/* load the data set */
hDS = L_DicomCreateDS(NULL);
nRet = L_DicomLoadDS(hDS, szFile, 0);
if(nRet != DICOM_SUCCESS)
{
MessageBox(NULL, TEXT("Error Loading Data Set!"), TEXT("Error"), MB_OK);
L_DicomFreeDS(hDS);
return nRet;
}
pElement = L_DicomFindFirstElement(hDS, NULL, TAG_SOP_INSTANCE_UID, FALSE);
pszInstance = L_DicomGetStringValue(hDS, pElement, 0, 1);
pElement = L_DicomFindFirstElement(hDS, NULL, TAG_SOP_CLASS_UID, FALSE);
pszClass = L_DicomGetStringValue(hDS, pElement, 0, 1);
/* send the command set */
nID = L_DicomFindAbstract(hPDU, pszClass);
if(nID == 0)
{
wsprintf(szMsg, TEXT("Abstract Syntax %s Not Supported by Association!"), pszClass);
MessageBox(NULL, szMsg, TEXT("Error"), MB_OK);
}
else
{
L_DicomEnableOptimizedMemorySend(hNet, L_TRUE);
/* now, use the high-level method to send the command set */
nRet = L_DicomSendCStoreRequest(hNet, nID, 1, pszClass, pszInstance, COMMAND_PRIORITY_MEDIUM, TEXT(""), 0, hDS);
if (nRet != DICOM_SUCCESS)
{
L_DicomFreeDS(hDS);
return nRet;
}
}
L_DicomFreeDS(hDS);
}
return DICOM_SUCCESS;
}
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