Shutdown Method (original) (raw)
Summary
Shuts down the LEADTOOLS DICOM DLL.
Syntax
public static void Shutdown() public:
static void Shutdown();
Example
This is a comprehensive sample that shows how to process a DICOM C-Get operation on both the SCP (server) and the SCU (client) sides.
using Leadtools;
using Leadtools.Dicom;
[StructLayout(LayoutKind.Sequential)]
public struct MSG
{
public IntPtr hwnd;
public uint message;
public IntPtr wParam;
public IntPtr lParam;
public uint time;
public System.Drawing.Point p;
}
public enum WaitReturn
{
Complete,
Timeout,
}
class Utils
{
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool PeekMessage(out MSG lpMsg, IntPtr hWnd,
uint wMsgFilterMin, uint wMsgFilterMax,
uint wRemoveMsg);
[DllImport("user32.dll")]
static extern bool TranslateMessage([In] ref MSG lpMsg);
[DllImport("user32.dll")]
static extern IntPtr DispatchMessage([In] ref MSG lpmsg);
const uint PM_REMOVE = 1;
public static WaitReturn WaitForComplete(double mill, WaitHandle wh)
{
TimeSpan goal = new TimeSpan(DateTime.Now.AddMilliseconds(mill).Ticks);
do
{
MSG msg = new MSG();
if (PeekMessage(out msg, IntPtr.Zero, 0, 0, PM_REMOVE))
{
TranslateMessage(ref msg);
DispatchMessage(ref msg);
}
if (wh.WaitOne(new TimeSpan(0, 0, 0), false))
{
return WaitReturn.Complete;
}
if (goal.CompareTo(new TimeSpan(DateTime.Now.Ticks)) < 0)
{
return WaitReturn.Timeout;
}
} while (true);
}
}
class Client : DicomNet
{
DicomExceptionCode _LastError = DicomExceptionCode.Success;
AutoResetEvent waitEvent = new AutoResetEvent(false);
public Client()
: base(null, DicomNetSecurityMode.None)
{
}
public DicomExceptionCode LastError
{
get
{
return _LastError;
}
}
public bool Wait()
{
WaitReturn ret;
_LastError = DicomExceptionCode.Success;
ret = Utils.WaitForComplete((5 * 60) * 1000, waitEvent);
return (ret == WaitReturn.Complete);
}
protected override void OnConnect(DicomExceptionCode error)
{
_LastError = error;
waitEvent.Set();
}
protected override void OnReceiveAssociateAccept(DicomAssociate association)
{
waitEvent.Set();
}
protected override void OnReceiveCGetResponse(byte presentationID, int messageID, string affectedClass, DicomCommandStatusType status, int remaining, int completed, int failed, int warning, DicomDataSet dataSet)
{
StackTrace st = new StackTrace();
Debug.WriteLine(st.GetFrame(0).GetMethod().DeclaringType.Name +
":" + st.GetFrame(0).GetMethod().Name);
Debug.Assert(messageID == 1, "Invalid message id. Should be 1");
Debug.Assert(affectedClass == DicomUidType.PatientRootQueryGet, "Affected class should be PatientRootQueryMove: " + DicomUidType.PatientRootQueryMove);
Debug.Assert(status == DicomCommandStatusType.Success, "Status should be success");
Debug.Assert(remaining == 0, "Remaining should be 0");
Debug.Assert(completed == 1, "Completed should be 1");
Debug.Assert(failed == 0, "Failed should be 0");
Debug.Assert(warning == 0, "Warning should be 0");
waitEvent.Set();
}
}
class ServerConnection : DicomNet
{
public ServerConnection()
: base(null, DicomNetSecurityMode.None)
{
}
protected override void OnReceiveAssociateRequest(DicomAssociate association)
{
DicomAssociate retAssociation = new DicomAssociate(false);
Debug.Assert(association.Called == "ServerTest", "Called AETitle should be ServerTest");
Debug.Assert(association.Calling == "ClientTest", "Calling AETitle should be ClientTest");
Debug.Assert(association.ImplementClass == "1.2.840.114257.1", "Implementation class should be 1.2.840.114257.1");
Debug.Assert(association.ImplementationVersionName == "1", "Implementation version should be 1");
Debug.Assert(association.MaxLength == 0x100000, "Max length should be 0x100000");
Debug.Assert(association.GetAbstract(1) == DicomUidType.VerificationClass, "Presentation index 1 should be " + DicomUidType.VerificationClass);
Debug.Assert(association.GetTransfer(1, 0) == DicomUidType.ImplicitVRLittleEndian, "Abstract Syntax (1,0) should be " + DicomUidType.ImplicitVRLittleEndian);
//
// Build our Association Accept
//
retAssociation.Called = association.Called;
retAssociation.Calling = association.Calling;
retAssociation.ImplementClass = association.ImplementClass;
