Fondo de pantalla

[hackgenius]

Cuando pongo el codigo esee de la ayuda del delphy 7 me sale este pedazo error:

[Warning] Unit1.pas(76): Symbol 'FileGetAttr' is specific to a platform
[Warning] Unit1.pas(77): Symbol 'faHidden' is specific to a platform
[Warning] Unit1.pas(78): Symbol 'FileSetAttr' is specific to a platform
[Error] Unit1.pas(78): Illegal character in input file: '–' ($96)
[Error] Unit1.pas(78): Statement expected, but expression of type 'Integer' found
[Fatal Error] Project1.dpr(5): Could not compile used unit 'Unit1.pas'

Esto no usara algun uses?