Hi,

Two problems here:

1) The documentation is very sparse on this method, and the parameters and return type are not documented at all
http://www.freepascal.org/docs-html/rtl/classes/readcomponentres.html

2) What's the point of including a "delphi compatibility" method if it isn't compatible with Delphi at all! In fact, that method (and its similar named friends) aren't implemented at all in FPC. Having such a fake and broken method in FPC serves NO purpose at all, and can just cause troubles when porting Delphi code to FPC (as I have just noticed). FPC gave no warning that the said method isn't actually implemented - I would much rather have had the compiler tell me that that method is not defined, which means I could have fixed my code easily without hunting for an unknown bug for hours.

My recommendation:
If they are too specific to Win32 (as the code comment in FPC suggests), and they are not going to be implemented in FPC correctly, then rather remove those methods from the RTL. Having a empty implementation, giving a false sense of delphi support, is far worse!