unit uInterface;

interface
uses
    Windows, Messages, SysUtils, Graphics, Forms, Dialogs, Controls, classes;

type
    //屬性描述
    TPhotoProp = record
        Name:string;
        Desc:string;
        Data:TDateTime;
        Size:Integer;
    end;
    
    //通知接口
    //由photoMgr發(fā)送有關(guān)照片變更的消息通知界面組件。
    //通知的內(nèi)容
    //增加，刪除，刷新，屬性變化
    IPhotoNotify = interface
        function SelPhoto(const photoID:Integer):Boolean;
        function NewPhoto(const photoID:Integer):Boolean;
        function DelPhoto(const photoID:Integer):Boolean;
        function Refresh():Boolean;
        function PropChange(const photoID:Integer):Boolean;
    end;

{------------------------------------------------------------------------------}
    //實(shí)現(xiàn)PhotoMgr接口
    //由PhotoMgr類來實(shí)現(xiàn)
    IPhotoMgr = interface
        function GetPhotoCount(var Count:Integer):Boolean;
        function GetPhotoID(const idx:Integer; var PhotoID:Integer):Boolean;
        function GetSelPhotoID(var PhotoID:Integer):Boolean;
        function GetPhotoPorp(const photoID:Integer;var PhotoProp:TPhotoProp):Boolean;
        function GetBmp(const PhotoID:Integer;var bmp:TBitmap):Boolean;
    end;

implementation

end.