/// <summary>
/// Unmarshals and deallocates an OPCHDA_ANNOTATION structure.
/// </summary>
internal static TsCHdaAnnotationValueCollection GetAnnotationValueCollection(OpcRcw.Hda.OPCHDA_ANNOTATION input, bool deallocate)
{
TsCHdaAnnotationValueCollection output = new TsCHdaAnnotationValueCollection();
output.ClientHandle = input.hClient;
DateTime[] timestamps = Utilities.Interop.GetDateTimes(ref input.ftTimeStamps, input.dwNumValues, deallocate);
string[] annotations = Utilities.Interop.GetUnicodeStrings(ref input.szAnnotation, input.dwNumValues, deallocate);
DateTime[] creationTimes = Utilities.Interop.GetDateTimes(ref input.ftAnnotationTime, input.dwNumValues, deallocate);
string[] users = Utilities.Interop.GetUnicodeStrings(ref input.szUser, input.dwNumValues, deallocate);
for (int ii = 0; ii < input.dwNumValues; ii++)
{
TsCHdaAnnotationValue value = new TsCHdaAnnotationValue();
value.Timestamp = timestamps[ii];
value.Annotation = annotations[ii];
value.CreationTime = creationTimes[ii];
value.User = users[ii];
output.Add(value);
}
return(output);
}
/// <summary>
/// Unmarshals and deallocates an array of OPCHDA_ANNOTATION structures.
/// </summary>
internal static TsCHdaAnnotationValueCollection[] GetAnnotationValueCollections(ref IntPtr pInput, int count, bool deallocate)
{
TsCHdaAnnotationValueCollection[] output = null;
if (pInput != IntPtr.Zero && count > 0)
{
output = new TsCHdaAnnotationValueCollection[count];
IntPtr pos = pInput;
for (int ii = 0; ii < count; ii++)
{
output[ii] = GetAnnotationValueCollection(pos, deallocate);
pos = (IntPtr)(pos.ToInt64() + Marshal.SizeOf(typeof(OpcRcw.Hda.OPCHDA_ANNOTATION)));
}
if (deallocate)
{
Marshal.FreeCoTaskMem(pInput);
pInput = IntPtr.Zero;
}
}
return(output);
}
/// <summary>
/// Returns the set of item values stored in the list control.
/// </summary>
public TsCHdaAnnotationValueCollection GetValues()
{
TsCHdaAnnotationValueCollection values = new TsCHdaAnnotationValueCollection();
foreach (ListViewItem listItem in ValuesLV.Items)
{
if (typeof(TsCHdaAnnotationValue).IsInstanceOfType(listItem.Tag))
{
values.Add(listItem.Tag);
}
}
return(values);
}
/// <summary>
/// Unmarshals and deallocates an OPCHDA_ANNOTATION structure.
/// </summary>
internal static TsCHdaAnnotationValueCollection GetAnnotationValueCollection(IntPtr pInput, bool deallocate)
{
TsCHdaAnnotationValueCollection output = null;
if (pInput != IntPtr.Zero)
{
object item = Marshal.PtrToStructure(pInput, typeof(OpcRcw.Hda.OPCHDA_ANNOTATION));
output = GetAnnotationValueCollection((OpcRcw.Hda.OPCHDA_ANNOTATION)item, deallocate);
if (deallocate)
{
Marshal.DestroyStructure(pInput, typeof(OpcRcw.Hda.OPCHDA_ANNOTATION));
}
}
return(output);
}
/// <summary>
/// Initializes the control with a set of items.
/// </summary>
public void Initialize(TsCHdaServer server, TsCHdaAnnotationValueCollection values)
{
m_server = server;
m_item = values;
ValuesLV.Items.Clear();
if (values != null)
{
// add item values to list.
foreach (TsCHdaAnnotationValue value in values)
{
AddListItem(value, -1);
}
// adjust the list view columns to fit the data.
AdjustColumns();
}
}
/// <summary>
/// Called when an asynchronous read annotations request completes.
/// </summary>
public void OnReadAnnotations(
int dwTransactionID,
int hrStatus,
int dwNumItems,
OPCHDA_ANNOTATION[] pAnnotationValues,
int[] phrErrors)
{
try
{
lock (this)
{
// lookup request transaction.
Request request = (Request)m_requests[dwTransactionID];
if (request == null)
{
return;
}
// unmarshal results.
TsCHdaAnnotationValueCollection[] results = new TsCHdaAnnotationValueCollection[pAnnotationValues.Length];
for (int ii = 0; ii < pAnnotationValues.Length; ii++)
{
results[ii] = Interop.GetAnnotationValueCollection(pAnnotationValues[ii], false);
results[ii].ServerHandle = pAnnotationValues[ii].hClient;
results[ii].Result = Technosoftware.DaAeHdaClient.Utilities.Interop.GetResultID(phrErrors[ii]);
}
// invoke callback - remove request if all results arrived.
if (request.InvokeCallback(results))
{
m_requests.Remove(request.RequestID);
}
}
}
catch (Exception exception)
{
HandleException(dwTransactionID, exception);
}
}
