public static ComObject ObjectToComObject(object rcw)
{
Debug.Assert(ComObject.IsComObject(rcw));
// Marshal.Get/SetComObjectData has a LinkDemand for UnmanagedCode which will turn into
// a full demand. We could avoid this by making this method SecurityCritical
object data = Marshal.GetComObjectData(rcw, _ComObjectInfoKey);
if (data != null)
{
return((ComObject)data);
}
lock (_ComObjectInfoKey) {
data = Marshal.GetComObjectData(rcw, _ComObjectInfoKey);
if (data != null)
{
return((ComObject)data);
}
ComObject comObjectInfo = CreateComObject(rcw);
if (!Marshal.SetComObjectData(rcw, _ComObjectInfoKey, comObjectInfo))
{
throw Error.SetComObjectDataFailed();
}
return(comObjectInfo);
}
}
/// <summary>
/// Determines if an object is a COM object.
/// </summary>
/// <param name="value">The object to test.</param>
/// <returns>true if the object is a COM object, false otherwise.</returns>
public static bool IsComObject(object value)
{
return(ComObject.IsComObject(value));
}
internal ComObject(object rcw)
{
Debug.Assert(ComObject.IsComObject(rcw));
_rcw = rcw;
}