On Sunday 20 May 2007 16:43:34 Jonas Maebe wrote: > On 20 May 2007, at 16:38, bartek wrote: > > OK. And what about this: > > -----8<----- > > /home/bartek/Dev/units/glgui/glgui.pp(376,33) Error: Can't take the > > address of > > constant expressions > > -----8<----- > > constructor TGLGUI3DMouseMapper.Create(aOwnerDesktop: TGLGUIDesktop); > > begin > > OwnerDesktop:=aOwnerDesktop; > > OwnerDesktop.MouseMapper:=self; // 376 is here > > end; > > -----8<----- > > > > Definition snippet: > > -----8<----- > > // properties > > property OwnerDesktop: TGLGUIDesktop read > > fOwnerDesktop write > > fOwnerDesktop; > > -----8<----- > > You cannot write to fields of properties. The reason is that any > property accessor should be transparently replaceable by a function > call, and if you do that in the above expression then your assignment > would change something inside the (temporary) function result rather > than in the field. > Thank you very much, now everything works like a charm.
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