The compiler has encountered a "write only" property that claims to implement an interface. A property must be read/write to use the implements clause.
program Produce; type IMyInterface = interface end; TMyClass = class(TInterfacedObject, IMyInterface) FMyInterface: IMyInterface; property MyInterface: IMyInterface implements IMyInterface; end; end.
The property in this example is write only and cannot be used to implement an interface.
program Solve; type IMyInterface = interface end; TMyClass = class(TInterfacedObject, IMyInterface) FMyInterface: IMyInterface; property MyInterface: IMyInterface read FMyInterface implements IMyInterface; end; end.
By adding a read clause, the property can use the implements clause.
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