[lazarus] Patch for win32 : GetRelativePosition

[Karl Brandt]

Mattias Gaertner wrote:

>>What do you think about using Is and As?
> 
> 
> They are fast enough for messages. There should be only a few thousand
> messages per second. If there are more, then the application is not very
> optimized and the IS and AS are secondary. Of course you should not use IS
> and especially not AS ten times in a common message.

Thanks

Karl