On Dec 30, 2010, at 6:09 PM, michael.vancann...@wisa.be wrote: > > > On Thu, 30 Dec 2010, Jonas Maebe wrote: > >> >> On 30 Dec 2010, at 17:34, Darius Blaszyk wrote: >> >>> As these functions are needed per window, I would like to encapsulate each >>> window in a class something like: >>> >>> TMyGLutWindow = class >>> private >>> procedure MyDisplayFunc; cdecl; >>> public >>> constructor Create; >>> end; >>> >>> In the constructor I would like to set the displayfunction. But doing this >>> I get the error: >>> >>> Error: Incompatible types: got "<procedure variable type of procedure of >>> object;CDecl>" expected "<procedure variable type of procedure;CDecl>" >>> >>> Though I understand the error, I do not know if there is a way to >>> circumvent this? >> >> Maybe with a static class method? (they may require svn trunk to work >> though) You won't be able to access any fields from that one, of course. > > That kind of defeats the purpose, if you want to create a wrapper around the > window instance, which I understood to be the intention of Darius ?
The intention is indeed to create a wrapper around the multiple callback functions that GLut provides and additionally add some other methods and properties. I have tried using a class method (FPC 2.4.2) but not static class methods, although I don't really understand what you mean with "you won't be able to access any fields from that one". Afaik class methods have a self, right? That would suggest you can access any method or property of self from a class method? Regards, Darius_______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
