/// <summary>
/// Allocates and marshals an array of OPCITEMPROPERTIES structures.
/// </summary>
internal static IntPtr GetItemPropertyCollections(TsCDaItemPropertyCollection[] input)
{
IntPtr output = IntPtr.Zero;
if (input != null && input.Length > 0)
{
output = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(OpcRcw.Da.OPCITEMPROPERTIES)) * input.Length);
IntPtr pos = output;
for (int ii = 0; ii < input.Length; ii++)
{
OpcRcw.Da.OPCITEMPROPERTIES properties = new OpcRcw.Da.OPCITEMPROPERTIES();
if (input[ii].Count > 0)
{
properties = GetItemProperties((TsCDaItemProperty[])input[ii].ToArray(typeof(TsCDaItemProperty)));
}
properties.hrErrorID = Technosoftware.DaAeHdaClient.Com.Interop.GetResultID(input[ii].Result);
Marshal.StructureToPtr(properties, pos, false);
pos = (IntPtr)(pos.ToInt64() + Marshal.SizeOf(typeof(OpcRcw.Da.OPCITEMPROPERTIES)));
}
}
return(output);
}
/// <summary>
/// Unmarshals and deallocates a OPCITEMPROPERTIES structures.
/// </summary>
internal static TsCDaItemProperty[] GetItemProperties(ref OpcRcw.Da.OPCITEMPROPERTIES input, bool deallocate)
{
TsCDaItemProperty[] output = null;
if (input.dwNumProperties > 0)
{
output = new TsCDaItemProperty[input.dwNumProperties];
IntPtr pos = input.pItemProperties;
for (int ii = 0; ii < output.Length; ii++)
{
try
{
output[ii] = GetItemProperty(pos, deallocate);
}
catch (Exception e)
{
output[ii] = new TsCDaItemProperty();
output[ii].Description = e.Message;
output[ii].Result = OpcResult.E_FAIL;
}
pos = (IntPtr)(pos.ToInt64() + Marshal.SizeOf(typeof(OpcRcw.Da.OPCITEMPROPERTY)));
}
if (deallocate)
{
Marshal.FreeCoTaskMem(input.pItemProperties);
input.pItemProperties = IntPtr.Zero;
}
}
return(output);
}
/// <summary>
/// Unmarshals and deallocates an array of OPCITEMPROPERTIES structures.
/// </summary>
internal static TsCDaItemPropertyCollection[] GetItemPropertyCollections(ref IntPtr pInput, int count, bool deallocate)
{
TsCDaItemPropertyCollection[] output = null;
if (pInput != IntPtr.Zero && count > 0)
{
output = new TsCDaItemPropertyCollection[count];
IntPtr pos = pInput;
for (int ii = 0; ii < count; ii++)
{
OpcRcw.Da.OPCITEMPROPERTIES list = (OpcRcw.Da.OPCITEMPROPERTIES)Marshal.PtrToStructure(pos, typeof(OpcRcw.Da.OPCITEMPROPERTIES));
output[ii] = new TsCDaItemPropertyCollection();
output[ii].ItemPath = null;
output[ii].ItemName = null;
output[ii].Result = Technosoftware.DaAeHdaClient.Com.Interop.GetResultID(list.hrErrorID);
TsCDaItemProperty[] properties = GetItemProperties(ref list, deallocate);
if (properties != null)
{
output[ii].AddRange(properties);
}
if (deallocate)
{
Marshal.DestroyStructure(pos, typeof(OpcRcw.Da.OPCITEMPROPERTIES));
}
pos = (IntPtr)(pos.ToInt64() + Marshal.SizeOf(typeof(OpcRcw.Da.OPCITEMPROPERTIES)));
}
if (deallocate)
{
Marshal.FreeCoTaskMem(pInput);
pInput = IntPtr.Zero;
}
}
return(output);
}
/// <summary>
/// Allocates and marshals an array of OPCITEMPROPERTIES structures.
/// </summary>
internal static OpcRcw.Da.OPCITEMPROPERTIES GetItemProperties(TsCDaItemProperty[] input)
{
OpcRcw.Da.OPCITEMPROPERTIES output = new OpcRcw.Da.OPCITEMPROPERTIES();
if (input != null && input.Length > 0)
{
output.hrErrorID = Result.S_OK;
output.dwReserved = 0;
output.dwNumProperties = input.Length;
output.pItemProperties = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(OpcRcw.Da.OPCITEMPROPERTY)) * input.Length);
bool error = false;
IntPtr pos = output.pItemProperties;
for (int ii = 0; ii < input.Length; ii++)
{
OpcRcw.Da.OPCITEMPROPERTY property = GetItemProperty(input[ii]);
Marshal.StructureToPtr(property, pos, false);
pos = (IntPtr)(pos.ToInt64() + Marshal.SizeOf(typeof(OpcRcw.Da.OPCITEMPROPERTY)));
if (input[ii].Result.Failed())
{
error = true;
}
}
// set flag indicating one or more properties contained errors.
if (error)
{
output.hrErrorID = Result.S_FALSE;
}
}
return(output);
}
