/// <summary>
/// Unmarshals and deallocates a OPCBROWSEELEMENT structures.
/// </summary>
internal static TsCDaBrowseElement GetBrowseElement(IntPtr pInput, bool deallocate)
{
TsCDaBrowseElement output = null;
if (pInput != IntPtr.Zero)
{
OpcRcw.Da.OPCBROWSEELEMENT element = (OpcRcw.Da.OPCBROWSEELEMENT)Marshal.PtrToStructure(pInput, typeof(OpcRcw.Da.OPCBROWSEELEMENT));
output = new TsCDaBrowseElement();
output.Name = element.szName;
output.ItemPath = null;
output.ItemName = element.szItemID;
output.IsItem = ((element.dwFlagValue & OpcRcw.Da.Constants.OPC_BROWSE_ISITEM) != 0);
output.HasChildren = ((element.dwFlagValue & OpcRcw.Da.Constants.OPC_BROWSE_HASCHILDREN) != 0);
output.Properties = GetItemProperties(ref element.ItemProperties, deallocate);
if (deallocate)
{
Marshal.DestroyStructure(pInput, typeof(OpcRcw.Da.OPCBROWSEELEMENT));
}
}
return(output);
}
/// <summary>
/// Allocates and marshals an array of OPCBROWSEELEMENT structures.
/// </summary>
internal static IntPtr GetBrowseElements(TsCDaBrowseElement[] input, bool propertiesRequested)
{
IntPtr output = IntPtr.Zero;
if (input != null && input.Length > 0)
{
output = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(OpcRcw.Da.OPCBROWSEELEMENT)) * input.Length);
IntPtr pos = output;
for (int ii = 0; ii < input.Length; ii++)
{
OpcRcw.Da.OPCBROWSEELEMENT element = GetBrowseElement(input[ii], propertiesRequested);
Marshal.StructureToPtr(element, pos, false);
pos = (IntPtr)(pos.ToInt64() + Marshal.SizeOf(typeof(OpcRcw.Da.OPCBROWSEELEMENT)));
}
}
return(output);
}
/// <summary>
/// Allocates and marshals an OPCBROWSEELEMENT structure.
/// </summary>
internal static OpcRcw.Da.OPCBROWSEELEMENT GetBrowseElement(TsCDaBrowseElement input, bool propertiesRequested)
{
OpcRcw.Da.OPCBROWSEELEMENT output = new OpcRcw.Da.OPCBROWSEELEMENT();
if (input != null)
{
output.szName = input.Name;
output.szItemID = input.ItemName;
output.dwFlagValue = 0;
output.ItemProperties = GetItemProperties(input.Properties);
if (input.IsItem)
{
output.dwFlagValue |= OpcRcw.Da.Constants.OPC_BROWSE_ISITEM;
}
if (input.HasChildren)
{
output.dwFlagValue |= OpcRcw.Da.Constants.OPC_BROWSE_HASCHILDREN;
}
}
return(output);
}
