小编yog*_*ogi的帖子

我想重载一个类中的过程.为此,我写道:

type 

  TMyClass = class(TObject)
  private...
  ...
  public 
   constructor create;
   destructor destroy;
   procedure dosomething(filename: string); overload;
   procedure dosomething(s: string; t: string; u: string); overload;


implementation

  procedure dosomething(filename:string);
  begin
  end;

  procedure dosomething(s: string; t: string; u: string);
  begin
  end;

但德尔福告诉我有关前向或外部声明错误的错误......

这是为什么？

提前致谢!