delphi – 如何声明数组属性?
发布时间:2020-12-15 04:26:13 所属栏目:大数据 来源:网络整理
导读:我构建了类系统 TTableSpec=class(Tobject) private FName : string; FDescription : string; FCan_add : Boolean; FCan_edit : Boolean; FCan_delete : Boolean; FFields : array[1..100] of TFieldSpec; public property Name: String read FName; propert
我构建了类系统
TTableSpec=class(Tobject) private FName : string; FDescription : string; FCan_add : Boolean; FCan_edit : Boolean; FCan_delete : Boolean; FFields : array[1..100] of TFieldSpec; public property Name: String read FName; property Description: String read FDescription; property Can_add : Boolean read FCan_add; property Can_edit : Boolean read FCan_edit; property Can_delete : Boolean read FCan_delete; property Fields : array read FFields; end; 因此在TableSpec Fields属性将是字段列表(我使用TFieldSpec数组).如何组织字段列表(使用或不使用数组)作为编译的结果我收到一个错误 [Error] Objects.pas(97): Identifier expected but 'ARRAY' found [Error] Objects.pas(97): READ or WRITE clause expected,but identifier 'FFields' found [Error] Objects.pas(98): Type expected but 'END' found [Hint] Objects.pas(90): Private symbol 'FFields' declared but never used [Fatal Error] FirstTask.dpr(5): Could not compile used unit 'Objects.pas' 解决方法
你的行
property Fields : array read FFields; 是无效的语法.它应该是 property Fields[Index: Integer]: TFieldSpec read GetField; 其中GetField是一个(私有)函数,它使用一个整数(Index)并返回相应的TFieldSpec,例如, function TTableSpec.GetField(Index: Integer): TFieldSpec; begin result := FFields[Index]; end; 见the documentation on array properties. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |