/// <summary>
/// Returns parent library id
/// </summary>
/// <param name="value">core to use</param>
/// <param name="comProxy">new created proxy</param>
/// <returns>parent library/component id</returns>
internal static Guid GetParentLibraryGuid(this Core value, object comProxy)
{
if (null == comProxy)
{
throw new ArgumentNullException();
}
IDispatch dispatcher = comProxy as IDispatch;
if (null == dispatcher)
{
return(Guid.Empty);
}
COMTypes.ITypeInfo typeInfo = dispatcher.GetTypeInfo(0, 0);
COMTypes.ITypeLib parentTypeLib = null;
Guid typeGuid = typeInfo.GetTypeGuid();
Guid parentGuid = Guid.Empty;
if (!value.HostCache.TryGetValue(typeGuid, out parentGuid))
{
int i = 0;
typeInfo.GetContainingTypeLib(out parentTypeLib, out i);
IntPtr attributesPointer = IntPtr.Zero;
parentTypeLib.GetLibAttr(out attributesPointer);
COMTypes.TYPELIBATTR attributes =
(COMTypes.TYPELIBATTR)Marshal.PtrToStructure(attributesPointer,
typeof(COMTypes.TYPELIBATTR));
parentGuid = attributes.guid;
parentTypeLib.ReleaseTLibAttr(attributesPointer);
Marshal.ReleaseComObject(parentTypeLib);
value.HostCache.Add(typeGuid, parentGuid);
}
Marshal.ReleaseComObject(typeInfo);
return(parentGuid);
}
/// <summary>
/// Get type id from IDispatch GetTypeInfo
/// </summary>
/// <param name="comProxy">target proxy</param>
/// <returns>type id</returns>
internal static Guid TypeGuid(this object comProxy)
{
Guid typeGuid = Guid.Empty;
if (null == comProxy)
{
throw new ArgumentNullException();
}
IDispatch dispatcher = comProxy as IDispatch;
if (null == dispatcher)
{
throw new IDispatchNotImplementedException();
}
COMTypes.ITypeInfo typeInfo = dispatcher.GetTypeInfo();
typeGuid = typeInfo.GetTypeGuid();
Marshal.ReleaseComObject(typeInfo);
return(typeGuid);
}