retAssociation.ImplementationVersionName = association.ImplementationVersionName;
for (int x = 0; x < association.PresentationContextCount; x++)
{
byte id = association.GetPresentationContextID(x);
string abSyntax = association.GetAbstract(id);
string trSyntax = DicomUidType.ImplicitVRLittleEndian;
retAssociation.AddPresentationContext(id, 0, abSyntax);
if (association.GetTransferCount(id) > 0)
{
trSyntax = association.GetTransfer(id, 0);
}
retAssociation.AddTransfer(id, trSyntax);
}
SendAssociateAccept(retAssociation);
}
protected override void OnReceiveCGetRequest(byte presentationID, int messageID, string affectedClass, DicomCommandPriorityType priority, DicomDataSet dataSet)
{
DicomElement element;
StackTrace st = new StackTrace();
Debug.WriteLine(st.GetFrame(0).GetMethod().DeclaringType.Name +
":" + st.GetFrame(0).GetMethod().Name);
Debug.Assert(dataSet != null, "Dataset should not be null");
Debug.Assert(priority == DicomCommandPriorityType.Medium, "Priority should be medium");
//
// Check dataset
//
element = dataSet.FindFirstElement(null, DicomTag.QueryRetrieveLevel, true);
Debug.Assert(element != null, "Element (QueryRetrieveLevel) should not be null");
Debug.Assert(dataSet.GetStringValue(element, 0) == "PATIENT", "QueryRetrieveLevel should be PATIENT");
element = dataSet.FindFirstElement(null, DicomTag.PatientName, true);
Debug.Assert(element != null, "Element (PatientName) should not be null");
Debug.Assert(dataSet.GetStringValue(element, 0) == "TEST", "PatientName should be TEST");
SendCGetResponse(presentationID, messageID, affectedClass, DicomCommandStatusType.Success, 0, 1, 0, 0, dataSet);
}
}
class Server : DicomNet
{
ServerConnection client;
public Server()
: base(null, DicomNetSecurityMode.None)
{
}
protected override void OnAccept(DicomExceptionCode error)
{
client = new ServerConnection();
Accept(client);
}
}
public void SendCGetRequestSample()
{
DicomEngine.Startup();
DicomNet.Startup();
using (Server server = new Server())
{
using (Client client = new Client())
{
//
// Connect to server
//
server.Listen("127.0.0.1", 104, 1); // start server
client.Connect(null, 1000, "127.0.0.1", 104); // connect to server
if (!client.Wait()) // wait for connection to finish
{
Debug.Fail("Connection timed out");
}
Debug.Assert(client.LastError == DicomExceptionCode.Success, "Connection failed");
Debug.Assert(client.IsConnected(), "Client not connected");
//
// Send associate request
//
DicomAssociate associate = new DicomAssociate(true);
associate.Called = "ServerTest";
associate.Calling = "ClientTest";
associate.ImplementClass = "1.2.840.114257.1";
associate.ImplementationVersionName = "1";
associate.MaxLength = 0x100000;
associate.AddPresentationContext(1, 0, DicomUidType.VerificationClass);
associate.AddTransfer(1, DicomUidType.ImplicitVRLittleEndian);
associate.AddPresentationContext(3, 0, DicomUidType.PatientRootQueryGet);
associate.AddTransfer(3, DicomUidType.ImplicitVRLittleEndian);
client.SendAssociateRequest(associate);
if (!client.Wait()) // wait for connection to finish
{
Debug.Fail("SendAssociateRequest timed out");
}
byte pid = client.Association.FindAbstract(DicomUidType.PatientRootQueryGet);
DicomDataSet ds = new DicomDataSet();
DicomElement element;
//
// Set up the get parameters
//
ds.Reset();
ds.Initialize(DicomClassType.PatientRootQueryPatient, DicomDataSetInitializeType.ExplicitVRLittleEndian);
element = ds.FindFirstElement(null, DicomTag.QueryRetrieveLevel, true);
if (element == null)
{
element = ds.InsertElement(null, false, DicomTag.QueryRetrieveLevel, DicomVRType.UN, false, 0);
}
ds.SetStringValue(element, "PATIENT", DicomCharacterSetType.Default);
element = ds.FindFirstElement(null, DicomTag.PatientName, true);
if (element == null)
{
element = ds.InsertElement(null, false, DicomTag.PatientName, DicomVRType.UN, false, 0);
}
ds.SetStringValue(element, "TEST", DicomCharacterSetType.Default);
client.SendCGetRequest(pid, 1, DicomUidType.PatientRootQueryGet, DicomCommandPriorityType.Medium, ds);
if (!client.Wait()) // wait for CGet to finish
{
Debug.Fail("SendCGetRequest timed out");
}
client.CloseForced(true);
}
server.CloseForced(true);
}
DicomEngine.Shutdown();
DicomNet.Shutdown();
}